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28 Sep 2019
Question 6 (1 point)Save Question 6Save
When end-diastolic volume is increased, the force of the myocardialcontraction is increased. This is due to _________?
a shift in the operating point of the myocardial length-tensioncurve
an increased release of calcium
stretch-induced parasympathetic activity
a decreased afterload in the arteries
Question 7 (1 point)Save Question 7Save
Match the vessel characteristic on the left with the appropriatevessel type on the right (each vessel type will be used more thanonce, only 1 BEST answer for each characteristic).
Substance exchange with the tissues takes place in thesevessels
These vessels are the main site of vascular resistance
Active hyperemia directly affects the diameter of thesevessels
Very low resistance vessels that act as a pressure-reservoir due totheir elasticity
These vessels contain one-way valves throughout their length
The walls of these vessels are composed of a single layer ofendothelial cells and a thin basement membrane
Very low resistance vessels that serve as a volume reservoir due totheir compliance
The velocity of blood flow is the least in these vessels
These vessels carry blood back to the heart
Blood flow in these vessels is directly aided by the skeletalmuscle pump
The total cross-sectional area of this type of vessel(cross-sectional area of all these vessels combined) exceeds thetotal cross-sectional area of every other type of bloodvessel
These are the first vessels that carry blood away from theheart
1.
Arteries
2.
Arterioles
3.
Capillaries
4.
Veins
Question 8 (1 point)Save Question 8Save
Which of the following selections correctly completes thestatements: The primary mechanism via which gasses (oxygen andcarbon dioxide), ions, and nutrients are exchanged between thecapillaries and the tissue is ______.
Diffusion
Active transport
Bulk flow
More than one of the above is correct.
Question 9 (1 point)Save Question 9Save
Which of the following changes will favor an increase in absorptionat the capillaries?
An increase in plasma osmolarity.
An increase in interstitial fluid osmolarity.
An increase in capillary fluid hydrostatic pressure.
A decrease in interstitial fluid hyrdrostatic pressure.
More than one of the above selections is correct.
Question 10 (1 point)Save Question 10Save
Correct order the following events that would occur due to a dropin MAP.
Sympathetic activation increases and parasympathetic activationdecreases
Heart rate, stroke volume, cardiac output, and total peripheralresistance increase.
MAP rises.
Baroreceptor firing decreases
Question 6 (1 point)Save Question 6Save
When end-diastolic volume is increased, the force of the myocardialcontraction is increased. This is due to _________?
a shift in the operating point of the myocardial length-tensioncurve
an increased release of calcium
stretch-induced parasympathetic activity
a decreased afterload in the arteries
Question 7 (1 point)Save Question 7Save
Match the vessel characteristic on the left with the appropriatevessel type on the right (each vessel type will be used more thanonce, only 1 BEST answer for each characteristic).
Substance exchange with the tissues takes place in thesevessels
These vessels are the main site of vascular resistance
Active hyperemia directly affects the diameter of thesevessels
Very low resistance vessels that act as a pressure-reservoir due totheir elasticity
These vessels contain one-way valves throughout their length
The walls of these vessels are composed of a single layer ofendothelial cells and a thin basement membrane
Very low resistance vessels that serve as a volume reservoir due totheir compliance
The velocity of blood flow is the least in these vessels
These vessels carry blood back to the heart
Blood flow in these vessels is directly aided by the skeletalmuscle pump
The total cross-sectional area of this type of vessel(cross-sectional area of all these vessels combined) exceeds thetotal cross-sectional area of every other type of bloodvessel
These are the first vessels that carry blood away from theheart
1.
Arteries
2.
Arterioles
3.
Capillaries
4.
Veins
Question 8 (1 point)Save Question 8Save
Which of the following selections correctly completes thestatements: The primary mechanism via which gasses (oxygen andcarbon dioxide), ions, and nutrients are exchanged between thecapillaries and the tissue is ______.
Diffusion
Active transport
Bulk flow
More than one of the above is correct.
Question 9 (1 point)Save Question 9Save
Which of the following changes will favor an increase in absorptionat the capillaries?
An increase in plasma osmolarity.
An increase in interstitial fluid osmolarity.
An increase in capillary fluid hydrostatic pressure.
A decrease in interstitial fluid hyrdrostatic pressure.
More than one of the above selections is correct.
Question 10 (1 point)Save Question 10Save
Correct order the following events that would occur due to a dropin MAP.
Sympathetic activation increases and parasympathetic activationdecreases
Heart rate, stroke volume, cardiac output, and total peripheralresistance increase.
MAP rises.
Baroreceptor firing decreases
When end-diastolic volume is increased, the force of the myocardialcontraction is increased. This is due to _________?
a shift in the operating point of the myocardial length-tensioncurve
an increased release of calcium
stretch-induced parasympathetic activity
a decreased afterload in the arteries
Question 7 (1 point)Save Question 7Save
Match the vessel characteristic on the left with the appropriatevessel type on the right (each vessel type will be used more thanonce, only 1 BEST answer for each characteristic).
Substance exchange with the tissues takes place in thesevessels
These vessels are the main site of vascular resistance
Active hyperemia directly affects the diameter of thesevessels
Very low resistance vessels that act as a pressure-reservoir due totheir elasticity
These vessels contain one-way valves throughout their length
The walls of these vessels are composed of a single layer ofendothelial cells and a thin basement membrane
Very low resistance vessels that serve as a volume reservoir due totheir compliance
The velocity of blood flow is the least in these vessels
These vessels carry blood back to the heart
Blood flow in these vessels is directly aided by the skeletalmuscle pump
The total cross-sectional area of this type of vessel(cross-sectional area of all these vessels combined) exceeds thetotal cross-sectional area of every other type of bloodvessel
These are the first vessels that carry blood away from theheart
1.
Arteries
2.
Arterioles
3.
Capillaries
4.
Veins
Question 8 (1 point)Save Question 8Save
Which of the following selections correctly completes thestatements: The primary mechanism via which gasses (oxygen andcarbon dioxide), ions, and nutrients are exchanged between thecapillaries and the tissue is ______.
Diffusion
Active transport
Bulk flow
More than one of the above is correct.
Question 9 (1 point)Save Question 9Save
Which of the following changes will favor an increase in absorptionat the capillaries?
An increase in plasma osmolarity.
An increase in interstitial fluid osmolarity.
An increase in capillary fluid hydrostatic pressure.
A decrease in interstitial fluid hyrdrostatic pressure.
More than one of the above selections is correct.
Question 10 (1 point)Save Question 10Save
Correct order the following events that would occur due to a dropin MAP.
Sympathetic activation increases and parasympathetic activationdecreases
Heart rate, stroke volume, cardiac output, and total peripheralresistance increase.
MAP rises.
Baroreceptor firing decreases
lalithashwin156Lv10
6 May 2023
Keith LeannonLv2
28 Sep 2019
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