Chapter 21 Objectives
Blood Vessels

1. Compare the structure and function of the three layers of an artery.

2. Distinguish between expansion/recoil and vasoconstriction/vasodilation.

3. Identify the blood vessels that play a large role in regulating blood pressure.

4. List the factors that aid the return of blood to the right atrium.

5. Identify the three pressures that move plasma into interstitial fluid.

6. Explain how edema is a factor related to the movement of fluid form the capillaries.

7. Describe the factors that affect peripheral resistance.

Take a Quiz - Chapter 21

1. Identify the layer of the artery that withstands the pressure of blood after ventricular
    systole.
        a. tunica interna
        b. tunica media
        c. tunica externa

2. The term below identified with the the contraction of the smooth muscle of a blood
    vessel is:
        a. expansion
        b. recoil
        c. vasoconstriction
        d. vasodilation

3. The factors that determine venous return include:
        a. semilunar valves in veins
        b. thoracic cavity pressures during breathing
        c. the oxyhemoglobin dissociation curve
        d. heparin and coumadin

4. Identify the plasma protein responsible for the osmotic pressure in the capillaries.
        a. TP-A
        b. fibrinogen
        c. albumin
        d. IgG

5. The pressure in the capillaries created by the vasocontriciton or vasodilation of the
    arterioles is called:
        a. blood hydrostatic pressure
        b. interstitial fluid osmotic pressure
        c. blood osmotic pressure

6. Edema can be caused by:
        a. increase in blood pressure
        b. loss of albumin in the kidneys
        c. a blocked lymphatic vessel
        d. leaky capillaries due to infections
        e. all of the above

7. Identify the factor that would increase peripheral resistance in the blood vessels.
        a. vasodilation
        b. polycythemia
        c. dehydration
        d. anemia