lecture 8

Question 1

if a child with nephrotic syndrome loses large amounts of albumin in the urine

Answer 1

plasma oncotic pressure decreases and edema develops

Question 2

what happens during ventricular diastole

Answer 2

the ventricles are filling with blood

Question 3

which of the following is most likely to increase stroke volume

Answer 3

A (+) inotropic drug

Question 4

furosemide, a potent diuretic, is administered in acute ventricular failure to

Answer 4

excrete excess water and relieve the edema

Question 5

a patient in heart is given a drug that is classified as a beta1-adrenergic agonist.

Answer 5

activates the beta1-adrenergic receptors and causes a (+) inotropic effect

Question 6

sympathetic nerve stimulation of the myocardium

Answer 6

causes a (+) inotropic effect

Question 7

which condition can occur as a result of low blood volume

Answer 7

postural hypotension

Question 8

Atropine is anticholinergic and antimuscarinic and therefore

Answer 8

is used to treat bradydysrhythmias such as heart block and a prolonged
P-R interval

Question 9

ventricular systole refers to

Answer 9

contraction of the ventricular myocardium

Question 10

what defines cardiac output

Answer 10

heart rate * stoke volume

Question 11

what is correct about cardiac output

Answer 11

cardiac output is determined by heart rate and stroke volume

Question 12

what is the best description of systole and diastole

Answer 12

contraction and relaxation

Question 13

what part of the brain participates in the baroreceptor reflex

Answer 13

medulla oblongata

Question 14

what is most responsible for the plasma oncotic pressure

Answer 14

albumin

Question 15

if digital (finger press) pressure is exerted over the carotid sinus, you would expect

Answer 15

that the medulla oblongata will interpret the signal as high blood pressure and therefore fire the vagus nerve

Question 16

A drug that blocks the effects of the vagus nerve

Answer 16

increases heart rate

Question 17

which of the following is most likely consequence of a very rapid heart rate

Answer 17

decreased ventricular filling (with blood)

Question 18

systemic vascular resistance decreases when the

Answer 18

arterioles dilate

Question 19

which term is afterload most associated

Answer 19

resistance

Question 20

Anxious person appears in the ER with a heart rate of 160 beats/min and indicates that he has a history of panic attacks. He is prescribed an atianxiety agent and a drug to slow his heart rate. Identify the drug

Answer 20

Beta1-adrenergic blocker

Question 21

during atrial systole, the

Answer 21

ventricles are relaxed

Question 22

what elevates blood pressure

Answer 22

vasopressors

Question 23

jugular vein distention is most associated with

Answer 23

right-sided heart failure

Question 24

a stenotic aortic valve

Answer 24

increases afterload, thereby increasing the work of the left ventricle

Question 25

blood pressure is lowest in the

Answer 25

inferior vena cava

Question 26

vegal stimulation to the heart causes

Answer 26

heart rate to slow