43) The visceral pericardium is the same as the A) endocardium. B) myocardium. C

Question

43) The visceral pericardium is the same as the A) endocardium. B) myocardium. C) parietal pericardium. D) epicardium. E) mediastinum. 44) Red blood cell production is regulated by the hormone A) thymosin. B) angiotensin. C) M-CSF. D) erythropoietin. E) renin. 45) Drugs that block the beta-one adrenergic receptors will A) increase contractility. B) increase cardiac output. C) Increase heart rate. D) decrease the end-systolic volume. E) decrease heart rate, 46) The yellow color that is visible in the eyes and skin in jaundice results from A) excessive amounts of bilirubin in the plasma B) extensive breakdown of RBCs. C) destruction of hemoglobin. D) all of the above E) none of the above 47) The wall of the left ventricle is thicker than the right because A) the left ventricle produces a higher pressure than the right. B) the left ventricle does more work than the right ventricle. C) the left ventricle pumps against greater resistance than the right ventricle D) all of the above E) none of the above 48) The process of red blood cell production is called A) erythropoiesis B) erythropenia. C) hematopenia. D) hemocytosis. E) erythrocytosis. 49) People with type AB blood are considered the universal recipient" for transfusions because A) they are usually Rh negative. B) they usually have very strong immune systems. C) their blood lacks A or B antibodies. D) their blood cells lack A and B antigens. E) their blood is plentiful in A and B antibodies.

Explanation / Answer

Question 43

Answer is D (epicardium)

the pericardium is the layer that covers the outer side of the heart and provides contraction. the epicardium is the layer located between heart and pericardium. so it is called or same as visceral pericardium.

Question 44.

Answer is D (Erythropoietin)

This hormone is essential for the increased production of RBC. It acts on specific bone marrow cells and improves the production of RBC.

Question 45

Answer is E (Decreases heart rate )

The heart has beta -one and beta - 2 receptors. the sympathetic neurotransmitters bind to it and produce contraction and increase heart rate. the beta one blockers produce the negative inotropic effect. that results in decreased heart rate.

Question 46

Answer is D (All the above)

jaundice is identified by the presence of yellow-colored skin and eyes. the yellow color is mainly due to an increased level of bilirubin in the blood.

The level of bilirubin depends on the breakdown of RBC and destruction of hemoglobin in the body.

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