Bozeman Science
Evolutionary Significance of Cell Communication
Paul Andersen describes how cell communication is used in both single-celled and multicellular organisms. He starts by describing the symbiotic relationship between the bobtail squid and the bacteria Vibrio fisheri. He explains how...
TED-Ed
TED-Ed: How stress affects your body - Sharon Horesh Bergquist
Our hard-wired stress response is designed to give us the quick burst of heightened alertness and energy needed to perform our best. But stress isn't all good. When activated too long or too often, stress can damage virtually every part...
TED Talks
TED: A crash course in organic chemistry | Jakob Magolan
Jakob Magolan is here to change your perception of organic chemistry. In an accessible talk packed with striking graphics, he teaches us the basics while breaking the stereotype that organic chemistry is something to be afraid of.
SciShow
Anxiety Hurts
Everybody knows what anxiety feels like - it's annoying and counterproductive and apparently useless, so why does it exist? It turns out your anxiety isn't useless at all - it's a result of the sympathetic nervous system (in charge of...
Be Smart
How Many Heartbeats Do We Get?
Ever wonder how the heart symbol came to stand for the actual heart? And why do we speak of the heart as the seat of love, when love really happens in our brains? Is it true that animals only get a billion heartbeats? This week, we give...
Bozeman Science
Signal Transmission and Gene Expression
Paul Andersen explains how signal transmission is used to alter both cellular function and gene expression. He uses the example of epinephrine release in humans and how it is used in the fight or flight response. Epinephrine causes liver...
Bozeman Science
Signal Transduction Pathways
Paul Andersen explains how signal transduction pathways are used by cells to convert chemical messages to cellular action. Epinephrine is used as a sample messenger to trigger the release of glucose from cells in the liver. The...
Crash Course
Great Glands - Your Endocrine System: CrashCourse Biology
Hank fills us in on the endocrine system - the system of glands which produce and secrete different types of hormones directly into the bloodstream to regulate the body's growth, metabolism, and sexual development & function.
Bozeman Science
Fight or Flight Response
Paul Andersen explains how epinephrine is responsible for changes in chemistry of our body associated with the fight or flight response. Epinephrine released by the adrenal medulla are received by a number of organs associated with the...
TED-Ed
TED-Ed: How blood pressure works - Wilfred Manzano
If you lined up all the blood vessels in your body, they'd be 60 thousand miles long. And every day, they carry the equivalent of over two thousand gallons of blood to the body's tissues. What effect does this pressure have on the walls...
Curated Video
Adrenaline
Also called epinephrine, a hormone produced by the adrenal glands, which are found just above the kidneys. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
The Noted Anatomist
Testing ANS #shorts (Part F)
Short video testing autonomic nervous system (ANS) #shorts (Part F) sympathetic, parasympathetic, T1-L2, brainstem, S2-S4, lateral horn, white ramus communicans, gray ramus communicans, sympathetic ganglion, sympathetic chain, NE, EPI,...
The Noted Anatomist
Testing ANS #shorts (Part E
Short video testing autonomic nervous system (ANS) #shorts (Part E) sympathetic, parasympathetic, T1-L2, brainstem, S2-S4, lateral horn, white ramus communicans, gray ramus communicans, sympathetic ganglion, sympathetic chain, NE, EPI,...
Catalyst University
Biosignaling - G-protein-coupled Receptors cAMP & Adenylate Cyclase
Biosignaling - G-protein-coupled Receptors cAMP & Adenylate Cyclase
Catalyst University
Biosignaling - Receptor Desensitization by Beta-arrestin
Biosignaling - Receptor Desensitization by Beta-arrestin
Catalyst University
Schiff Base Chemistry 2 Monoamine Oxidase
Schiff Base Chemistry 2 Monoamine Oxidase
JJ Medicine
Catecholamine Biosynthesis Pathway
Catecholamine Synthesis Lesson: Pathway, Enzymes, Co-Factors and Genetic Diseases. Hey everyone! In this lesson you will learn about the pathway involving the synthesis of the catecholamines dopamine, norepinephrine and epinephrine, as...
Healthcare Triage
The EpiPen and What's Wrong with American Healthcare
Three times in the last two weeks, people - a patient, a colleague and my wife - told me stories about how out of control the price of EpiPens were. Monday, my New York Times colleagues recounted in detail how expensive the devices have...
Catalyst University
Pulmonary Pharmacology [Part 1] | Sympathomimetics, Anti-muscarinics, & Methylxanthines
In this video, we explore the major classes of drugs that are used in the treatment of pulmonary disorders (asthma and COPD) along with their mechanisms of action. Specifically, we consider the classes of drugs that do not directly...
JJ Medicine
High Early Morning Glucose | Dawn Phenomenon & Somogyi Effect
High Early Morning Glucose | Dawn Phenomenon & Somogyi Effect High early morning glucose levels can become a problem in management of blood sugars for diabetic patients. Glucose levels normally fluctuate throughout the day; however, two...
Catalyst University
Pulmonary Pharmacology [Part 1] | Bronchoconstriction & Bronchodilation Mechanisms
In this video, explore the biochemical mechanisms that promote bronchoconstriction and bronchodilation.