« previous next »
« previous next »
 

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Steroid hormone interacting with an intracellular receptor. Steroid hormone interacting with an intracellular receptor.
The renin–angiotensin–aldosterone pathway The renin–angiotensin–aldosterone pathway
Classification of Sex Steroid Hormones Classification of Sex Steroid Hormones
Angiotensin II Receptor Blockers, Aldosterone Antagonists, and Renin Inhibitors Angiotensin II Receptor Blockers, Aldosterone Antagonists, and Renin Inhibitors
Steroid hormone receptors Steroid hormone receptors
ACTH, aldosterone, and ADH release. ACTH, aldosterone, and ADH release.
Video: Chemical Changes

For a complete list of videos, visit our video library