Lecture 3 Flashcards
1
Q
Homeostasis
A
Maintenance of a relatively constant internal environment by an organism, or even a single cell
2
Q
Disease
A
Abnormality in body’s normal processes that significantly impairs homeostasis
3
Q
Sensor/Receptor
A
Detects change in internal conditions
4
Q
Control Center
A
Directs the response to bring conditions back to normal
5
Q
Effector
A
Organ/tissue that receives info from control center and acts to bring about changes to maintain homeostasis
6
Q
2 types of homeostatic mechanisms
A
Negative and Positive feedbacj
7
Q
Negative feedback
A
Keeps a variable as close as it can to certain value (AC, Blood Sugar Regulation)
8
Q
Positive Feedback
A
Brings about rapid change in same direction as stimulus (blood clotting, birth)
