Unit 3 Review

What is another word that can be used to describe "homeostasis"?

• STABLE
• EQUAL
• COMPLETE
• CORRECT

This diagram shows an example of...

• Blood sugar regulation

• Homeostasis

• Negative feedback

• Positive feedback

Which of the following describes homeostasis?

• keeps variables exactly at the set point

• organism's ability to maintain steady(stable) internal conditions

• acts to keep values outside of a desired range

• operates through positive feedback

During the exercise lab, the student exercising may have started to breathe faster. What were they trying to regulate?

• their oxygen levels

• their blood pressure

• their body temperature

• their heart rate

What part of the negative feedback loop is what happens inside of the organism, as the result of the effector?

• Initiation event

• Response

• Receptor

• Effector

Identify the stimulus event.

Scenario: A person begins to exercise which causes their body temperature to increase. The temperature change is noticed and the person begins to sweat and their body temperature decreases.

• body temperature increases

• person begins to sweat

• temperature change is noticed

• person begins to exercise

Identify the response.

Scenario: A person begins to exercise which causes their body temperature to increase. The temperature change is noticed (sensed) and the person begins to sweat and their body temperature decreases.

• the person begins to sweat

• the person begins to exercise

• change in temperature

• body temperature increases

The "cause" for something to happen is the

• response
• effect
• stimulus
• homeostasis

Homeostasis in the human body is often maintained by a: 

• the brain only

• solar feedback loop
• the muscles

• negative feedback loop

The maintenance of an organism’s internal environment is called:

• compensating
• homeostasis
• balancing
• routine