Nervous system VS Endocrine system Flashcards
1
Q
What is the response order that both systems follow?
A
- Receptor cells ( detect a change in the environment)
- Coordination centres (process information)
- Effectors (muscles or glands that bring about a response)
2
Q
What is the abbreviation for Central Nervous System?
A
CNS
3
Q
What are the characteristics of the CNS?
A
- Triggers a rapid response
- Uses electrical signals that are carried by neurons
- Response is very short
- Acts on a precise part of the body
4
Q
What is an abbreviation for the Endocrine Control System?
A
ECS
5
Q
What are the characteristics of the ECS?
A
- Triggers a slower response
- Uses chemical messengers that are carried by the blood
- Response is long-lasting
- Can act on a large area of the body
6
Q
What is the main hormone released by the thyroid gland?
A
Thyroxine
7
Q
What does thyroxine do?
A
- Increase basal (resting) metabolic rate
8
Q
What happens when the concentration of the thyroxine hormone is low?
A
The hypothalamus produces TRH (thyrotropin-releasing hormone)
9
Q
What does the production of TRH cause?
A
The pituitary gland release TSH (thyroid-stimulating hormone) which stimulate secretion of the thyroxine by the thyroid gland
