BIO 169 Exam 1; Questions & Answers 100%
Correct
Which of the following are important sources of resistance to blood flow? Correct
answer-All of the Above
A _________ allows an organ to recieve blood from more then one arterial source or drain
blood into more then one vein. Correct answer-v...
BIO 169 Exam 1; Questions & Answers 100%
Correct
Which of the following are important sources of resistance to blood flow? Correct
answer-All of the Above
A _________ allows an organ to recieve blood from more then one arterial source or drain
blood into more then one vein. Correct answer-vascular anastomoses
Arteries can be best defined as Correct answer-vessels that carry blood away from the
heart.
A decrease in hematocrit will result in a decrease in ____________ resulting in a decrease in
blood pressure. Correct answer-blood viscosity
The systolic pressure Correct answer-all of the above
Unlike most organs when an area of the lungs has a low oxygen content, perhaps because of
disease or damage to the tissue, the blood vessels in that area Correct answer-undergo
vasoconstriction so less blood will reach those tissues.
Vasodilation Correct answer-is an increase in the diameter of a blood vessel.
Which of the following is a correct statement concerning continuous capillaries? Correct
answer-constitute the blood-brain barrier
, BIO 169 Exam 1; Questions & Answers 100%
Correct
What is the relationship between the velocity blood flows through vessels and the cross-
sectional area of the vessels? Correct answer-The higher the cross sectional area the
slower the blood flows, like in capillaries.
Which blood vessel is made of only one tissue layer, the tunica interna? Correct answer-
capillaries
Which of the following can result if renin is released by the kidneys? Correct answer-All
of the above resulting in a raise in blood pressure
Which of the following is a true statement concerning the impact of alcohol on the body?
Correct answer-Alcohol inhibits ADH release causing vasodilation resulting in a flushed
appearance
Which of the following factors would not increase resistance? Correct answer-An
increase in the diameter of the blood vessel.
Which of the following hormones is produced by the heart and causes blood pressure to
decline? Correct answer-atrial natriuretic peptide
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