DIRECTIONS: Choose the best letter and place in the blank 1. Which artery(s) is

Question

DIRECTIONS: Choose the best letter and place in the blank 1. Which artery(s) is not part of the Circle of Willis a.communicating b. basilar c. cerebral d. vertebral e. A&B; f. B&C; G. B&D; 2. The largest leucocyte is the: a. eosinophil b. monocyte c. basophil d lymphocyte e.neutrophil f.none ot 3. Histamine and heparin are released from: a. eosinophil b. monocyte c. basophil d. lymphocyte e.neutrophil f. none o/t 4. Which structure is not part of the heart a. mitral valve b. trabeculae carnae c. pulmonary semilunar valve d. papillary muscles e.none 5. The kidney hormone that stimulated RBC release from bone marrow to increase BP was: a. renin b. aldosterone c. erythropoietin d. adrenalin e.erythrorenin f. none ot 6. Which is the most numerous type of WBC in circulation: a. monocyte b. neutrophil c. lymphocyte d.basophil e. eosinophil f.none 7. Plasma can include all of the following except a. hormones b. water c. electrolytes d. organic compounds e. wastes f. none 8. Which factor does not affect BP maintenance: a blood volume b. placqu e in arteries c.blood composition d. cardiac output e. plasma antibodies f. none oft 9. Which blood type is considered the "universal recepient a. A b. B c. AB d. O e. O- f. none o/t 10. Which type of blood vessel has the best control over its lumen shape: a. artery b. vein c. capillary d. A&C; e.B&C; f. none oft 11. Cellular respiration occurs in the: a. nucleus b. nucleolus c. RER d. mitochondria e golgi f. none o 12. Rh+ means the: a. agglutinin is Rh+ b. agglutinin is attached to an RBC c. agglutinogen is Rh+ d. agglutinogen is in the plasma e. antibody is Rht f. none ot

Explanation / Answer

Solving the first 4 subparts:---

1)

The circle of Willis is a part of the cerebral circulation and is composed of the following arteries:

Anterior cerebral artery (left and right)

Anterior communicating artery

Internal carotid artery (left and right)

Posterior cerebral artery (left and right)

Posterior communicating artery (left and right)

So clearly vertebral and basilar arteries are not the part. so B & D is the answer.

2.

Monocytes (b) are the largest phagocytic leucocytes.

3.

Basophils and mast cells secrete histamines and heparin. These immune cells share morphology and function, but basophils are found in the bloodstream while mast cells are embedded in tissues of the body.

Clearlu mast cells are not an option; so basophils (c) are the right answer.

4.

The left heart has two chambers: the left atrium, and the left ventricle, separated by the mitral valve.

The walls of the right ventricle are lined with trabeculae carneae

The pulmonary valve is located at the base of the pulmonary artery.

The papillary muscles are muscles located in the ventricles of the heart.

all the options a -d are part of heart structure.; SO (e) is the correct answer.

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