Exam 44: The Circulatory System

The gastrovascular cavity of a sponge serves important functions in both the circulatory and ____ systems.

In an average person, ____ erythrocytes are produced each second.

Lymph nodes normally contain ____, which function to engulf invading organisms.

The inferior vena cava moves blood from the ____.

Why have sports governing bodies banned the use of EPO in athletes?

How do lymph nodes aid in a cancer diagnosis?

Of the cellular blood components, ____ are the smallest in size.

Why would an iron deficiency result in anemia?

The ____ regulate(s) blood pressure through the release of hormones.

Erythropoietin, a hormone that stimulates stem cells in the bone marrow to increase erythrocyte production, is produced in the ____.

In times of stress, the sympathetic nervous system decreases blood pressure.

The first evidence that the vasodilatory signal molecule was produced by ____ was reported in 1980.

Select the proper order of the propagation of an electrical (depolarization) signal in the heart.

The blood pressure in the aorta is highest during systole.

Blood pressure reduces as it moves away from the heart due mainly to ____.

In healthy adult humans, normal systolic pressure is ____ mm Hg and normal diastolic pressure is ____ mm Hg.

Arrange the structures that control cardiac output in the correct order.

Lymph moves throughout the lymph vessels due to ____.

Atherosclerosis has its most serious effects in the ____.

In the mammalian heart, the systemic and pulmonary circuits ____.