Pulmonary circulation - Test Questions

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Question 61

Question:   Name the major arteries of systemic circulation.

Answer:    The major arteries of systemic circulation are:
1) Aorta - the main artery that leaves the heart
2) Coronary artery - to the heart wall
3) Sub-clavian artery - to the shoulder region
4) Carotid artery - to the neck and head region
5) Mesentric region - to the stomach and intestines
6) Hepatic artery - to the liver
7) Iliac - to the genitals and the legs

Question 62

Question:   What is pulmonary circulation ?

Answer:    The right ventricle pumps blood into the pulmonary artery that carries it to the lungs. After purification in the lungs, the blood is carried back by the pulmonary vein to the left auricle of the heart. This circulation of blood between the heart and the lungs is called pulmonary circulation.

Question 63

Question:   What are the components of the lymphatic system?

Answer:    The components of the lymphatic system are: 1) The fluid lymph 2) The channels through which the fluid flows - smaller lymph vessels and larger lymph ducts 3) The enlarged cavities called the lymph glands or nodes

Question 64

Question:   What is tissue fluid? How is it formed?

Answer:    The fluid that escapes from the blood vessels into the interstitial spaces is called the tissue fluid. The blood flows under high pressure in the arteries. These arteries branch out as arterioles and then as capillaries. The walls of these vessels are very thin. The blood under pressure comes out into the tissue spaces. The cellular components and the larger proteins are not able to come out. Thus, the blood without the cells and the proteins is called the tissue fluid.

Question 65

Question:   What are lymph nodes? Name one.

Answer:    The lymph vessels and ducts are enlarged at certain areas. These enlarged portions are called the lymph nodes or lymph glands. They contain lymphocytes that are involved in the production of antibodies during infection. The nodes are also lined by phagocytic cells that engulf the foreign bodies like the bacteria. The tonsil in the throat is an example of a bacterial infection.