immediate affects of physical activity

Question 1

what are the immediate effects of physical activity

Answer 1

• increased cardiac output
• increased heart rate
• increased stroke volume
• increased blood pressure
• increased arteriovenous oxygen difference

Question 2

what is increased cardiac output?

Answer 2

• muscles require more fuel and oxygen to produce energy for contraction
• Oxygen and fuel are carried to the muscle by the blood
• Increased cardiac output carries more blood faster

Question 3

what is an increased heart rate?

Answer 3

• To provide a more rapid supply of blood to the muscles
• heart rate increases
• Increase in heart rate is directly proportional to the workload.

Question 4

what is increased stroke volume?

Answer 4

• Stroke volume increases during activity.
• Occurs because more venous blood is being returned to the heart from the muscles
• Increase in the strength of contraction of the heart occurs.
• Heart fills up with more blood and is ejected with greater force.