Homeostasis and Heart Rate

Based on research, physical activity affects the heart rate because to maintain homeostasis during increased physical activity, the heart needs to...

Read the experimental information in the picture to the left (Click on the picture to make it bigger) .... Then answer the question at the end.

• The water concentration in the blood increases

• Body cells require increased oxygen to be pumped around the body as energy is needed & used.

• An increase in muscle activity causes increased in glucose levels in red blood cells

What happens to your heart rate when you exercise?

• 
• 
• It stays the same

Tags

NGSS.MS-PS3-5

What is the essential question for Unit 4?

• How is the complex human body able to function like a machine to exercise?

• How is the complex human body able to function like a robot to pump blood?

• How is the complex human body able to function like a machine to maintain homeostasis and keep us healthy?

• How is the complex human body able to function like an animal live a happy life?

Tags

NGSS.MS-LS1-3

NGSS.MS-LS1-7

How did your heart rate change after exercising? Answer the following questions based on your data. (Required: YUMMY with data).

Where would the dependent variable be labeled on the graph?

Tags

NGSS.MS-PS3-1

During a soccer match, Aiden notices that his body temperature rises due to the intense physical activity. His body responds by sweating, which helps to cool him down. Which is demonstrated in this situation?

• excretion

• metabolism

• homeostasis 

• synthesis

Which of the following best describes the role of the heart in maintaining homeostasis during physical activity?

• A) The heart decreases its rate to conserve energy.

• B) The heart increases its rate to supply more oxygen to muscles.

• C) The heart rate remains constant to maintain a steady state.

• D) The heart stops temporarily to reset its rhythm.

What physiological process is primarily responsible for regulating heart rate in response to changes in body temperature?

• A) Digestion

• B) Respiration

• C) Thermoregulation

• D) Excretion

During an experiment, a student measures their heart rate before and after running. What is the expected trend in heart rate and why?

• A) Decrease, because the body needs less oxygen.

• B) Increase, to deliver more oxygen to muscles.

• C) No change, as heart rate is independent of activity.

• D) Fluctuate randomly, due to external factors.

Tags

NGSS.HS-LS1-3