Bios 255 Midterm Finals
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Bios 255 Midterm Finals
- Which of the typical blood vessels has a thin tunica tunica media dominated by collagen
fibers?
Answer: veins
- Capillaries surrounding the choroid plexus is of which type?
Answer: Fenestrated capillaries
- Blood flow through a capillary bed is passed by what structure?
Answer:
Atriovenous Anastomosis
- Blood flows toward the heart in the veins by?
Answer:
-With the aid of contractions of the adjacent skeletal muscles.-Valves in the veins prevent the backflow of the blood -Pressure at the venules is higher than the pressure at the venae cava
- As the blood flows from venules toward the heart, what increases?
Answer: Resistance
- Blood volume is decreased by what two hormones?
Answer: ANP & BNP
- Which of the following is not a vasoconstrictor?
-Prostagladin -Thromboxones -Nitric Oxide
Answer: Nitric Oxide
- Vasodilation is achieved by adrenergic receptors. True or False
Answer: False
- Baroreceptors are found in what sinus?
Answer: Carotid Sinuses
- Which of the typical blood vessels has thick tunica media dominated by smooth muscle
cells and elastic fibers?
Answer: Arteries
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