6.4.1 Principles of homeostasis and negative feedback
Studied by 0 people
Call with Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/7
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No study sessions yet.
8 Terms
Define homeostasis
maintaining a stable internal environment within restricted limits
What are physiological control systems?
contain a receptor, coordinator and effector to maintain the internal environment
Why is it important to maintain a stable core temperature?
temp too low - insufficient kinetic energy for metabolic reactions
temp too high - enzymes denature
Why is it important to maintain a stable blood pH?
at acidic pH, H+ ions interact with tertiary structure
Define negative feedback
counteracting a change to restore a system to its original level
Describe the stages in the negative feedback pathway
receptors detect change
message passed on via coordinator to effector
effector brings about a response
Define positive feedback
increases original change, increasing a system’s deviation from the original level
Why do we have separate negative feedback mechanisms?
greater degree of control
Note 
Flashcards (98)