Curated Video
Why Does Scratching Your Back Feel So Satisfying?
We have all spent days staring at the computer screen with stiff backs, holding awkward positions without realizing it. Unconsciously, we move our fingers across our backs in motions similar to those of scratching. In no time at all,...
The Noted Anatomist
Acetylcholine. ACh
This video tutorial discusses the Acetylcholine also known as ACh. 0:00. Intro to ACh 0:21. What is ACh? 0:41. What neurons release ACh? 1:47. Synthesis of ACh - 3:05. Hemicholinium 3:31. Storage of ACh - 5:07. Vesamicol 5:35. Release of...
Mazz Media
Blood Pressure (Measurement and Control)
In this live-action program viewers will learn that blood pressure is the force of blood pushing against the walls of arteries and as the heart beats, it creates the pressure exerted by blood, moving blood throughout the circulatory...
Next Animation Studio
Explainer: Why COVID-19 is more lethal for patients with heart disease or diabetes
Biologists at the Chinese Academy of Military Medical Sciences have found why COVID-19 patients with heart disease or diabetes are more likely to suffer serious complications
Catalyst University
Excitation-Contraction Coupling in Skeletal Muscle [Part 1/2]
Part 1 of 2 of excitation-contraction coupling | In this video, we discuss excitation-contraction coupling from events on the motor neuron axon all the way through opening of calcium channels in the sarcoplasmic reticulum (SR).
Mazz Media
Negative Feedback Loop
In this live-action program viewers will learn that a negative feedback loop is a self-regulating system. Input to the system causes a variable to increase. The resulting output then reduces the input. Students will come to understand...
Catalyst University
Mechanisms of β1-blockers, Calcium-channel Blockers, & α-blockers
In this video, we will be exploring the mechanisms of action of several antihypertensive drugs that act in the cardiovascular system and on the heart: β-blockers, calcium-channel blocker's, and α-blockers.
Catalyst University
Events of Excitation-Contraction Coupling [Part 1]
In this video, we will discuss the events of Excitation-Contraction Coupling from the motor neuron action potential to release of Ca2+ from the sarcoplasmic reticulum (SR). **Part 2 Coming Soon
Visual Learning Systems
Senses: Receptors in the Skin
Whether it is the sight of colorful flowers, or the smell of freshly baked cookies, our senses are constantly at work. Breathtaking video footage and three-dimensional animations illustrate how complex sensory organs function. Special...
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...
Catalyst University
Psilocybin | Biosynthesis, Mechanism of Action, & Metabolism
In this video, we explore the biosynthesis of the psychedelic drug, psilocybin, and its mechanism of action, metabolism, and elimination.
Curated Video
Understanding Reflex Arcs in the Nervous System
The video is a lesson on reflex arcs and the function of reflex actions in the nervous system. Using a hot pan as an example, the video describes how pain receptors in the skin detect a stimulus, which triggers a series of neuronal...
Catalyst University
The GABAa Receptor & Positive Allosteric Modulation
The GABAa Receptor & Positive Allosteric Modulation
Science360
New Mosquito Repellant Could Be Frightening... For The Mosquitoes!
Vanderbilt University researchers say they're working to unleash an insect repellent on mosquitoes that's more powerful than DEET. The discovery could one day be effective in reducing the spread of mosquito-borne diseases, such as...
Professor Dave Explains
Virus-Cell Interactions Part 1 Productive vs. Non-Productive
Now that we know a bit about viruses, we understand that they require a host cell. So let's get some more details about how viruses interact with cells. There are a few different ways this can play out, so let's start by looking at...
The Noted Anatomist
Autonomic innervation of vessels
This video tutorial briefly covers the sympathetic and parasympathetic role on vessel innervation. It focuses on the following: - Sympathetic neurotransmitters (epinephrine and nor-epinephrine) and receptors (adrenergic). -...
The Noted Anatomist
Nicotinic cholinergic receptors
This video tutorial discusses the Nicotinic cholinergic receptors: 0:00. Intro 0:17. What are cholinergic receptors? 0:31. What are nicotinic receptors? 1:47. What are the 2 types of nicotinic receptors? 2:07. Nm. Nicotinic muscle...
Professor Dave Explains
Bronchodilators Part 1: Principles of Respiratory Airflow and Development of Selective Drugs
Bronchodilators are drugs used to expand a constricted airway in instances of asthma, bronchitis, and emphysema. Poiseuille's law, an equation often used to study fluid dynamics plays and important role in calculating the effectiveness...
Catalyst University
Mechanism of Long-Term Potentiation of Synapses
In this video, we explore the purpose and biochemical mechanism of long-term potentiation in neurons in relevant neural circuits.
Catalyst University
LDL-mediated Cholesterol Delivery to Cells
In this video, we explore the mechanism of LDL-mediated cholesterol delivery to peripheral cells.
Catalyst University
Pulmonary Pharmacology [Part 1] | Bronchoconstriction & Bronchodilation Mechanisms
In this video, explore the biochemical mechanisms that promote bronchoconstriction and bronchodilation.
Next Animation Studio
Explainer: How the coronavirus (SARS-CoV-2) infects human cells
Researchers from China have used cryo-electron microscopy to show how the virus responsible for COVID-19 attacks humans.
Next Animation Studio
Study reveals how COVID-19 infects human cells
Researchers from China have used cryo-electron microscopy to show how SARS-CoV-2 infects humans.