Homeostasis Flashcards
(5 cards)
1
Q
WHAT
A
Maintenance of relatively constant internal environment, despite fluctuations in external environment
2
Q
Stimulus response pathway
A
Stimulus - Change in internal environment
Receptor - Structure in organism that detects stimulus, sending a message to control centre
Control Centre - Processes info
(Brain voluntary)
(or spinal cord involuntary (reflexes)
Effector - Something that causes change to organism
Response - The last thing the body does to restore homeostasis
3
Q
Organism respond how
A
Through 5 senses
4
Q
Negative feedback
A
The response counteracts the original stimulus that regulates homeostasis
Insulin
5
Q
Positive feedback
A
Response enhances original stimulus systems
Childbirth
