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.

It’s true. You have tiny mites living all around your face. But who are they? And how did they get there? QQ has the A!

Today on Crash Course Anatomy & Physiology, Hank breaks down the parts and functions of one of your body's unsung heroes: your epithelial tissue.
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Epithelial Tissue Creates...

If you always end up soaked while your friends are barely glistening, you might have wondered why your sweat glands are so… sweaty.

Over our lifetimes, our bodies undergo a series of extraordinary metamorphoses: we grow, experience puberty, and many of us reproduce. Behind the scenes, the endocrine system works constantly to orchestrate these changes. Emma Bryce...

Do you just hate those little bumps all over your nose? Don't be a hater, they're just doing their job! Learn how in this SciShow Quick Question.

In this video Paul Andersen explains the structures and functions of seventeen major parts of the brain. He begins with a quick discussion of brain evolution and ends with a review of the major parts presented inside the brainstem,...

Hank begins teaching you about your endocrine system by explaining how it uses glands to produce hormones. These hormones are either amino-acid based and water soluble, or steroidal and lipid-soluble, and may target many types of...

In the second half of our look at the endocrine system, Hank discusses chemical homeostasis and hormone cascades. Specifically, he looks at the hypothalamus-pituitary-thyroid axis, or HPT axis, and all the ways your body can suffer...

Howcast - Find out if all snakes bite in this Howcast video about pet snakes.

Howcast - Learn seven cool facts about waxy monkey frogs from reptile and amphibian expert Jungle Bob in this Howcast video.

Some parts of your body are named after the anatomists who discovered them. Have you ever wondered who named a body part after them? And did you know that there are some body parts that were named after biblical and mythological figures?

The lymphatic system consists of a complex network of lymphatic vessels, glands or nodes, and organs, such as the spleen and thymus, extending throughout the body. Through it flows a fluid called lymph. The lymphatic system has three...

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The endocrine system is composed of glands that produce hormones to affect changes in distant target organs. It is crucial in maintaining homeostasisbalancein the body. There are seven major endocrine glands scattered throughout the...

The digestive system is the system that helps us break down the food we eat to its basic nutrients so that our body can use those nutrients to get energy. The digestive system is composed of the long continuous alimentary tract or...

The most likely explanation for feeling tired all day but wired at night is that your Circadian rhythm is disrupted. This can be caused by a number of factors, such as adrenal disorders, poor sleep habits, sleep disorders, or mental vs....

An organ that produces a specific substance the body needs, such as a hormone.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....

A small but important region of the brain that monitors and regulates many body systems that we do not control consciously.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using...

Not all plants exist simply on sunlight and water. Carnivorous plants eat meat. Discover how some of these carnivores trap and kill their prey. Biology - Plants - Learning Points. Some plants, often in harsh conditions, have adapted to...

Discover the world of spiders and their webs, spanning various habitats and featuring nearly 40,000 types worldwide. Learn about their unique silk-spinning abilities to create webs for trapping prey and other uses. Understand spiders'...

In this video, Jonathan from the Institute of Human Anatomy discusses the anatomy of the human tongue as well as discusses the many different functions that the tongue performs. He also talks about some of the myths associated with the...

In this video, Jonathan from the Institute of Human Anatomy discusses the components of semen, why it is necessary for sperm cells and reproduction, and the glands that produce it such as the prostate gland.

The endocrine system is a collection of glands that secrete hormones. Learn all about the different glands you need to know, and how hormones work.