The Nervous System Flashcards
1
Q
Nerves
A
What neurones bundle into it by connective tissue
2
Q
How do neurones communicate with each other over synapses?
A
With chemicals called neurotransmitters
3
Q
What are the 3 features of a reflex arcs?
A
Responses that don’t have to be learnt
Have basically survival functions
Rapid
4
Q
Why don’t reflex arcs have to be learnt?
A
Because they are genetically encoded
5
Q
What basic survival functions do reflex arcs serve?
A
Reducing damage
Homeostasis
Escape from predators
6
Q
Why are reflex arcs rapid?
A
Involuntary because they don’t require conscious thought
Controlled by an arc with few synapses because chemical transmission between synapses is slow
