Cardiovascular System Part 2

These supply blood that oxygenates and nourishes the heart from the aorta.

• Cardiac veins

• Pulmonary arteries

• Coronary arteries

• Aorta

These drain the myocardium into the right atrium.

• Cardiac veins

• Pulmonary arteries

• Coronary arteries

• Aorta

Which direction does muscle depolarization occur?

• Ventricles -> atria

• Ventricles -> aorta

• Atria -> lungs

• Atria -> ventricles

Which statement below best describes the function of the SA node?

• Allows “wringing” ventricle contractions from apex toward atria

• Receives impulses and allows the atria to contract ejecting blood superiorly into arteries

• Starts the heartbeat and sets the pace

• Ends the “lub” sound, located in the left atrium and delays impulses

The cardiac cycle is a.

• The events of complete heartbeat

• Blood flow to the heart

• Blood flow through the body to the heart

• The events of “lub”

Ventricle contraction is called

• Lub

• Dub

• Systole

• Diastole

Ventricle relaxation is called

• Lub

• Dub

• Systole

• Diastole

The sound made by the closing of the AV valves is called a.

• Lub

• Dub

• Systole

• Diastole

The sound made by the closing of the semilunar valves is called a.

• Lub

• Dub

• Systole

• Diastole

Cardiac output refers to

• The amount of blood pumped out of the body into the heart

• Amount of blood in the heart at any given time

• Amount of blood in the body

• Amount of blood pumped out by each ventricle in 1 minute

Tags

NGSS.HS-LS1-3