Homeostasis and Heart Rate

How much a normal adult heart beats per minute?

• 18

• 47

• 109

• 72

Even though Khing loves to sleep, her heart still beats and lungs still breathe. Which part of her brain controls this?

• cerebellum

• cerebrum

• brain stem

• optical nerve

Involuntary actions, like our heart beating, are controlled by what?

• Diet

• Tendons

• Nervous System

• Skeletal System

How does your nervous system work with your circulatory system?

• Our nervous system makes us breathe.

• Our nervous system makes blood clot.

• Our nervous system controls our heart rate.

• Our nervous system protects our heart.

Which system is responsible for providing the brain with oxygen and removing waste products like carbon dioxide?

• Respiratory

• Digestive

• Circulatory

• Nervous

Your investigation looked at how physical activity affects heart rate. Match the variables and experimental parts to the appropriate answer:

• Heart rate after NO physical activity

• Control Group

• Physical Activity

• Constant

• Heart Rate

• Independent Variable

• Getting heart rate using radial artery.

• Dependent Variable

Did your heart rate return to its resting level after 2 minutes of rest? Why or why not?

(YUMMY = EXPLAIN)

Tags

NGSS.HS-LS1-3

What is homeostasis?

• A) The process of maintaining a stable internal environment in the body.

• B) The increase in heart rate during exercise.

• C) The breakdown of glucose in cells.

• D) The process of breathing.

Tags

NGSS.MS-LS1-3

Which part of the brain is primarily responsible for regulating heart rate?

• A) Cerebrum

• B) Medulla oblongata

• C) Cerebellum

• D) Hypothalamus

Tags

NGSS.HS-LS1-3

How does exercise affect heart rate?

• A) It decreases heart rate.

• B) It has no effect on heart rate.

• C) It increases heart rate.

• D) It stops the heart temporarily.

Tags

NGSS.HS-LS1-3