Neurvous System Flashcards
1
Q
What are the three types of neurons?
A
Motor neurons, Interneurons, Sensory neurons
2
Q
What is a motor neuron?
A
makes things move
3
Q
What is an interneuron?
A
interprets
4
Q
What does a sensory neuron do?
A
senses
5
Q
What are dendrites?
A
- receive and pick up messages
- conducts electrical stimulation from other cells, through synapses to the body
6
Q
What is an axon hillock?
A
- determines the threshold
- part of a neuron that connects the cell body to the axon
7
Q
What are nodes of Ranvier?
A
- speed up the message
- breaks in myelin
8
Q
What is myelin?
A
- fat that insulates the axon
- coats axons in the brain and the rest of the CNS
9
Q
What is neurolemma?
A
- insulating myelin layer that surrounds peripheral nerve fibre
- regenerates axons that have been injured
10
Q
What are nerve endings?
A
- send signals to brain so you know how something feels if it hurts
11
Q
What are neurotransmitters?
A
- special chemicals that your nerve cells use to talk to each other
- released from the axon terminal of one neuron into a synapse
12
Q
What is a synapse?
A
- information flows from one neuron to another across a synapse
- synapse contains a small gap separating neurons
13
Q
What are the 5 parts of the brain?
A
- frontal lobe
- temporal lobe
- parietal lobe
- occipital lobe
- cerebellum
14
Q
What does frontal lobe do?
A
for personality and thinking
15
Q
What does parietal lobe do?
A
sensory
