Unit 3 PE Acute physiological responses to exercise

HEART RATE is what? Acute physiological response to exercise?

• During exercise, blood flow is redirected away from the spleen, kidneys, guts and inactive muscles so that working muscles receive a greater % of Q.

• The number of times the heart beats in one minute. Increases to a maximum of 220 - age.

• The blood returning to the heart via the inferior and superior vena cava. Increases.

STROKE VOLUME is what? Acute physiological response to exercise?

• The amount of blood ejected by the left ventricle per beat. Increases.

• The amount of blood pumped out of the heart in one minute. Increases.

• The number of times the heart beats in one minute. Increases.

• The blood returning to the heart via the inferior and superior vena cava. Decreases.

CARDIAC OUTPUT is what? Acute physiological response to exercise?

• The number of times the heart beats in one minute. Increases.

• The amount of blood ejected by the left ventricle per beat. Increases.

• The amount of blood pumped out of the heart in one minute. Increases.

• Pressure in the arteries following contraction of ventricles as blood is pumped out of the heart. Increases.

SYSTOLIC BLOOD PRESSURE is what? Acute physiological response to exercise?

• During aerobic exercise, blood volume decreases. Plasma volume decreases rapidly in the first 5 minutes of exercise then stabilises.

• Pressure in the arteries when the heart relaxes and ventricles fill with blood. Stays the same.

• Pressure in the arteries following contraction of ventricles as blood is pumped out of the heart. Increases.

• The number of times the heart beats in one minute. Increases.

DIASTOLIC BLOOD PRESSURE IS...

• Pressure in the arteries following contraction of ventricles as blood is pumped out of the heart. Increases.

• The blood returning to the heart via the inferior and superior vena cava. Increases.

• Pressure in the arteries when the heart relaxes and ventricles fill with blood. Slight increase or may stay the same.

REDISTRIBUTION OF BLOOD FLOW is what? Acute physiological response to exercise?

• During exercise, blood flow is redirected away from the spleen, kidneys, guts and inactive muscles so that working muscles receive a greater % of Q.

• Pressure in the arteries following contraction of ventricles as blood is pumped out of the heart. Increases.

• During aerobic exercise, blood volume decreases. Plasma volume decreases rapidly in the first 5 minutes of exercise then stabilises.

A-VO2 difference is what? Acute physiological response to exercise?

• Volume of oxygen in the arteries. Increases.

• Difference in the level of oxygen in the veins during exercise and at rest. Increases.

• Measure of the difference in the concentration of oxygen in the arterial blood compared to the concentration of oxygen in the venous blood. Increases.

• Measure of the difference in the concentration of oxygen in the arterial blood compared to the concentration of oxygen in the venous blood. Decreases.

VASOCONSTRICTION is what?

• A increase in the diameter of a blood vessel, resulting in a decrease in blood flow to the area supplied by the blood vessel.

• A increase in the diameter of a blood vessel, resulting in a increase in blood flow to the area supplied by the blood vessel.

• A decrease in the diameter of a blood vessel, resulting in a decrease in blood flow to the area supplied by the blood vessel.

• A decrease in the diameter of a blood vessel, resulting in no change in blood flow to the area supplied by the blood vessel.

VASODILATION is what?

• An increase in the diameter of a blood vessel, resulting in a decrease in blood flow to the area supplied by the blood vessel.

• An increase in the diameter of a blood vessel, resulting in a increase in blood flow to the area supplied by the blood vessel.

• A decrease in the diameter of a blood vessel, resulting in a decrease in blood flow to the area supplied by the blood vessel.

• A decrease in the diameter of a blood vessel, resulting in no change in blood flow to the area supplied by the blood vessel.

RESPIRATORY FREQUENCY is what? Acute physiological response to exercise?

• How much air is inspired or expired in one breath. Decreases.

• How much air is breathed in or out in one minute. Decreases.

• The number of breaths taken in one minute. Increases.

• The volume of oxygen that can be taken up and used by the body for energy production. Increases.