Exam 13: The Vascular System

In capillaries, diffusion is the process by which ____________________ and ____________________ are exchanged.

The blood pressure in pulmonary circulation is always ____________________, to prevent filtration and accumulation of fluid in the ____________________.

The large arteries are elastic and are stretched by left ventricular ____________________, thereby lowering ____________________ BP.

Veins are able to constrict and increase venous return because of their:

Which of the following statements are true of the nervous regulation of blood pressure (BP)? (Read carefully and select all of the correct statements.)

Veins carry blood from ____________________ to the ____________________.

If venous return decreases, the heart contracts ____________________ forcefully, and cardiac output ____________________.

A systolic BP value is the pressure when:

Which statement is NOT true of the circle of Willis?

The circle of Willis supplies the ____________________ and is an example of an arterial ____________________.

The fetal structure that permits blood to flow from the pulmonary artery to the aorta is the:

In capillaries, nutrients are brought out into tissues by the process of ____________________.

Which of the following statements are true of arteries and veins? (Read carefully and select all of the correct statements.)

In capillaries, filtration is the process by which:

Which statement is NOT true of the effects of hormones on blood pressure?

The effect of the hormone norepinephrine on blood pressure is to:

In fetal circulation, blood in the umbilical ____________________ has a high level of oxygen, and blood in the umbilical ____________________ has a high level of carbon dioxide.

In the wall of a vein, the layer that is folded into valves is the ____________________.

In capillaries, albumin creates ____________________ pressure, a pulling pressure.

Venous return is the amount of blood that is returned to the ____________________.