biology B3

During Exercise:

• Heart rate Increases
• Rate and depth of breathing Changes
• Arteries Dilate

These changes help to provide oxygen and glucose to muscles and removes carbon dioxide quickly.

• The heart rate can also be altered by hormones such as; adrenaline.
• This hormone makes the heart rate increase, and respond better to danger.

How much does the Heart Rate Change?

• To measure your resting heart rate, your pulse rate is taken, this can be taken by either your neck or wrist.
• Pulse rate is…