Tick the appropriate answer
1. Which of the following have thin walls?
a. auricles
b. ventricles
c. Iymph nodes
d. None of these
2. Which of the following are the lower chambers of the heart?
a. arteries
b. ventricles
b. auricles
b. veins
3. The vein which brings deoxygenated blood from the posterior part of the body is the
a. pulmonary vein.
b. superior vena cava
c. inferior vena cava.
d. None of these
4. The main artery that emerges from the left ventricle of the heart is the
a. pulmonary vein.
b. superior vena cava
c. inferior vena cava.
d. aorta
5. Which blood group is known as the universal recipient?
a. A
b. B
c. AB
d. O
6. Blood group A has
a. antigen A and antibody B.
b. antigen B and antibody B.
c. antigen A and antibody A.
d. antigen B and antibody A.
7. Which of these is a fluid that contains infection-fighting white blood cells?
a. platelet
b. Iymph
c. plasma
d. none of these
Dear Student, i) Auricles have the thin walls because they only receive blood and pump the blood into ventricles. So, correct option is (a). ii) Two ventricles- right and left are the lower chambers of the heart. So, correct option is (b). iii) Inferior vena cava receives deoxygenated blood from the posterior part of the body. So, correct option (c). iv) Aorta emerges from the left ventricles. So, correct option is (d). v) AB blood group is universal recipient because it has antigens for both A and B but no antibody. So, correct option is (c). vi) Blood group A has antigen A and antibody B. So, correct option is (a). vii) Lymph contains infection-fighting white blood cells.So, correct option is (b) . Regards