Nuerons And Synaptic Transmisson

Question 1

What are the three types of neurons?and how can you tell the difference between each?

Answer 1

-sensory, short axons and long dendrites
-relay, short axons and short dendrites
-motor, long axons and short dendrites

Question 2

Function of sensory

Answer 2

Carry message from PNS to CNS

Question 3

Function of relay

Answer 3

Connect sensory to motor or other relay

Question 4

Function of motor

Answer 4

Connect CNS to effector e.g muscle

Question 5

Neurons all have the same basic structure but what are the 4 main components?

Answer 5

-axon
-dendrites
-cell body
-axon terminal

Question 6

What is the cell body

Answer 6

Contains nucleus and genetic material

Question 7

What are dendrite?

Answer 7

Branchlike structures from cell body carrying impulses from neurons to cell body

Question 8

What is an axon?

Answer 8

Carries electrical impulse away from cell body along neuron
( myelin sheath is a fatty layer that proctects axon and the gaps in between are node of fancier which speed up transmission)

Question 9

What is an axon terminal?

Answer 9

End of an axon where impulse is communicated to next neuron

Question 10

How does electrical transmission work?

Answer 10

Resting neuron is negative -
When activated it’s positive +
Causing action potential
Creating an electrical impulse that travels down axon to terminal

Question 11

What is a synapse?

Answer 11

The gap between neurons

Question 12

Are signals transmitted chemically within the nueron or from neuron to neuron?

Answer 12

Neuron to neuron (across synapse)

Question 13

When the electrical impulse reaches the end of the neuron what does it trigger?

Answer 13

The realease of a neurotransmitter from synaptic vesicles (tiny sacs)