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BIOS 255 MIDTERM/FINALS QUESTIONS AND ANSWERS WITH VERIFIED SOLUTIONS 2024
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BIOS 255 MIDTERM/FINALS QUESTIONS AND ANSWERS WITH VERIFIED SOLUTIONS 2024
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BIOS 255 MIDTERM/FINALS QUESTIONSAND ANSWERS WITH VERIFIED
SOLUTIONS 2024
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
Femoral artery is a type of what artery? - ANSWER Muscular Artery
Capillaries that have a complete lining are called what? - ANSWER Continuous Capillaries
Blood flow through a capillary is regulated by what? - ANSWER Precapillary Sphincter
As the blood flows from the aorta towards the cappilaries what increases? - ANSWER Resistance
Pressure gradient of water causes osmosis. True or False - ANSWER False
Which of the following is NOT a vasodilator? - ANSWER Prostagladin
Venous reserve is used during extreme blood loss. True or False - ANSWER True
Chemoreceptors are found in what? - ANSWER Aortic Bodies
Venous valves allow blood to flow in BOTH directs. True or False. - ANSWER False
The normal heart sounds are caused by what? - ANSWER The closure of the heart valves
The left ventricular wall of the heart is much thicker than the right wall in order to do what? - ANSWER
Pump blood against a greater pressure
Ventricular depolarization corresponds to what complex? - ANSWER QRS Complex
Blood within the pulmonary veins returns to the heart in what location? - ANSWER Left Atrium
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