We’re the only primate without a coat of thick fur. It turns out that this small change in our appearance has had huge consequences for our ability to regulate our body temperature, and ultimately, it helped shape the evolution of our...

We have lots in common with our closest primate relatives. But comparatively, humans seem a bit... underdressed. Instead of thick fur covering our bodies, many of us mainly have hair on top of our heads— and a few other places. So, how...

Join the Amoeba Sisters on this introduction to the Integumentary System! This video first introduces the important functions of this system. Then, this video takes a general tour through the epidermis (and each stratum of the...

Today Hank wraps up this look at your integumentary system and all the hard work it does protecting you from and helping you interact with the world around you.
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Protects...

Paul Andersen explains how X inactivation works in mammals. This process was first described by Mary Lyon. Each cell in a female will have on activated and one inactivated X chromosome. This explains why almost all calico cats are...

Have you ever gone through your laundry and noticed unsightly yellow stains in all of your white shirts? If your sweat isn't yellow, what's causing this?

It turns out there's a scientific explanation behind the saying, "It's not the heat, it's the humidity!" Learn why a hot and humid day feels so dismal and some tips to avoid the really sweaty, gross days on today's Quick Question!

Paul Andersen describes four important homeostatic loops in biology. He begins with a brief description of the elements of a homeostatic loop. He then describes how the hypothalamus helps us maintain a stable internal body temperature....

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

You probably know that sweating is a way for your body to cool off, but how does it help? And why don't other animals, like cats of dogs sweat? Join Jessi and Squeaks to learn all the answers to these questions and more!

Squeaks is getting ready to head back to school and he couldn’t be more excited! To make sure he’s all set for the first day, he and Jessi are watching some videos so he goes in confident and prepared!

Most of us don't need more than one whiff to identify that generally unpleasant, characteristic smell we call body odor. But it's a surprisingly complex phenomenon, influenced by our genetic makeup, age, diet, and hygiene. So what is...

Explore the physiological reasons behind excessive sweating and body odor, including conditions like hyperhidrosis. This segment explains the role of sweat glands and the interaction of sweat with bacteria on the skin, which leads to...

Delve into the curious world of food-related phenomena as science explains why certain foods can affect us in unexpected ways. From the pungent aftermath of eating asparagus to the persistent odor of garlic and the unpleasant taste of...

Let's learn why our bodies sweat!

Coach Socrates explains to Miss Palomine that the skin is the body’s largest organ. They then discuss why it’s so important to take care of your skin.

This video explains the science behind sweating, including why some people sweat more or less than others, and the medical conditions of hyperhidrosis and anhydrosis. It also debunks the myth that sweat causes body odor and provides tips...

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...

This video tutorial could be called "Sympathetic nervous system LIGHT" because it is designed to cover the principles ... the foundation of sympathetic pathways. The specifics of each organ/tissue innervated by sympathetic pathways will...

I know we've only covered two out of the four types of tissue, but that will be enough to start looking at some of the systems of the human body. We will start with the one that is easiest to see, the integumentary system. This is made...

This video is answering the question of why do we sweat.

Structure and layers of the skin.

This video explores the process of sweating and why it occurs. It explains how the body's temperature regulation system works, how sweat is produced, and why it can sometimes have an unpleasant odor. Additionally, it emphasizes the...

This video discusses the different types of sweat produced by the body and how they are influenced by various stimuli. It explains the functions of the apocrine and eccrine glands in producing sweat and their roles in thermal regulation...