Exam 7: Cardiac Physiology

Complete the following statements by using the answer code (options may be used more than once or not at all): -The two main determinants of cardiac output are stroke volume and _____.

What is the term for the period lasting from closure of the AV valve to opening of the aortic valve?

MATCHING Match the term with the correct characteristic by using the answer code: -encircles the heart and secretes a lubricating fluid

Indicate the effects of sympathetic and parasympathetic stimulation on the heart by using the answer code (options may be used more than once or not at all): -increases the heart rate

MATCHING Match the term with the correct characteristic by using the answer code: -carries cholesterol away from cells

Complete the following statements by using the answer code (options may be used more than once or not at all): -The volume of blood ejected by each ventricle each beat is known as the _____.

The stroke volume is the total volume of blood ejected by both ventricles per minute.

The average resting heart rate is normally established by the rhythm of the AV node.

Indicate which pressure relationship exists during the time in question by using the answer code (options may be used more than once or not at all): -when the aortic valve closes

What is the function of the ventricular conduction system of the heart?

Match the cardiovascular feature with the correct characteristic by using the answer code: -referred cardiac pain

Which of the following factors will NOT increase cardiac output?

What does a whistling murmur heard between the second and first heart sound indicate?

The only point of electrical contact between the atria and the ventricles is the AV valve.

Which criteria must be met for the heart to function efficiently?

An increase in cardiac sympathetic activity ____________________ the velocity of impulse conduction through the heart.

What rhythm characterizes atrial flutter as impulses pass from the AV node to the ventricles?

Indicate which ion is involved in each event being described by using the answer code (options may be used more than once or not at all): -Explosive increase in membrane permeability to _____ brings about the rapidly rising phase of the action potential in contractile cardiac cells.

The ____________________ is the difference between cardiac output at rest and maximal CO.

Indicate which pressure relationship exists during the time in question by using the answer code (options may be used more than once or not at all): -during ventricular diastole