BIO 251 - Unit Exam 2: Part 1. Questions & Answers. Complete Solutions Guide. All 100% Correct.

Unit Exam 2 part 1
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Part 1 of 3 - Part 1 30.0/ 30.0 Points
From chapter 20

Question 1 of 40
2.0/ 2.0 Points
Venous return is affected by all EXCEPT:



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A. Skeletal and muscle activity



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B. Values lining the veins



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C. Thorax pressure changes



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D. Temperature changes in the body



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E. All of the above affect venous return.



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Question 2 of 40

,2.0/ 2.0 Points
The pulmonary arteries carry blood to the______.



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A. Systemic system



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B. Lungs



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C. Ventricles



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D. Heart



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E. Aorta



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Question 3 of 40
2.0/ 2.0 Points
The amount of blood pumped by either ventricle in one minute is called.



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A. Stroke volume

, 

B. Cardiac output



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C. End systolic volume



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D. Starling output



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E. Systolic volume



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Question 4 of 40
2.0/ 2.0 Points
What is the sequence of layers of the blood vessels (veins or arteries) from outside to the inside?



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A. Tunica intima, tunica media, tunica externa



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B. Tunica externa, tunica media, tunica intima



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