Thursday March 5, 2015

Learning Target: I can explore ways in which the human body self-regulates to maintain homeostasis

Names: ________________, ________________       Date: ____________________  Class: ___________________

Human Tests

1. Exercise: With a partner, conduct the follows tests. You may need your partner to help you count your heart beats and your breaths.

Heart Beats (Heart Rate) *Use your radial artery, the one found in your wrist.

At rest:

1.     Count your heartbeats for 30 seconds.                           

2.     Record.

	At Rest	Exercise
Heartbeats (Heart rate)

3.     Repeat for your partner

Exercise:

1.     Jog in place for 2 minutes

2.     Count your heartbeats for 30 seconds

3.     Record

4.     Repeat for your partner.

Respiration (Breathing)

At rest:

	At Rest	Exercise
Respiratory Rate (Breathing)

1.     Count your breaths for 30 seconds (you may need your partner to do this)

2.     Record

3.     Repeat for your partner

Exercise:

1.     Jog in place for 2 minutes

2.     Count your breaths for 30 seconds

3.     Record

4.     Repeat for your partner

2. Create a graph of your results

3. Answer the questions

1.     What controls human heart rates?

2.     Under what conditions can heart rates change?

3.     How is your breathing (respiration) controlled?

4.     Can you hold your breath forever? What would happen?

5.     In what different ways does the body control its temperature?

Sweating and Fever: With a partner or by yourself, conduct the following tests, and answer the questions.

1.      Blow on your arm. How does your skin feel?

2.      Place a few drops of water on your arm, and rub it just a little bit. Blow on your arm.

3.      Does your skin feel any different than when you blew on it without the water? Why?

4.      How does this activity relate to sweat and body temperature?