36. A positive inotropic agent: A. B. C. D. E. Increases force of contraction in

Question

36. A positive inotropic agent: A. B. C. D. E. Increases force of contraction in the heart. Decreases force of contraction in the heart. Is used to lower blood pressure Decreases cardiac output. None of the above 37. Which of the following is not true regarding hypertension? A. It may be caused by atherosclerosis. B. ACE inhibitors alleviate hypertension by causing vasodilation C. Primary hypertension is easily curable D. Diuretics act to decrease blood volume E. None of the above 38. Cardiac output is increased by: Increased end-diastolic volume A. B. C. D. E. Decreased sympathetic activity to the heart. Decreased end-diastolic volume Decreased venous return None of the above 39. When the baroreceptor reflex is triggered by a decline in blood pressure: Sympathetic activity increases. Cardiac output increases. A. B. C. Peripheral resistance decreases. D. E. A and B A, B, and C 40. If blood pressure increases, which of the following will be true? A. Increased urea absorption B. More concentrated urine C. Lower GFR D. Larger volume of urine E. Lower rate of blood flow

Explanation / Answer

36. A positive inotropic agent:

(A) increases force of contraction in the heart.

The positive intropes strengthens the heart contractions, so it can pump more blood with fewer heartbeats. (Ex- digoxin strengthens the force of the heart beat by increasing the amount of calcium in heart cells.

37. True regarding hypertension:

(A) it may be caused by atherosclerosis.

The arteries that occur due to aging,diabetes or fatty buildup in the arteries.

38. The cardiac output is increased by:

(B) decreased sympathetic activity to the heart.

39. When the barroreceptor reflex is triggered by a decline in blood pressure:

(D) A and B

Sympathetic activity increases and cardiac output increases.

40. If blood pressure increases:

(C) lower GFR

41. Increased ADH result in:

(D) all the above are correct

ADH is produced by the hypothalamus in the brain and stored in the posterior pituitary gland at the base of the brain. ADH is normally released by the pituitary in response to sensors that detect an increase in blood osmolality or decreased in blood volume.

42. (A)

Calcium channel blockers prolong the opening of calcium channels resulting in vascular smooth muscle dialation, and increases in force of contraction.Vasodilation will result in increase in systemic blood pressure,and increase in force of contraction will decrease cardiac output.

Related Questions

Navigate

• Browse (All)
• Browse 3
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.