Homeostasis Review

The "cause" for something to happen is the

• response
• effect
• stimulus
• homeostasis

What is the stimulus in the blood clotting model?

• Clotting occurs from platelets

• Break or tear in blood vessel wall

• Clotting proceeds until break is sealed by clot

• Released chemicals attract more platelets.

What is the response in the blood clotting model?

• Clotting occurs from platelets

• Break or tear in blood vessel wall

• Clotting proceeds until break is sealed by clot

• Released chemicals attract more platelets.

What type of feedback is shown in the blood clotting model?

• Positive

• Negative

When you are hungry, you eat.

What is the response?

• hunger

• eating

• stomach

• nerves

Homeostasis

• allows for a wildly fluctuating internal environment
• is impossible in vertebrates
• is the maintenance of a relatively stable internal environment

• is the maintenance of a relatively stable external environment

Homeostasis in the human body is often maintained by a: 

• the brain only

• solar feedback loop
• the muscles

• negative feedback loop

Your body is too hot. What senses your body temperature?

• nerve cells

• sweat cells

• blood cells

• muscle cells

With low oxygen levels, your breathing rate will increase. When your oxygen levels rise, what is the appropriate response?

• stop breathing

• increase heart rate

• keep breathing rate high

• return breathing rate to baseline

When you exercise, what gas does your body NEED more of?

• Blood

• Carbon dioxide

• Hydrogen

• Oxygen