Sex is complicated for different reasons in different cultures. But, it's the entire purpose of life, so there's no reason to blush. In this episode of Crash Course Psychology, Hank talks about Kinsey, Masters and Johnson, Sexuality,...

Paul Andersen explains the major elements in the endocrine system. He explains how glands produce hormones which target cells. He differentiates between water soluble and lipid soluble hormones. He then describes the hormones and...

Sex is complicated for different reasons in different cultures. But, it's the entire purpose of life, so there's no reason to blush. In this episode of Crash Course Psychology, Hank talks about Kinsey, Masters and Johnson, Sexuality,...

You might not know this: Many of the medicines we take -- common drugs like Ambien and everyday aspirin -- were only ever tested on men. And the unknown side effects for women can be dangerous, even deadly. Alyson McGregor studies the...

Paul Andersen explains the major elements in the endocrine system. He explains how glands produce hormones which target cells. He differentiates between water soluble and lipid soluble hormones. He then describes the hormones and actions...

Puberty is a wild time in human bodies, and so much goes on as they transform from a child to an adult. But it turns out, the whole process is controlled by a single protein - and it’s probably one you’ve never even heard of.

Our immune systems are generally pretty great, but sometimes they can turn on us. And for some reason, these autoimmune conditions mostly affect women.

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.

Being a teenager is hard. Especially when hormones play their part in wreaking havoc on the teenage body and brain. In this episode, Hank explains what is happening to the during the angsty-time. ----------

Human reproduction is complicated an important, and it's going to take a four part series for us to cover it. Today, we're kicking that off with the female reproductive system, starting with how sex hormones affect oogenesis and...

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...

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Learn how bones change shape to form the adult skeleton, the problems this causes for growing teenagers, and how to ensure healthy bones for life. Biology - Being Human - Learning Points. Hormones released during puberty cause a rapid...

Dive into the intriguing world of gender differences in love, attraction, and relationships. Explore how initial attractions are influenced by physical appearances and subtle cues like pupil dilation, and how hormones like adrenaline,...

Explore the myriad of changes that occur during adolescence, including the onset of acne, hair growth, and the deepening of the voice. This video delves into the scientific reasons behind these transformations, offering insights into...

This video was sponsored by Brilliant. To try everything Brilliant has to offer—free—for a full 30 days, visitef='http://brilliant.org/ScienceABC/.' target='_blank' rel='nofollow'>visit The first 200 of you will get 20% off...

CAH is a genetic condition that affects the way hormones are made in the adrenal gland. In this simple animated video, we explain how it occurs, the symptoms that result, and how it can be treated.

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Your body produces 50 different hormones that regulate everything in your body. This video covers some important endocrine glands and their hormones. The major endocrine glands are: the hypothalamus, the pituitary glands, the pineal...

We've already learned about hormones in the context of the endocrine system, but now let's get a closer look at how these influence the development of sexual characteristics as well as sexual behavior. How and when does this happen? How...

This video tutorial provides an overview of the adrenal gland (topography, parts, vascular supply, histology, hormones, etc..). 0:00. Introduction 0:22. Adrenal gland topography 2:06. Adrenal cortex and medulla 2:32. Vascular supply...

Steroids have gotten a pretty bad rap! In reality, they're not just the big bad anabolic steroids. This class of molecules includes many vitamins as well as cholesterol. Cholesterol has also gotten a bad rap! We need cholesterol for our...