Unit 4: Homeostasis

Question 1

Homeostasis

Answer 1

The process of keeping conditions at a set point where an organism can survive.

Question 2

Stimulus

Answer 2

Anything that causes an imbalance in the internal conditions of an organism.

Question 3

Receptor/Sensor

Answer 3

A protein that detects a stimulus and sends a message to the control center.

Question 4

Control Center

Answer 4

Receives info from the sensors, compares info to ideal values, and sends a message to the effectors.

Question 5

Effector

Answer 5

Any organ/tissue/cell that changes in response to a message sent by the control center. To return to the set point.

Question 6

Negative Feedback Loop

Answer 6

A negative feedback loop increases or decreases conditions maintain homeostasis. Works opposite the stimulus (too much of something? Reduce it)

Question 7

Positive Feedback Loop

Answer 7

A positive feedback loop increases or decreases conditions away from the set point. (NOT maintaining homeostasis)