Exam 13: Cardiovascular System

Hypotension may cause the net hydrostatic pressure in a capillary to decrease. What would be the effect on the net filtration pressure?

The outer layer of the heart wall is called the __________.

Depolarization of the atria is an electrical event that produces what pattern in an ECG tracing?

The descending aorta divides near the brim of the pelvis to form the right and left __________ arteries.

What layer of a blood vessel wall is composed of simple squamous epithelium?

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

Relaxation of the heart is called __________.

What is the pacemaker of the heart?

During ventricular contraction, what are the position of the valves?

What is the function of plasma proteins in capillary exchange?

What is the skeleton of the heart?

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

A patient is in the emergency department for a severe anxiety attack. Their doctor administers a dose of potassium to control their elevated heart rate. Why would potassium potentially be a treatment for the cardiovascular effects of an anxiety attack?

In humans, circulation of the blood is a closed system.

Atrial repolarization produces the T waves seen in ECG tracings.

Blood leaving the muscles near the thumb would first flow into the __________ vein.

To examine blood flow through an area more closely, a radiologist can inject contrast dye into an artery for an angiogram. If the dye was injected into the superior mesenteric artery, the radiologist is trying to examine blood flow through what area of the body?

In what part of the brain is the cardiac control center located?

Osmotic pressure forces molecules in the blood out through capillary walls.

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