Unit 3: Homeostasis and Feedback Loop

Question 1

What is Homeostasis?

Answer 1

the maintenance of relatively stable internal conditions

Question 2

what the equilibrium?

Answer 2

maintenance of relatively stable internal conditions

Question 3

What is a feedback loop?

Answer 3

When a variable deviates from its normal range, homeostasis will restore this through this process

Question 4

What is the three parts of a feedback loop?

Answer 4

Receptor, Control Center, and Effector

Question 5

what is the receptor?

Answer 5

a sensor that detects changes in the environment and notifies control center.

Question 6

what is the control center?

Answer 6

reads receptor signal, determines response needed and activates response

Question 7

What is the effector?

Answer 7

causes a change to return variable to equilibrium and restore homeostasis.

Question 8

Example of stimulus?

Answer 8

body temp exceeds

Question 9

example of receptor?

Answer 9

nerve cells in skin and brain

Question 10

example of control?

Answer 10

temperature regulatory center in brain, or spinal cord

Question 11

effector example?

Answer 11

sweat glands throughout body, muscles too

Question 12

what is negative feedback loop?

Answer 12

type of loop will reduce or shut off the original stimulus

Question 13

what is a positive feedback loop?

Answer 13

type of loop enhances or exaggerates the original stimulus