Afleveringen
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THE BRAIN IS HUNGRY FOR PEOPLE. Keeping in mind new experiences of isolation during the pandemic, recent research shows parallels between a socially-deprived brain craving people and a fasted brain craving food.
Full notes at headshake.show/episodes/34
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Here’s more involuntary neuroscience: spinal reflexes. They’re so involuntary, your brain doesn’t even know they happened.
Full notes at headshake.show/episodes/33
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Zijn er afleveringen die ontbreken?
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The letter A is always red to some people. To others, the sound of a car horn might always smell like pie. Libby and Ruka sensually explore the rare but real condition of synesthesia.
Full notes at headshake.show/episodes/32
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Does it feel like you’ve heard this before? An episode on déjà vu. An episode on déjà vu.
Full notes at headshake.show/episodes/31
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Returning to the land of electrophysiology, Lord Nathan and Lady Kristen focus this time on action potentials, which neurons use to send electrical signals long distances in the body. God save the Baked Bean!
Full notes at headshake.show/episodes/30
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In 1848, Phineas Gage survived an unfortunate railroad accident that later informed science and medicine’s understanding of how the prefrontal cortex works. Supporting character: Spikey the tamping iron
Full notes at headshake.show/episodes/29 -
It’s Headshake’s anniversary, and the finale of the Gap Junction Almanac. We hope you’ve had the “Time of Your Life,” and we’ll still be “Friends Forever.” Let’s cheer ourselves up with a discussion of seasonal affective disorder (SAD).
Key Words
bipolar ii, circadian rhythm, cognitive behavioral therapy (CBT), depression, heritable, light box, light therapy, lux, major depression, melatonin, norepinephrine-dopamine reuptake inhibitor (NDRI), psychotherapy, seasonal affective disorder (SAD), selective serotonin reuptake inhibitor (SSRI), serotonin, summer pattern, vitamin D, winter pattern
Old West Word of the Day (Gap Junction Almanac)
Anglomaniacs
Lots of old west insults - Listen to the episode for a season finale’s worth of insults
References and Resources
NIMH » Seasonal Affective Disorder (nih.gov), National Institute of Mental Health Seasonal affective disorder (SAD) - Symptoms and causes, Mayo Clinic Are You Affected By Seasonal Affective Disorder (SAD)?, Psychology Today ClimaTemps http://www.madison.climatemps.com/sunlight.php https://www.oahu.climatemps.com/sunlight.php Diagnostic and Statistical Manual of Mental Disorders (DSM-5)Season 1 Spotify Playlist!
HEADSHAKE: The Playlist
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Early Bird Science - Ruka’s other science podcast
earlybirdscience.com
Music
Bushwick Tarantella by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300002
Artist: http://incompetech.com/
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Disclaimer
This podcast is for entertainment and education only. Neither of the hosts is a medical doctor, and nothing they say is medical advice. Please consult with your medical provider before making decisions about your health.
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“Nerves?” This is a neuroscience podcast. Haven’t we been talking about nerves the whole time??? Nope! Learn why.
Key Words
afferent, anopsia, anosmia, autonomic, axon, cardiac muscle, cardiovascular, caudal, central nervous system (CNS), cervical nerves, coccygeal nerves, cranial nerve, efferent, gastrointestinal (GI), innervate, larynx, lateral, lumbar nerves, mastication, medial, motor, nerve, nucleus ambiguus, peripheral nervous system (PNS), pharynx, ptosis, pulmonary, rostral, sacral nerves, sensory, skeletal muscle, smooth muscle, somatic, spinal nerve, sternocleidomastoid, thoracic nerves, trapezius, trigeminal neuralgia
CN I - Olfactory CN II - Optic CN III - Oculomotor CN IV - Trochlear CN V - Trigeminal (Divisions: Ophthalmic, Maxillary, Mandibular) CN VI - Abducens CN VII - Facial CN VIII - Vestibulocochlear CN IX - Glossopharyngeal CN X - Vagus CN XI - Spinal Accessory CN XII - Hypoglossal
Old West Word of the Day (Gap Junction Almanac)
Zitted
Zooning
References
Textbooks
Vander’s Human Physiology, 13th Edition Principles of Neural Science, Kandel, Schwartz, and Jessell, 4th Edition Fundamental Neuroscience for Basic and Clinical Applications, Haines, 3rd Edition
Season 1 Spotify Playlist!
HEADSHAKE: The Playlist
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Early Bird Science - Ruka’s other science podcast
earlybirdscience.com
Music
Bushwick Tarantella by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300002
Artist: http://incompetech.com/
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Disclaimer
This podcast is for entertainment and education only. Neither of the hosts is a medical doctor, and nothing they say is medical advice. Please consult with your medical provider before making decisions about your health.
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There are two kilograms (4.4 pounds) of microbes in your gut. Are these little residents controlling your brain? If so, how? Poop Detectives Libby and Ruka are on the case.
Key Words
autism, bacteria, depression, enteroendocrine, fecal transplant, gamma aminobutyric acid (GABA), gastrointestinal (GI) system, gut flora, gut microbiome, immune cells, inflammation, irritable bowel syndrome (IBS), kynurenine, neuropod cells, Parkinson’s disease, psychobiome, psychobiotics, schizophrenia, serotonin, tryptophan, Valsalva maneuver
Old West Words of the Day (Gap Junction Almanac)
Yack
Yam
References and Resources
Meet the ‘psychobiome’: the gut bacteria that may alter how you think, feel, and act, Science Magazine, May 7, 2020
Season 1 Spotify Playlist!
HEADSHAKE: The Playlist
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Music
Bushwick Tarantella by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300002
Artist: http://incompetech.com/
Modified from original with volume fading and cuts
Disclaimer
This podcast is for entertainment and education only. Neither of the hosts is a medical doctor, and nothing they say is medical advice. Please consult with your medical provider before making decisions about your health.
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Hair cells in your inner ear and piano keys in your brain. This is our second episode on the sense of hearing. Libby and Ruka wrap up the year with thicker-than-usual Wisconsin accents. Happy birthday to Libby, and Happy New Year!
Key Words
amplitude, auditory cortex, basilar membrane, brain stem, calcium, cochlea, cochlear duct, cocktail party effect, cranial nerve viii (vestibulocochlear), decibels, depolarization, frequency, gating, glutamate, hair cells, helicotrema, inner hair cells, mechanically-gated, neurotransmitter, organ of Corti, outer hair cells, oval window, pitch, potassium, receptor, round window, scala tympani, scala vestibuli, stapedius, stapes, stereocilia, synapse, tectorial membrane, tensor tympani, thalamus, threshold of pain, tinnitus, tip link, vesicles, voltage-gated
Old West Word of the Day (Gap Junction Almanac)
weather breeder
wabble
Related Episodes
Lime in the Cochlea [Audition, Part 1]
Reference
Textbook: Vander’s Human Physiology, 13th Edition
Season 1 Spotify Playlist!
HEADSHAKE: The Playlist
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Music
Bushwick Tarantella by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300002
Artist: http://incompetech.com/
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Disclaimer
This podcast is for entertainment and education only. Neither of the hosts is a medical doctor, and nothing they say is medical advice. Please consult with your medical provider before making decisions about your health.
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This is part one of two episodes about the auditory system. You could say it’s a “preliminary hearing.”
Key Words
amplitude, audition, auditory system, aurical, cochlea, cochlear duct, deaf, decibel, eardrum, endolymph, eustachian tube, external auditory canal, frequency, hearing impaired, hearing, helicotrema, incus, inner ear, malleus, middle ear, organ of Corti, outer ear, oval window, perilymph, pinna, pitch, round window, scala tympani, scala vestibuli, stapes, tympanic membrane, volume, zone of compression, zone of rarefaction
Old West Words of the Day (Gap Junction Almanac)
Wearing the bustle wrong
Wipe your chin
BRAND NEW Season 1 Spotify Playlist!
HEADSHAKE: The Playlist
Reference
Textbook: Vander’s Human Physiology, 13th Edition
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Music
Bushwick Tarantella by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300002
Artist: http://incompetech.com/
Modified from original with volume fading and cuts
Disclaimer
This podcast is for entertainment and education only. Neither of the hosts is a medical doctor, and nothing they say is medical advice. Please consult with your medical provider before making decisions about your health.
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Bad news/good news: Grand mal got run over by a reindeer, BUT we got new microphones! In addition to learning what science does and doesn’t know about brain lightning storms (seizures), hear Libby’s seasonal reflections on the Little Drummer Boy.
Key Words
absence, amygdala, anticonvulsant, apoptosis, atonic, aura, benzodiazepine, carbamazepine (Tegretol), cellular signaling cascade, clonic, complex, cortex, cyanotic, diazepam (Valium), electroencephalogram (EEG), epilepsy, excitotoxicity, GABA, GABAA receptor, generalized, glucose, glutamate, grand mal, hippocampus, inhibitory surround, kindling, limbic, lorazepam (Ativan), magnetic resonance imaging (MRI), metabolism, motor, myoclonic, necrosis, negative symptom, occipital, oxygen, partial (focal), petit mal, phenytoin (Dilantin), piloerection, plasticity, positive symptom, positron emission tomography (PET), postictal, primary, secondary, seizure, sensory, simple, single photon emission computed tomography (SPECT), status epilepticus, symptomatic epilepsy, tonic, tonic-clonic, visual
54 key terms!
Old West Words of the Day (Gap Junction Almanac)
vum
vaultinghouse
References and Resources
Textbooks
Principles of Neural Science, Kandel, Schwartz, and Jessell, 4th Edition Vander’s Human Physiology, 13th EditionConnect with us!
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Music
Bushwick Tarantella by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300002
Artist: http://incompetech.com/
Modified from original with volume fading and cuts
Disclaimer
This podcast is for entertainment and education only. Neither of the hosts is a medical doctor, and nothing they say is medical advice. Please consult with your medical provider before making decisions about your health.
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Who are you?! Oh, right. Hi, Jeff! Sorry about that. Our forgetting neurons were working particularly hard last night. Yes, you have neurons that make you forget. Turns out they’re important in memory.
This Episode’s Spotify Playlist
Neuralized
Key Words
action potential, amygdala, anxiety, appetite, CA1, calcium transients, chemogenetics, consolidation, contextual fear conditioning (CFC), cued fear, dreams, electroencephalogram (EEG), electromyography (EMG), electrophysiology, fiber photometry, forget, GABA, GABA-ergic, glutamate, hippocampus, hypothalamus, immunohistochemistry, inhibitory post-synaptic current (IPSC), limbic, melanin-concentrating hormone (MCH) neurons, memory, microendoscopy, novel object recognition (NOR), optogenetics, retention, retrobeads
Old West Word of the Day (Gap Junction Almanac)
Unsalted
References and Resources
Primary research paper: REM sleep–active MCH neurons are involved in forgetting hippocampus-dependent memories, Science, 20 Sept 2019 “Kid’s Menu:” Scientists Find The Neurons That Make Your Brain ForgetConnect with us!
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Music
Bushwick Tarantella by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300002
Artist: http://incompetech.com/
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Disclaimer
This podcast is for entertainment and education only. Neither of the hosts is a medical doctor, and nothing they say is medical advice. Please consult with your physician before making decisions about your health.
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IN CASE OF EMERGENCY BREAK GLASS. Libby and Ruka are busy or dead. Either way, you get to listen to this episode recorded as a backup for times like these. Hear their joy, and remember them as they were before the pandemic.
Key Words
boredom susceptibility, cortisol, disinhibition, dopamine, experience seeking, mindfulness, norepinephrine, sensation seeking, thrill and adventure seeking, zorbing
The big five:
Openness to experience Conscientiousness Agreeableness Extroversion Neuroticism
Old West Words of the Day (Gap Junction Almanac)
Balls, Beef, Biff
Reference
Lust for Life, Psychology Today, October 2019
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Music
Bushwick Tarantella by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300002
Artist: http://incompetech.com/
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Disclaimer
This podcast is for entertainment and education only. Neither of the hosts is a medical doctor, and nothing they say is medical advice. Please consult with your physician before making decisions about your health.
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Headshake’s personal chef (a.k.a. Ruka’s spouse) is also an electrical and electronic engineer. Steven A. Gago helps Libby and Ruka tackle the mysteries of newly-developed microcircuit chips that could one day become implants to replace diseased neurons.
Key Words
Alzheimer's, analog, assimilate, bioimplant, Bötzinger region, brain stem, bursts, CA1, chip, circuit, current, digital, hardware, hippocampus, Hodgkin-Huxley model, medulla, model, pyramidal cells, respiratory neuron, solid state neuron, soma, transistor, very-large-scale integration (VLSI)
Old West Words of the Day (Gap Junction Almanac)
There you ain’t
Teapot
Tin
Toad strangler
References and Resources
Artificial neurons developed to fight disease, BBC, December 2019
Optimal solid state neurons, Abu-Hassan et al, Nature Communications, December 2019
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Music
Bushwick Tarantella by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300002
Artist: http://incompetech.com/
Modified from original with volume fading and cuts
Disclaimer
This podcast is for entertainment and education only. Neither of the hosts is a medical doctor, and nothing they say is medical advice. Please consult with your physician before making decisions about your health.
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In this elephant-themed episode, Headshake’s male and female hosts talk about whether or not there are differences in the brain between the sexes. If there are, how do they get there, and do they even matter?
Key Words
ADHD, autism spectrum disorder, behavior, conduct disorder, corpus callosum, development, eating disorders, environmental, frontal lobe, gender, generalized anxiety disorder, genes, hormones, hypothalamus, innate, intersex, major depression disorder, parietal lobe, phrenology, plasticity, sex, social
Old West Words of the Day (Gap Junction Almanac)
shote
skittles
slamgander
slantindicular
see the elephant
saltwater vegetables
References and Resources
Brain scientists haven’t been able to find major differences between women’s and men’s brains, despite over a century of searching, The Conversation, August 6, 2020 Neuroscience and Sex/Gender: Looking Back and Forward, The Journal of Neuroscience, January 2, 2020Connect with us!
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Music
Bushwick Tarantella by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300002
Artist: http://incompetech.com/
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Disclaimer
This podcast is for entertainment and education only. Neither of the hosts is a medical doctor, and nothing they say is medical advice. Please consult with your physician before making decisions about your health.
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Does listening to Headshake activate your fight or flight response? Or maybe it leaves you comfortably in your rest and digest state. Ruka and Libby talk about the differences between these systems while planning Libby’s self-eulogized Viking funeral.
Key Words
acetylcholine, adrenal medulla, adrenaline, afferent, autonomic motor, autonomic nervous system, blood pressure, central nervous system (CNS), cervical, collateral ganglia, efferent, enteric, epinephrine, fight or flight response, ganglion, gastrointestinal (GI) tract, glucose, heart rate, heart, homeostasis, innervate, liver, lumbar, norepinephrine, parasympathetic, peripheral nervous system (PNS), postganglionic, preganglionic, pupils, rest and digest state, sacral, somatic motor, somatic nervous system, somatic sensory, special sensory, spinal cord, stress, sympathetic trunk, sympathetic, thoracic, visceral sensory
Old West Words of the Day (Gap Junction Almanac)
Rumbumptious
Rum hole
References and Resources
Textbook: Vander’s Human Physiology, 13th Edition
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Music
Bushwick Tarantella by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300002
Artist: http://incompetech.com/
Modified from original with volume fading and cuts
Disclaimer
This podcast is for entertainment and education only. Neither of the hosts is a medical doctor, and nothing they say is medical advice. Please consult with your physician before making decisions about your health.
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Want to lose 1.5 pounds fast? Get a hemispherectomy! Libby and Ruka discuss research on highly-functioning adults who, for medical reasons, had half their brains removed as kids.
Key Words
anatomical hemispherectomy, behavior, brain stem, cerebellum, cerebrum, chronic focal encephalitis, cognition, connectome, control/executive, cortical dysplasia, default, dorsal attention, emotion, functional hemispherectomy, intelligence, functional network, hemispherectomy, limbic, parcel, perinatal stroke, plasticity, Rasmussen encephalitis, salience/ventral attention, somatosensory/motor, visual
Old West Word of the Day (Gap Junction Almanac)
Quincy
Bonuses: puddin’ foot, prairie chips, pop your corn
References and Resources
Research Paper: Intrinsic Functional Connectivity of the Brain in Adults with a Single Cerebral Hemisphere Related articles How The Human Brain Rewires Itself After Half A Hemisphere Is Surgically Removed What Is Brain Plasticity And Why Is It So Important?
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Music
Bushwick Tarantella by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300002
Artist: http://incompetech.com/
Modified from original with volume fading and cuts
Disclaimer
This podcast is for entertainment and education only. Neither of the hosts is a medical doctor, and nothing they say is medical advice. Please consult with your physician before making decisions about your health.
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Libby and Ruka learn about the strange but harmless experience of being awake and not being able to move. This episode is brought to you by the letter P and delicious chocolate frosted Kooky Monkey Brains: “They’re mentally delicious.”
Key Words
atonia, brain stem, general anxiety disorder, glycine, hallucinate, interneurons, jet lag, medulla, midbrain, narcolepsy, non-rem, panic disorder, pons, post traumatic stress disorder (PTSD), rapid eye movement (REM), REM-off, REM-on, shift work, sleep offset paralysis, sleep onset paralysis, sleep paralysis, sleep phase, spinal cord
Old West Word of the Day (Gap Junction Almanac)
Piece of pudding
Pecker pole
References and Resources
Sleep Paralysis and the Monsters Inside Your Mind, Scientific American Principles of Neural Science, Kandel, Schwartz, and Jessell, 4th Edition Sleep Paralysis, NHSConnect with us!
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Music
Bushwick Tarantella by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300002
Artist: http://incompetech.com/
Modified from original with volume fading and cuts
Disclaimer
This podcast is for entertainment and education only. Neither of the hosts is a medical doctor, and nothing they say is medical advice. Please consult with your physician before making decisions about your health.
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In an attempt to recover from the last episode’s derailment by boy bands, Ruka speeds through an overview of the hypothalamus and the anterior pituitary. In the process, she discovers Libby’s deep past with the movie Cool Runnings.
Key Words - New record: 46!
adrenal cortex, adrenaline, adrenocorticotropic hormone (ACTH), anterior pituitary, biogenic amine, catecholamine, corticotropin, corticotropin-releasing hormone (CRH), dopamine, endocrine feedback loop, epinephrine, estradiol, follicle-stimulating hormone (FSH), germ cell, gonadotropin-releasing hormone (GnRH), gonadotropins, gonads, growth hormone (GH), growth hormone release inhibiting hormone (GHRIH), growth hormone-releasing hormone (GHRH), homeostasis, hypothalamo-pituitary-adrenal (HPA) axis, hypothalamo-pituitary-gonadal (HPG) axis, infundibulum, insulin-like growth factor 1 (IGF-1), luteinizing hormone (LH), median eminence, melanocyte, melanocyte-stimulating hormone (MSH), melanocyte-stimulating hormone release-inhibiting factor (MIF), melanocyte-stimulating hormone-releasing factor (MRF), ovaries, ovum, parvocellular neurons, peptide hormone, portal vasculature, progesterone, prolactin, somatostatin, sperm, testes, testosterone, thyroid-stimulating hormone (TSH), thyrotropin-releasing hormone (TRH), thyroxine, triiodothyronine
Old West Word of the Day (Gap Junction Almanac)
Oof
Related Episode
Episode 14: Turkey Saddle [Hypothalamus and Posterior Pituitary]
References and Resources
Textbooks
Vander’s Human Physiology, 13th Edition Principles of Neural Science, Kandel, Schwartz, and Jessell, 4th Edition Fundamental Neuroscience for Basic and Clinical Applications, Haines, 3rd EditionConnect with us!
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Music
Bushwick Tarantella by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300002
Artist: http://incompetech.com/
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Disclaimer
This podcast is for entertainment and education only. Neither of the hosts is a medical doctor, and nothing they say is medical advice. Please consult with your physician before making decisions about your health.
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