KINS 4630 Final questions well
answered graded A+
vagal withdrawal...
a) does not change heart rate
b) is not a thing
c)increases heart rate
d) reduces heart rate - correct answer ✔✔c
As exercise intensity increases above lactate threshold, __________ is increasingly being used in
the working muscle - correct answer ✔✔carbohydrate
Blood flow control to target tissue occurs primarily at which type of blood vessel - correct
answer ✔✔arterioles
T/F: The lactate threshold is a fixed parameter and cannot be changed - correct answer ✔✔false
Which of the following is the most important factor for determining the resistance to blood
flow?
a) blood vessel radius
,b) blood pressure
c) blood vessel length
d) blood viscosity - correct answer ✔✔a
In a heart transplant patient, which of the following mechanisms would not be available to
contribute to blood flow during exercise?
a) endothelial control
b) sympathetic nervous system-mediated control
c) myogenic control
d) metabolic control - correct answer ✔✔b
Two men have the same VO2max value of 40 mL/kg/min. Are these individuals equally fit? -
correct answer ✔✔Yes, their VO2max is the same so they are roughly equal in aerobic capacity
Which of the following pathological conditions would result in ineffective skeletal muscle
glucose uptake during exercise?
a) inability to stimulate glut4 receptor expression on muscle
b) inability to activate beta adrenergic receptors on adipose tissue
,c) inability to secrete insulin
d) inability to secrete glucagon - correct answer ✔✔a
Secretion of nitric oxide occurs with - correct answer ✔✔endothelial control of blood flow
Which of the following typically provides the greatest contribution to an individuals total daily
energy expenditure?
a)Thermic effect of feeding
b) physical activity
c) resting metabolic rate - correct answer ✔✔c
Contractile activity of the limbs helps increase venous return by activating - correct answer
✔✔the muscle pump
T/F: The lactate threshold and ventilatory threshold have the same underlying mechanism -
correct answer ✔✔false
Central fatigue most specifically refers to - correct answer ✔✔loss of motivation and lack of
drive to continue during prolonged exercise
Cardiovascular drift during exercise refers to the - correct answer ✔✔progressive increase in
heart rate during exercise in the heat
, During exercise, which vascular bed is subjected to the greatest change in blood flow? - correct
answer ✔✔muscle
The anaerobic component of steady state exercise can be approximated by - correct answer
✔✔the oxygen deficit
Which of the following will increase stroke volume?
a)increased venous return
b)reduced contractility
c)increased heart rate
d)increased afterload - correct answer ✔✔a, increased venous return and ventricular filling
Blood flow in the brain _______ during exercise because of _________ control of blood flow. -
correct answer ✔✔remains constant, myogenic
Which of the following is NOT a determinant of the maximal oxygen uptake?
a) maximal lactate clearance
b) maximal arteriovenous (a-VO2) difference
c) maximal heart rate
answered graded A+
vagal withdrawal...
a) does not change heart rate
b) is not a thing
c)increases heart rate
d) reduces heart rate - correct answer ✔✔c
As exercise intensity increases above lactate threshold, __________ is increasingly being used in
the working muscle - correct answer ✔✔carbohydrate
Blood flow control to target tissue occurs primarily at which type of blood vessel - correct
answer ✔✔arterioles
T/F: The lactate threshold is a fixed parameter and cannot be changed - correct answer ✔✔false
Which of the following is the most important factor for determining the resistance to blood
flow?
a) blood vessel radius
,b) blood pressure
c) blood vessel length
d) blood viscosity - correct answer ✔✔a
In a heart transplant patient, which of the following mechanisms would not be available to
contribute to blood flow during exercise?
a) endothelial control
b) sympathetic nervous system-mediated control
c) myogenic control
d) metabolic control - correct answer ✔✔b
Two men have the same VO2max value of 40 mL/kg/min. Are these individuals equally fit? -
correct answer ✔✔Yes, their VO2max is the same so they are roughly equal in aerobic capacity
Which of the following pathological conditions would result in ineffective skeletal muscle
glucose uptake during exercise?
a) inability to stimulate glut4 receptor expression on muscle
b) inability to activate beta adrenergic receptors on adipose tissue
,c) inability to secrete insulin
d) inability to secrete glucagon - correct answer ✔✔a
Secretion of nitric oxide occurs with - correct answer ✔✔endothelial control of blood flow
Which of the following typically provides the greatest contribution to an individuals total daily
energy expenditure?
a)Thermic effect of feeding
b) physical activity
c) resting metabolic rate - correct answer ✔✔c
Contractile activity of the limbs helps increase venous return by activating - correct answer
✔✔the muscle pump
T/F: The lactate threshold and ventilatory threshold have the same underlying mechanism -
correct answer ✔✔false
Central fatigue most specifically refers to - correct answer ✔✔loss of motivation and lack of
drive to continue during prolonged exercise
Cardiovascular drift during exercise refers to the - correct answer ✔✔progressive increase in
heart rate during exercise in the heat
, During exercise, which vascular bed is subjected to the greatest change in blood flow? - correct
answer ✔✔muscle
The anaerobic component of steady state exercise can be approximated by - correct answer
✔✔the oxygen deficit
Which of the following will increase stroke volume?
a)increased venous return
b)reduced contractility
c)increased heart rate
d)increased afterload - correct answer ✔✔a, increased venous return and ventricular filling
Blood flow in the brain _______ during exercise because of _________ control of blood flow. -
correct answer ✔✔remains constant, myogenic
Which of the following is NOT a determinant of the maximal oxygen uptake?
a) maximal lactate clearance
b) maximal arteriovenous (a-VO2) difference
c) maximal heart rate
