Lymphatic System

Question 1

Lymphatic system function?

Answer 1

Lymphatic system function?

.To return excess tissue fluid that has leaked out of the capillaries to the circulating blood.

.Remove bacteria and foreign particles from the lymph in the lymph nodes.

.Produce antibodies

Question 2

What is Lymph?

Answer 2

What is Lymph?

.Lymph is the excess fluid from tissues and has leukocytes and lymphocytes in it. It is similar to blood plasma.

.It is inside the lymphatic capillaries and vessels and is filtered by the lymph nodes then collected by the lymphatic ducts before entering the left subclavian veins and returning to the blood stream in the veins.

Question 3

Lymphatic system consists of?

Answer 3

Lymphatic system consists of?

.Lymphatic capillaries

.Lymphatic vessels

.Lymph nodes

.Lymphatic ducts

Question 4

Lymphatic flow obstruction?

Answer 4

Lymphatic flow obstruction?

.Causes the swelling of tissues due to the collection of fluid (oedema).

Question 5

Lymphatic capillaries?

Answer 5

Lymphatic capillaries?

.The vessels which work with blood to collect excess tissue fluid. They eventually unite to form lymphatic vessels.

Question 6

Lymphatic vessels?

Answer 6

Lymphatic vessels?

.The vessels which transport lymph around the lymphatic system. They have valves (semi lunar) to prevent back flow.

Question 7

Lymph nodes?

Answer 7

Lymph nodes?

.Made of lymphatic tissue

.They filter the lymph by removing harmful microorganisms, tumour cells, damaged or dead tissue cells and toxic substances and prevent septicaemia.

.They produce lymphocytes and antibodies and add them to the lymph to fight infection.

.Lymph leaves the node at the hilus.

Question 8

Lymphatic tissue?

Answer 8

Lymphatic tissue?

.Lymph nodes, the spleen and tonsils are made of lymphatic tissue.

Question 9

Phagocytes?

Answer 9

Phagocytes?

.WBCs that destroy harmful pathogenic material.

Question 10

Lymphocytes?

Answer 10

Lymphocytes?

.B lymphocytes - produces antibodies which combine with an antigen (foreign body) and neutralises it.

.T lymphocytes - helps in the destruction of foreign cells or own cells affected by a pathogen.

Question 11

Spleen functions?

Answer 11

Spleen functions?

.Forms new lymphocytes

.Destroys worn out thrombocytes and erythrocytes

.Helps to remove foreign particles from the circulation

.Acts as a blood reservoir

Question 12

Oedema?

Answer 12

Oedema?

.Swelling due to excess fluid in the tissue spaces and serous cavities because of lymphatic flow obstruction.

Question 13

Lymphatic vessels in the small intestines helps with?

Answer 13

Lymphatic vessels in the small intestines helps with?

.The absorption of fats during digestion so they can be used as energy for cells.

Question 14

Lymphatic ducts?

Answer 14

Lymphatic ducts?

.Drains lymph into veins from lymph nodes.

Question 15

Lymphatic fluid name?

Answer 15

Lymphatic fluid name?

.Chyle

Question 16

Antigen?

Answer 16

Antigen?

.A foreign substance which induces an immune response in the body by lymphocytes creating antibodies to destroy it.

Question 17

Antibody?

Answer 17

Antibody?

.A blood protein produced in response to foreign substances in the body.

.Antibodies combine chemically with foreign substances such as bacteria and viruses to destroy them.