lymphatic system

Question 1

what is the lymphatic system

Answer 1

Is a network of lymph capillaries, including lymph vessels and nodes. The lymphatic system collects fluid and returns it to circulation. The lymphatic system is a one-way system.

Question 2

describe the process when the lymphatic system is in action

Answer 2

• as blood enters the capillaries, tissue fluid passes through the capillary walls. This fluid is then returned back to the capillary however with a reduced amount. As some fluid has been left behind.
• the lymphatic system collects this excessive tissue fluid and returns it to the circulation
• the collected tissue fluid is considered to be lymph as it enters the lymph capillary

Question 3

where can lymph nodes be found

Answer 3

• neck
• armpits
• groin
• back of the knee

Question 4

what are lymph nodes

Answer 4

Lymph nodes act as a filter for the lymph. These filters will remove proteins, bacteria and fungi as the lymph nodes contain a mesh that traps these molecules. These molecules are destroyed by white blood cells

Question 5

what are lymph capillaries

Answer 5

They are larger than blood capillaries and more permeable. They are found in the spaces between cells in tissues. They join up with larger lymph vessels which connect to form two lymphatic ducts that empty lymph

Question 6

describe the movement of the lymph

Answer 6

1. Enters through vessels on the lymph node.
2. Filters through the spaces of the lymphoid tissue.
3. Passes out through vessels on the other side.
4. Lymph passes through several nodes before entering the blood circulation.