« previous next »
« previous next »
 

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Structure of cholesterol and steroid hormones derived from cholesterol Structure of cholesterol and steroid hormones derived from cholesterol
Classification of Sex Steroid Hormones Classification of Sex Steroid Hormones
Biosynthetic routes from pregnenolone to other steroid hormones Biosynthetic routes from pregnenolone to other steroid hormones
Steroid hormone receptors Steroid hormone receptors
The renin–angiotensin–aldosterone system The renin–angiotensin–aldosterone system
The renin–angiotensin–aldosterone pathway The renin–angiotensin–aldosterone pathway
Video: A Human Karyotype Preparation Animation

For a complete list of videos, visit our video library