BIOS 255 Edapt week 3- Practice Questions with Correct Solutions Latest Update 2025 (Fully Solved)
select all that are true of capillaries - Answers - fenestrated capillaries allow for fast filtration and
absorption
- sinusoidal capillaries are found in bone marrow
- continuous capillaries are the most common type
which of the following is true of vasoconstriction - Answers - decrease in blood flow and an increase in
blood pressure
under the microscope, a blood vessel is observed to have a relatively thin wall, a large lumen, is
collapsed, and contains a thick tunica externa. this is probably a(n): - Answers - vein
which of the following is not a mechanism that assists venous return - Answers - an increase in
peripheral resistance
select all that occur during bulk flow across a typical capillary - Answers - reabsorption
- movement of fluids and solutes into the capillary
- filtration
- movement of fluids and solutes out of the capillary
the blood flow to the body organs ____ - Answers - is inversely proportional to the resistance of the
arterioles leading to them
the ____ the radius of a vessel , the greater the resistance - Answers - smaller
as the radius of a vessel increases, the resistance ___ - Answers - decreases
as the resistance decreases, the blood flow _____ - Answers - increases
the _____ the radius of a vessel, the less the resistance - Answers - larger
blood flow to an organ will decrease with ______ - Answers - vasoconstriction
blood flow to an organ will increase with _______ - Answers - vasodilation
a patient's systolic pressure is 130 and diastolic pressure is 90. what is the pulse pressure - Answers - 40
mmHg
capillaries have only a _____ - Answers - tunica intima
continuous capillaries - Answers - vessels that allow only small nutrients through via simple diffusion
, sinusoidal capillaries - Answers - vessels that lack a basement membrane and are typically found in red
bone marrow and liver
fenestrated capillaries - Answers - vessels that are ideal for moving large nutrients to be absorbed and
wastes to be filtered
elastic arteries - Answers - found close to the heart
- largest of the arteries
- tunica media composed of smooth muscle and elastic connective tissue
muscular arteries - Answers - second largest of the arteries
- found far from the heart
- tunica media composed of smooth muscle
which form of membrane movement is ideal for the diffusion of gases - Answers - simple diffusion
which major category of tissues is ideal for lining and covering endothelium - Answers - epithelial tissue
Place the events of the autonomic blood pressure regulation in the correct sequence. - Answers - blood
pressure increase
- blood pressure wall stretches
- baroreceptors in vessels increase firing rates
- sensory input sent to cardiovascular center
- cardioacceleratory center decreases nerve signals along sympathetic pathways
- heart rate and stroke volume decrease
- blood pressure returns to resting levels
select all of the following that could potentially result in an increase in arterial pressure - Answers -
vasoconstriction of arterioles
- increase cardiac rate
- increase in stroke volume
the best estimate of MAP is ____ - Answers - the diastolic pressure plus one-third of the pulse pressure
whenever blood pressure ______ , the cardiovascular center of the brain stem increases ______, nerve
innervation towards the SA node to increase heart rate leading to a return in homeostasis. - Answers -
decreases
select all that are true of capillaries - Answers - fenestrated capillaries allow for fast filtration and
absorption
- sinusoidal capillaries are found in bone marrow
- continuous capillaries are the most common type
which of the following is true of vasoconstriction - Answers - decrease in blood flow and an increase in
blood pressure
under the microscope, a blood vessel is observed to have a relatively thin wall, a large lumen, is
collapsed, and contains a thick tunica externa. this is probably a(n): - Answers - vein
which of the following is not a mechanism that assists venous return - Answers - an increase in
peripheral resistance
select all that occur during bulk flow across a typical capillary - Answers - reabsorption
- movement of fluids and solutes into the capillary
- filtration
- movement of fluids and solutes out of the capillary
the blood flow to the body organs ____ - Answers - is inversely proportional to the resistance of the
arterioles leading to them
the ____ the radius of a vessel , the greater the resistance - Answers - smaller
as the radius of a vessel increases, the resistance ___ - Answers - decreases
as the resistance decreases, the blood flow _____ - Answers - increases
the _____ the radius of a vessel, the less the resistance - Answers - larger
blood flow to an organ will decrease with ______ - Answers - vasoconstriction
blood flow to an organ will increase with _______ - Answers - vasodilation
a patient's systolic pressure is 130 and diastolic pressure is 90. what is the pulse pressure - Answers - 40
mmHg
capillaries have only a _____ - Answers - tunica intima
continuous capillaries - Answers - vessels that allow only small nutrients through via simple diffusion
, sinusoidal capillaries - Answers - vessels that lack a basement membrane and are typically found in red
bone marrow and liver
fenestrated capillaries - Answers - vessels that are ideal for moving large nutrients to be absorbed and
wastes to be filtered
elastic arteries - Answers - found close to the heart
- largest of the arteries
- tunica media composed of smooth muscle and elastic connective tissue
muscular arteries - Answers - second largest of the arteries
- found far from the heart
- tunica media composed of smooth muscle
which form of membrane movement is ideal for the diffusion of gases - Answers - simple diffusion
which major category of tissues is ideal for lining and covering endothelium - Answers - epithelial tissue
Place the events of the autonomic blood pressure regulation in the correct sequence. - Answers - blood
pressure increase
- blood pressure wall stretches
- baroreceptors in vessels increase firing rates
- sensory input sent to cardiovascular center
- cardioacceleratory center decreases nerve signals along sympathetic pathways
- heart rate and stroke volume decrease
- blood pressure returns to resting levels
select all of the following that could potentially result in an increase in arterial pressure - Answers -
vasoconstriction of arterioles
- increase cardiac rate
- increase in stroke volume
the best estimate of MAP is ____ - Answers - the diastolic pressure plus one-third of the pulse pressure
whenever blood pressure ______ , the cardiovascular center of the brain stem increases ______, nerve
innervation towards the SA node to increase heart rate leading to a return in homeostasis. - Answers -
decreases
