Bio 277 Lecture Powerpoints

Question 1

What type of drug would directly increase the force of contraction of this heart muscle?
A. an ACE inhibitor
B. a chronotropic agent
C. an inotropic agent
D. a calcium channel blocker

Answer 1

C. an inotropic agent

Question 2

Which of the following drugs would directly reduce heart rate when given to a hypertensive patient?
A. diuretics
B. beta blockers
C. angiotensin II receptor blockers
D. ACE inhibitors

Answer 2

B. beta blockers

Question 3

Why do children suffering from this condition have so much edema?
A. levels of protein in the plasma are very low, reducing colloid pressure
B. protein leaks into ISF pulling water along with it
C. they develop hypertension from very high blood volume that squeezes too much fluid out
D. they gain weight from eating so many carbohydrates
E. nobody really understands how this happens

Answer 3

A. levels of protein in the plasma are very low, reducing colloid pressure

Question 4

Which direction should water move based on solute concentration?
A. into the capillary
B. out of the capillary

Answer 4

A. into the capillary

Question 5

Histamine normally acts as a ______.
A. systemic vasodilator
B. systemic vasoconstrictor
C. local vasodilator
D. local vasoconstrictor

Answer 5

C. local vasodilator

Question 6

Anaphylactic shock occurs when histamine is released systemically, causing:
A. a large increase in MAP
B. A large decrease in MAP
C. No change in MAP

Answer 6

B. A large decrease in MAP

Question 7

This drop in MAP is due to:
A. decreased cardiac output
B. reduced fluid volume
C. reduced peripheral resistance

Answer 7

A. decreased cardiac output
C. reduced peripheral resistance

Question 8

A drug that closes calcium-entry channels on myocardial pumping cells should:
A. increase heart rate
B. reduce stroke volume
C. depolarize heart
D. increase MAP

Answer 8

B. reduce stroke volume

Question 9

Treatment of WPW patients with beats blockers would most likely:
A. worsen tachycardia
B. stop the heart completely
C. slow down the heart rate
D. increase Pna+ in AR cells

Answer 9

C. slow down the heart rate

Question 10

When permeability to K+ is increased:
A. potassium enters a cell
B. potassium leaves a cell

Answer 10

B. potassium leaves a cell

Question 11

Circled 4 Represents:
A. depolarization
B. repolarization

Answer 11

B. repolarization

Question 12

Circled 4 Represents:
A. potassium influx
B. potassium efflux

Answer 12

B. potassium efflux

Question 13

Which step would be most influenced by aspirin?
A. thrombin formation
B. platelets aggregate into loose platelet plug.
C. cell growth and tissue repair
D. fibrin slowly dissolved by plasmin

Answer 13

B. platelets aggregate into loose platelet plug.

Question 14

Which step would be most influenced by TPAs?
A. thrombin formation
B. platelets aggregate into loose platelet plug.
C. cell growth and tissue repair
D. fibrin slowly dissolved by plasmin

Answer 14

D. fibrin slowly dissolved by plasmin