« previous next »
« previous next »
 

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

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?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Inguinal Lymph Nodes Inguinal Lymph Nodes
Comparative structure of arteries, capillaries, and veins. Comparative structure of arteries, capillaries, and veins.
Lymphatic vessels pick up excess tissue fluid, purify it in the lymph nodes, and then return it to t Lymphatic vessels pick up excess tissue fluid, purify it in the lymph nodes, and then return it to t
Structures of the lymphatic pathway from smallest to largest. Structures of the lymphatic pathway from smallest to largest.
Lymphatic Capillaries Lymphatic Capillaries
Lymphocyte Activity in a Lymph Node Lymphocyte Activity in a Lymph Node
Video: Chemical Synapse Animation

For a complete list of videos, visit our video library