Homeostasis

Which is NOT a characteristic/example of positive feedback?

• Enhances the stimuli

• Body temperature, Blood pressure

• Labor contractions

If the environment gets cold, we will often shiver in order to:

• keep body temperature the same as the external temperature
• decrease body temperature
• increase body temperature
• regulate blood pressure

Homeostasis

• allows for a wildly fluctuating internal environment

• is impossible in vertebrates

• is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation

When you are cold, you shiver and your blood vessels contract, which warms you up. When you are hot, you sweat and your blood vessels expand, which cools you down.  

• Positive Feedback Response
• Negative Feedback Loop 

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

• STABLE
• EQUAL
• COMPLETE
• CORRECT

Tags

CCSS.RI.11-12.4

CCSS.RI.9-10.4

CCSS.RL.11-12.4

CCSS.RL.8.4

CCSS.RL.9-10.4

Most bacteria that cause sickness in humans grow best at 98.6^oF. Sometimes a fever is the body's response to the bacteria. What is the reason for developing a fever?

• To lower the temperature of the body to kill the bacteria
• The increase the temperature of the body to kill the bacteria
• To allow the bacteria to take over
• To make you feel miserable

What might happen if you didn't run a fever when you got sick?

• You would recover much more quickly

• Your body temperature would drop to dangerous levels

• Your immune system would shut down

• Your body wouldn't fight off the infection as efficiently as it could

The two types of feedback systems that help organisms maintain homeostasis are:

• positive and negative 
• receptor and effector
• static and dynamic
• minor and major

What is an example of a positive feedback mechanism?

• 
• 

Maintaining body temperature is an example of a:

• negative feedback loop
• positive feedback loop