B5 Flashcards
1
Q
Homeostasis definition
A
Regulation of a stable internal environment
2
Q
Ways the body keeps functioning properly
A
- blood glucose levels
- water levels
- temperature
3
Q
Negative feedback mechanism (steps)
A
1. detecting change (receptors) 2. information processing (coordination centre) 3. response (effector)
4
Q
Organs in homeostasis (functions) The brain The CNS The pancreas Effectors/muscles Glands
A
brain= control centre cns= sending signals pancreas= insulin effectors= moving glands= production of hormones
5
Q
CNS
Made up of?
A
Brain
Spinal cord
6
Q
When you touch something hot what reacts?
A
reflexes
7
Q
What is a stimulus?
A
A change in the environment
8
Q
What is a receptor cell?
A
A receptor cell detects changes in the environment
9
Q
What happens at the coordination centre?
A
Information is received and processed. It then sends instructions to effector
10
Q
Examples of the coordination centre organs?
A
Brain/spinal cord/ pancreas
11
Q
What do effectors do?
A
They carry out a response and restore optimum level
12
Q
Two types of effectors
A
Muscles and glands
13
Q
Order of the automatic control system
A
Stimulus > receptor cells > co-ordination centre > effector
