Homeostasis: Positive and Negative Feedback Loops

What is the purpose of sweating?

• To release water from the body

• To increase body temperature

• To bring the body temperature back to normal

Tags

NGSS.HS-LS1-3

How does your body generate heat?

• Shivering 

• Sweating

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NGSS.HS-LS1-3

Negative feedback brings the body back to the 

• variable 

• set point

Tags

NGSS.HS-LS1-3

Negative Feedback loops occur when the body tries to ________ a condition it is experiencing 

• amplify

• reverse

Tags

NGSS.HS-LS1-3

What organ releases insulin? 

• gall bladder

• liver 

• pancreas 

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NGSS.HS-LS1-3

What organ gets activated by glucagon to release glucose into the blood? 

• spleen 

• liver 

• pancreas

Tags

NGSS.HS-LS1-3

Insulin and glucagon are used to:

• continually put glucose into cells

• keep blood glucose levels in an ideal range

• continually take glucose out of cells

Tags

NGSS.HS-LS1-3

How is the birth of a baby/labor a positive feedback loop?

• The hormones that cause contractions and pressure decrease during labor 

• Throughout labor, the hormones that cause contractions continue to increase until the baby is delivered. 

• During labor, the hormones that cause contractions fluctuate up and down.

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NGSS.HS-LS1-3

Positive feedback

• Bring the change back to normal

• Brings the change further away from the normal state

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NGSS.HS-ESS2-2

It is important for glucose to be able to enter into the cells from the bloodstream. What is the glucose used for when inside the cells? 

• photosynthesis to make energy for the plant 

• cellular respiration to make proteins for the body

• digestion of carbohydrates 

• cellular respiration to make the energy molecule called ATP 

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NGSS.HS-LS1-7