Exam 13: Cardiovascular System

When the ventricular walls contract,the

In an electrocardiogram (ECG)pattern,the P-Q interval indicates how long it takes for the cardiac impulse to travel from the

What region of the body receives its blood supply from the vertebral arteries?

Blood from the face and scalp is drained by the

The pain of angina pectoris comes from a blockage in an artery that supplies the

Which of the following structures does NOT require stimulation from nerve fibers or other agents?

Which of the following is NOT a branch of the aorta?

The effect on the heart of excess potassium ion concentration usually is

Atrial repolarization produces the T waves seen in ECG tracings.

Sympathetic branches of the autonomic nervous system stimulate smooth muscle in artery and arteriole walls to

How does heart rate affect blood pressure?

Osmotic capillary pressure forces fluid out into the tissues.

The cardiac control center is found in this part of the brain.

The cardiovascular system consists of all of the following except

The __________ drains blood from the wall of the heart into the right atrium.

The pulmonary circuit

Blood flow that travels from the heart to the lungs for gas exchange and then back to the heart describes the ___________ circuit.

The blood vessels whose walls are thin enough to allow exchange of gases between the blood and tissue fluid are ________.

What part of the conduction system fibers extend into the papillary muscles?

What chamber of the heart pumps blood to the left lung?