Neurons

Question 1

What’s a neuron?

Answer 1

a **nerve cell **responsible for transmitting, receiving, and processing information

Question 2

what are the 3 types of neurons?

Answer 2

1. sensory/ afferent neurons
2. interneurons
3. motor/ efferent neurons

Question 3

What do sensory/afferent neurons do?

Answer 3

transmits information from sensory cells in the body to the brain

Question 4

What do interneurons do?

Answer 4

organises and integrates sensory information in the brain, then initiates and coordinates motor responses

Question 5

What do motor/ efferent neurons do?

Answer 5

transmits motor commands from interneurons to the glands and muscles of the body

Question 6

Draw the autonomy of a neuron

Answer 6

check answer in book

Question 7

what does a dendrites do in a neuron?

Answer 7

the bushy spines of a neuron that extend from the soma and receive messages (neurotransmitters) from other neurons

Question 8

What does the axon do in a neuron?

Answer 8

the long strand-like part of a neuron that conducts electrical impulses away from the cell body towards the terminal buttons

Question 9

What is the soma/cell body do in a neuron?

Answer 9

includes a nucleus which controls the neuron

Question 10

What does the axon terminal do in a neuron?

Answer 10

the ends of a neuron that release neurotransmitters (chemical messages) into the synapse

Question 11

What does the myelin sheath do in the neuron?

Answer 11

the fat and protein substance that surrounds and insulates the axon of a neuron, and speeds up neural transmission

Question 12

What are the synaptic knobes?

Answer 12

Contain vesicles which hold neurotransmitters involved in moving signals to adjacent cells

Question 13

What is the synapse?

Answer 13

The space between neurons where transmission occurs

Question 14

What do neuron’s communicate?

Answer 14

Using electrochemical energy.
-Electrical- within the neuron–> electrical impulses is transmitted along the axon
-Chemical- between neutrons–> takes place in the synapse when neurotransmitters (chemicals) are sent form the axon terminals of the presynaptic neuron, to the dendrites of the postsynaptic neuron

Question 15

What are glial cells?

Answer 15

Cells that prove the structural framework that enables a network of neurons to remain connected.