Chapter 14: Blood Vessels and Circulation
Multiple Choice



1.  

The layer of vascular tissue that consists of an endothelial lining and an underlying layer of connective tissue dominated by elastic fibers is the:



2.  

Smooth muscle fibers in arteries and veins are found in the:



3.  

One of the major characteristics of the arteries supplying peripheral tissues is that they are:



4.  

The only blood vessels whose walls permit exchange between the blood and the surrounding interstitial fluids are:



5.  

The unidirectional flow of blood in venules and medium-sized veins is maintained by:



6.  

The "specialized" arteries that are able to tolerate the pressure shock produced each time ventricular systole occurs and blood leaves the heart are:



7.  

Of the following blood vessels, the greatest resistance to blood flow occurs in the:



8.  

The distinctive sounds of Korotkoff heard when taking the blood pressure are produced by:



9.  

The two major factors affecting blood flow rates are:



10.  

The most important determinant of peripheral resistance is:



11.  

From the following selections, choose the answer that correctly identifies all the factors which would increase blood pressure. (Note: CO cardiac output; SV = stroke volume; VR = venous return; PR peripheral resistance; BV = blood volume.)



12.  

Atrial natriuretic peptide (ANP) reduces blood volume and pressure by:



13.  

The central regulation of cardiac output primarily involves the activities of the:



14.  

An increase in cardiac output normally occurs during:



15.  

Stimulation of the vasomotor center in the medulla causes and inhibition of:



16.  

The three primary interrelated changes that occur as exercise begins are:



17.  

The only area of the body where the blood supply is unaffected while exercising at maximum levels is the:



18.  

The three elastic arteries that originate along the aortic arch and deliver blood to the head, neck, shoulders, and arms are the:



19.  

The large blood vessel that collects most of the venous blood from organs below the diaphragm is the:



20.  

The three blood vessels that provide blood to all of the digestive organs in the abdominopelvic cavity are the:

Note: answer choices in this exercise are randomized.

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