Flashcard on Body's Reaction to Physical Activity

Front

What happens to the heart rate when participating in physical activity?

Back

It beats faster and more strongly.

Front

How many times per minute does a person breathe at rest?

Back

12 times

Front

What is the approximate amount of oxygen taken in per breath at rest?

Back

Half a litre

Front

What is the talk test used to measure?

Back

Intensity of physical activity

Front

What perceived exertion rating suggests moderate intensity?

Back

12 to 14

Front

What happens to breathing rate during exercise?

Back

It increases significantly.

Front

What is the heart described as in the text?

Back

A hollow sack of cardiac muscle

Front

What is the perceived exertion scale range?

Back

6 to 20

Front

What happens to blood flow during physical activity?

Back

It is directed from other organs to the muscles.

Front

What is the main reason for increased heart rate during exercise?

Back

To increase blood flow to muscles