Nervous system Flashcards
1
Q
What are the two nervous systems and what do they contain
A
CNS(Central nervous system)
- Brain
- Spinal Cord
PNS(Peripheral Nervous System)
- Receptors
- Sensory Neurons
- Motor Neurons
2
Q
Diagram of Sensory and Motor Neuron
A
a
3
Q
Nerve pathway
A
Stimulus (heat, light, sound, chemicals) Receptors(eyes, nose, skin) SN CNS MN Effectors(muscle, glands) Response
4
Q
Reflex Pathway and what does it travel through
A
Relay Neuron instead of CNS
5
Q
What are reflex actions and why do we need them
A
Reflex actions are sneezing, coughing and moving your hand quickly when it touches hot things.
We need them to stop getting hurt and to react quickly.
6
Q
Draw a diagram of the Nerves transferring an electrical impulse
A
b
7
Q
What does a myelin sheath do
A
Insulates the nerve and stops impulses from leaking out
8
Q
What does a myelin sheath do
A
Insulates the nerve and stops impulses from leaking out
