BIO 169 Exam 1 |Questions And Answers With Expert Verified Solutions |
Latest 2024/2025
Which of the following are important sources of resistance to blood flow? - ✔✔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. - ✔✔vascular anastomoses
Arteries can be best defined as - ✔✔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. - ✔✔blood viscosity
The systolic pressure - ✔✔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 -
✔✔undergo vasoconstriction so less blood will reach those tissues.
Vasodilation - ✔✔is an increase in the diameter of a blood vessel.
Which of the following is a correct statement concerning continuous capillaries? -
✔✔constitute the blood-brain barrier
, What is the relationship between the velocity blood flows through vessels and the
cross-sectional area of the vessels? - ✔✔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? -
✔✔capillaries
Which of the following can result if renin is released by the kidneys? - ✔✔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? - ✔✔Alcohol inhibits ADH release causing vasodilation resulting in a
flushed appearance
Which of the following factors would not increase resistance? - ✔✔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? - ✔✔atrial natriuretic peptide
Which of the following is a correct statement concerning blood flow to the
capillaries? - ✔✔precapillary sphincters are composed of smooth muscle,
relaxation of this sphincter allows blood to enter the capillary bed
Which of the cardiovascular system's circuits has deoxygenated blood in its
arteries? - ✔✔pulmonary circuit
Latest 2024/2025
Which of the following are important sources of resistance to blood flow? - ✔✔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. - ✔✔vascular anastomoses
Arteries can be best defined as - ✔✔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. - ✔✔blood viscosity
The systolic pressure - ✔✔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 -
✔✔undergo vasoconstriction so less blood will reach those tissues.
Vasodilation - ✔✔is an increase in the diameter of a blood vessel.
Which of the following is a correct statement concerning continuous capillaries? -
✔✔constitute the blood-brain barrier
, What is the relationship between the velocity blood flows through vessels and the
cross-sectional area of the vessels? - ✔✔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? -
✔✔capillaries
Which of the following can result if renin is released by the kidneys? - ✔✔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? - ✔✔Alcohol inhibits ADH release causing vasodilation resulting in a
flushed appearance
Which of the following factors would not increase resistance? - ✔✔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? - ✔✔atrial natriuretic peptide
Which of the following is a correct statement concerning blood flow to the
capillaries? - ✔✔precapillary sphincters are composed of smooth muscle,
relaxation of this sphincter allows blood to enter the capillary bed
Which of the cardiovascular system's circuits has deoxygenated blood in its
arteries? - ✔✔pulmonary circuit
