Exercise Physiology - Short term effects - Vasomotor Flashcards
What is the primary short-term effect of exercise on the vascular system?
Increased blood flow to the working muscles.
True or False: Exercise causes blood vessels to constrict.
False.
Fill in the blank: During exercise, the heart rate __________.
increases.
What happens to the blood pressure during intense exercise?
Blood pressure increases.
Multiple choice: Which of the following is NOT a short-term effect of exercise on the vascular system? A) Increased blood flow B) Decreased heart rate C) Increased stroke volume D) Vasodilation
B) Decreased heart rate.
What is ‘vasodilation’?
The widening of blood vessels to increase blood flow.
How does exercise affect capillary density in the short term?
Capillary recruitment increases, improving oxygen delivery.
True or False: Short-term exercise can lead to a temporary increase in plasma volume.
True.
What is the role of nitric oxide during exercise?
It promotes vasodilation and increased blood flow.
Fill in the blank: The __________ system is responsible for transporting blood throughout the body.
vascular.
Multiple choice: Which of the following contributes to the increase in stroke volume during exercise? A) Increased heart rate B) Increased venous return C) Decreased blood viscosity D) Decreased myocardial contractility
B) Increased venous return.
What effect does exercise have on the distribution of blood flow?
Blood flow is redirected to active muscles and away from inactive organs.
True or False: Blood flow to the skin decreases during exercise.
False.
What physiological mechanism helps regulate blood flow during exercise?
Autoregulation and neural control.
Fill in the blank: The __________ response refers to the body’s immediate adjustments to maintain blood flow during exercise.
cardiovascular.
Multiple choice: Which hormone is released during exercise that aids in blood flow regulation? A) Insulin B) Adrenaline C) Cortisol D) Thyroxine
B) Adrenaline.
What happens to the arteries during exercise?
They expand to accommodate increased blood flow.
True or False: Short-term exercise can lead to a decrease in heart rate variability.
False.
What is the short-term effect of exercise on oxygen delivery to muscles?
Oxygen delivery increases due to enhanced blood flow.
Fill in the blank: The __________ system adapts to the demands of physical activity by increasing blood flow.
vascular.
Multiple choice: What is the effect of exercise on blood viscosity? A) Increases B) Decreases C) No change D) Depends on hydration status
B) Decreases.
How does exercise influence the release of lactic acid?
Increased exercise intensity leads to higher lactic acid production in muscles.
True or False: The vascular response to exercise is immediate and can be observed within seconds.
True.
What is the significance of increased blood flow during exercise?
It enhances nutrient delivery and waste removal from active tissues.
Fill in the blank: The __________ effect helps in regulating blood pressure during exercise.
baroreceptor.
Multiple choice: Which factor primarily drives increased blood flow to muscles during exercise? A) Increased oxygen demand B) Decreased carbon dioxide levels C) Lower body temperature D) Increased blood viscosity
A) Increased oxygen demand.
What role do chemoreceptors play in the vascular response to exercise?
They detect changes in chemical composition of blood and help regulate blood flow.
