Exam 7: Cardiac Physiology

Which of the following is the cranial nerve of the parasympathetic nervous system that signals the heart?

Complete the following statements by using the answer code (options may be used more than once or not at all): -The maximum volume of blood that the ventricle contains after filling is complete is the _____.

Describe generation of pacemaker action potentials and the cardiac conduction pathway.

Which vessel carries blood with a comparatively high concentration of oxygen?

One important function of the intrinsic control of the heart (Frank-Starling law of the heart)is to maintain the left and right cardiac outputs in balance.

During exercise,the cardiac output ____________________.

Match the cardiovascular feature with the correct characteristic by using the answer code: -freely floating clot

The ____________________ are the kinds of blood vessels that experience congestion for congestive heart failure.

Stroke volume can vary by alterations in both intrinsic and extrinsic control mechanisms.

Match heart characteristic with correct anatomical structure by using the answer code (options may be used more than once or not at all): -contraction of this generates blood pressure

An increased ESV ____________________ the stroke volume.

Which structures join adjacent cardiac muscle cells end-to-end in the ventricles?

The cardiac output is equal to ________________________

The tricuspid prevents regurgitation of blood from the right ventricle back into the right atrium.

What happens during isovolumetric ventricular contraction?

The rate of appearance of the QRS and T waves is unaffected if the heart develops a complete heart block.

MATCHING Match the term with the correct characteristic by using the answer code: -area of low electrical resistance that allows an action potential to spread from one cardiac cell to surrounding cells

Although the heart does not require the nervous system to initiate contraction events _______________

What does sympathetic stimulation of the heart do?

An increase in parasympathetic activity ____________________ the stroke volume.