Blood vessels

Question 1

Describe the role of the blood vessels in the homeostasis of blood pressure

Answer 1

arterioles have vasoconstriction, raises blood pressure and also vasodilation decreased blood pressure

Question 2

What % of blood consists of formed elements (cells and cell fragments)

Answer 2

45%

Question 3

What % of fluid were the formed elements suspended

Answer 3

55%

Question 4

List the main constituents of plasma

Answer 4

Mainly water, proteins, other solutes

Question 5

What is the normal range for pH of blood

Answer 5

7.35-7.45

Question 6

State the function of red blood cells (erythrocytes)

Answer 6

transport oxygen

Question 7

State the function of white blood cells (leucocytes)

Answer 7

Fight infection

Question 8

State the function of neutrophils

Answer 8

Phagocytic against bacteria

Question 9

State the function of eosinophils

Answer 9

Phagocytise antibody - antigen complexes, effective against parasitic worms

Question 10

State the function of basophils

Answer 10

Release histamines in allergic reactions to intensify the inflammatory response

Question 11

State the function of lymphocytes (T-cells, B-cells, natural killer cells)

Answer 11

T - cells = attack viruses
B - cells = release antibodies, destroy bacteria
NK cells = kill variety of infectious microbes

Question 12

state the function of monocytes (macrophages)

Answer 12

Phagocytic for pathogens and worn out cells

Question 13

State the function of platelets

Answer 13

Generate clotting response for repair + healing of tissues, form a plug

Question 14

Name the locations where red blood cells are produced before circulating in the bloodstream

Answer 14

Red bone marrow