Tissues, Organs, and Homeostasis (basics)

Question 1

What is homeostasis?

Answer 1

the dynamic constancy of the internal environment

Question 2

Negative Feedback (6 things)

Answer 2

1. ) a change in conditions, or stimulus, occurs in the body
2. ) it is detected by sensors
3. )information is then fed to an integrating center, that compares conditions to a set point
4. ) message is sent to an effector to initiate a response
5. )this response brings internal conditions back to set point
6. ) once at the set point, the sensor no longer detects any change

Question 3

What are antagonistic effectors?

Answer 3

increasing activity of one effector is accomplished by decrease in the other

Question 4

Positive Feedback

Examples.

Answer 4

Response is cumulative; generally part of some larger mechanism that does
ie: blood clotting, contraction of uterus during childbirth

Question 5

What are the 2 major aspects of size?

Answer 5

Surface Area: area coving an object

Volume: space the object takes up

Question 6

If you ______ surface area of an organism, you will_____ its volume

Answer 6

double; triple