Exam 10: The Blood Vessels and Blood Pressure

When the receptor potential of the baroreceptors decreases, the cardiovascular center responds by bringing about an increase in

The process of _________________ (two words) determines the distribution of the extracellular fluid volume between the plasma and interstitial fluid.

Select the correct statement about veins.

Mean arterial pressure is determined by the equation ____________________ x ____________________.

In most tissues, glucose, a water-soluble substance, crosses capillary walls through

The primary means by which individual substances are exchanged between the blood and surrounding tissues is by bulk flow.

The vessels with the greatest total cross-sectional area are the arteries.

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 rate of firing in afferent nerves reaching the cardiovascular control center ____ the sympathetic nerve stimulation of the cardiovascular system.

The skeletal muscle pump adds to the effect of gravity on the venous system.

The myogenic response refers to vascular smooth muscle's tendency to

The movements of fluid across the capillary wall is influenced by

Indicate what effect the changes in question would have on blood flow using the following answer code: a.increases blood flow b.decreases blood flow c.no effect on blood flow -Increasing the radius of a vessel

The flow rate of blood is the same in all segments of the vascular tree, but the velocity of blood flow is slower in the capillaries than in other segments of the vascular tree.

The effective circulating volume is reduced when blood collects in distended varicose veins.

Varicose veins develop mainly from the incompetent function of the

Indicate the relative comparison of each of the paired items by writing the appropriate letter in the blank using the following answer code: a.A is greater than B. b.B is greater than A. c.A and B are equal. _______A. Bload tlow thraugh an arteride upan increased sympathetic activty ________ B. Blood flow through an arteriole upon decreased sympathetic activity _________A. Vencus return upan increased sympathetic stimulatinu of veins __________B. Blood flow through a vein upan decreased sympathetic activity _________A. Velacity of bloded flow thaugh the veins _________B. Velacity of blade flow thaughe thpillaries _________A. Local arterialar radius in the presence af local decreased $\mathrm { O } _ { 2 }$ and increased $\mathrm { CO } _ { 2 }$ concentrations __________B. Local arteriolar rahius with narmal local cancentrations of $\mathrm { O } _ { \mathbf { 2 } }$ and $\mathrm { CO } _ { 2 }$ _________A. Circulatian through the shan wuring exercise _________B. Circulation throuph the sian atrest _________A. Circulation to the brain atrest __________B. Circulation to the brain during an exarninetion __________A. Net reabsarption pressure at the venular end of the capillary ___________B. Net ultrafiltation pressure at the arteriolar end of the capillary

Arteriolar resistance is regulated by both local controls and extrinsic controls.

Hypertension may be caused by all of the following except

The baroreceptors are usually no longer functional in the presence of hypertension.

____________________ controls are primarily responsible for matching tissue blood flow with the metabolic needs of the tissue involved.