Exam 30: Circulation of the Blood

The chemoreceptors in the carotid bodies are particularly sensitive to:

Grief tends to make the heart beat faster.

SV (stroke volume) ´ HR (heart rate) = CO (cardiac output).

Explain how the Starling law relates to cardiac output.

An increase in heart rate tends to increase:

The resting cardiac output from the left ventricle is about 5 liters.

Parasympathetic control of the heart depends on the glossopharyngeal nerve (cranial nerve IX).

Minute volume is equal to the:

Venous valves would not be necessary in the jugular veins of the neck.

The capillaries perform the transport function of the circulatory system.

Blood vessels can hold much more blood than is present in the body.

Two important baroreceptors are located in the aorta and the carotid artery.

The Fick law of the heart says that, within limits, the longer the heart fibers are at the beginning of a contraction, the stronger the contraction will be.

ADH is short for antidiuretic hormone.

The drop in blood pressure is greater between the aorta and capillary bed than it is between the capillaries and the venae cavae.

When you take a blood pressure reading, the first sound that you hear (top reading) is the:

In order for all the cells of the body to survive, blood supplies to all cells must be equal.

Hydrostatic pressure tends to decrease from the arterial end of the capillary to the venous end of the capillary.

The arterial pulse is caused by the ventricles of the heart; the venous pulse is caused by the atria of the heart.

Cardiac output is determined by multiplying stroke volume and heart rate.