The Lymphatic System

The Lymphatic System

The Lymphatic system

• This system is very important in helping the body fight infection.

• Not all animals have a lymphatic system.

• It works alongside the blood circulatory system to help get rid of toxins.

• It is made up of a network of lymph vessels, tissues and organs.

• Lymph is a clear fluid rich in white blood cells, especially lymphocytes.

• Lymph is formed from blood plasma which is forced out of blood vessels by pressure and moves around tissues until it collects in the lymph vessels.

Functions of the lymphatic system

• Returns interstitial fluid from tissues to the circulatory system.

• Filters lymph to remove waste and toxic materials.

• Produces and transports antibodies and lymphocytes.

• Transports digested fat from the intestine to other sites in the body for storage.

Multiple Choice

What is the role of the spleen?

• Controls levels of protein in the blood

• Controls levels of leucocytes in the blood

• Controls levels of erythrocytes in the blood

Multiple Choice

True or false. All animals have a lymphatic system?

• True

• False

Multiple Choice

Where do T cells mature?

• In the thymus

• In the lymph nodes

• In the spleen

Multiple Choice

Which cells produce antibodies?

• T cells

• Lymphocytes

• B cells

Multiple Select

Lymph composition varies around the body, but generally speaking what does it contain? select all that apply

• Carbohydrates

• Lipids

• Protein

• Glucose

• water

Multiple Choice

Where is the thymus located?

• In front of the heart

• Next to the spleen

• Near the kidneys

• In the stomach