Homeostatic Regulation
Name:
Date:
Period:
Is each scenario an example of POSITIVE feedback or NEGATIVE feedback? Explain your answer. (10 points each)
1. A pregnant woman is close to her due date! She begins to feel slight cramping around 9pm, but decides to go to bed.
She is woken up by more intense and more frequent cramping around 11pm. Turns out she is in labor!
Are the increasingly worse cramps an example of positive or negative feedback?
2. Jason is at soccer practice, and a heat wave just hit.
He has to change his shirt twice during the practice because he is sweating perfusely.
Is Jason's sweat an example of positive or negative feedback?
3. Shannon forgot to eat breakfast, and she is feeling light headed by second period.
Her teacher gives her a granola bar to raise her blood sugar levels. A few minutes after Shannon ate her snack,
she started to feel better. Was the change in blood sugar levels an example of positive or negative feedback?
Label each of the blank boxes using the word bank provided. (5 points each)
Word Bank:
Change
Response
Output
Input
Effector
Control Center
Variable (Homeostasis)
Receptor
Stimulus
Using your resources, draw/ explain/ annotate
your own example of a positive or negative
feedback loop! (25 points)
Hint: make sure you have all of the components
included from the word bank from the previous activity!