Exam 10: The Blood Vessels and Blood Pressure

For the following questions, choose the appropriate letter from the answer code below to make the statement true. a. increases b. inhibits or decreases: c. has no effect on Decreased sympathetic nerve activity ____ the arteriolar radius.

Complete each of the following statments. Accumulation of excess interstitial fluid is known as ____________________.

Describe how vasopressin helps regulate blood pressure.

All the fluid forced out of the capillaries is filtered through the lymphatics before being returned to the venous blood.

Select the correct statement about veins.

More blood is delivered to the tissues during ventricular systole than during ventricular diastole.

Arterial walls contain a thick layer of smooth muscle and an abundance of collagen and elastin fibers.

A sudden increase in pressure within the carotid sinus leads to

Arteries ensure that blood constantly flows due to contraction of its smooth muscle layer.

For a blood pressure reading of 136/78, the 78 refers to the pressure in the major arteries when the heart's ventricles are relaxing.

The microcirculation is composed of

Which of the following is not a characteristic of capillaries?

For the following questions, choose the appropriate letter from the answer code below to make the statement true. a. increases b. inhibits or decreases: c. has no effect on Increased sympathetic nerve activity ____ the strength of cardiac ventricular contraction, ____ the stroke volume, and ____ the heart rate.

Differences in blood flow to an organ are related to the resistance to flow in the arterioles that supply that organ.

Binding of epinephrine to alpha receptors causes smooth muscle

Resistance to blood flow increases as the viscosity of the blood increases.

The arteries

Complete each of the following statments. The wall of an artery contains two types of connective tissue fibers: ____________________ provides tensile strength and ____________________ allows the vessel to recoil after being stretched.

Glucose is actively transported across the capillary walls.

Organs that do not recondition the blood are more vulnerable to reductions in blood flow than organs that perform homeostatic functions on the blood.