We are almost done looking at the cells of the innate immune system, but two of the most important are basophils and eosinophils. What do these cells do? What types of receptors do they express? Let's get a closer look!

How does your body regulate your internal conditions? How does it detect changes and respond to them? What is an automatic control system and how does it use negative feedback? <br/>
Find out all this and more in less than 5 minutes!

Psychedelics like magic mushrooms have huge effects on the brain. But what are they doing up there? More than 180 species of "magic mushrooms" produce the psychoactive compound psilocybin. And ingesting it triggers some pretty trippy...

A highly venomous coral reef snake encounters a fisher. I explain his case with the symptoms, neurotoxicity, and treatments including the administration of antivenom.
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1) Sea Sn
ake Bite
2)
Local Symptoms
3)...

We've talked a bit about how immune cell receptors operate, but now it's time to get specific about the types of receptors that immune cells can express. That means we need to discuss antigen receptors, costimulatory receptors,...

The video explains the importance of maintaining a stable body temperature for enzyme reactions and how the hypothalamus in the brain is responsible for thermoregulation. It covers the different factors that affect body temperature,...

This video tutorial discusses the Muscarinic cholinergic receptors: 0:00. Intro 0:15. What are cholinergic receptors? 0:25. What are muscarinic receptors? 1:52. Act through G-Protein coupled receptors that act through 2nd messengers...

Biosignaling - TGF-β Signaling Pathway

In this video, we discuss the psychedelic drug, dimethyltryptamine [DMT] and its biosynthesis, mechanism of action, metabolism, & elimination.

IP3 and DAG

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,...

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...

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...

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

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).

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...

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.

Learn more about colour vision in dogs.

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

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...

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...

In this video, we explore the biosynthesis of the psychedelic drug, psilocybin, and its mechanism of action, metabolism, and elimination.

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...

The GABAa Receptor & Positive Allosteric Modulation