The Process of Synaptic Transmission

Question 1

neurons typically consist of

Answer 1

dendrites, a cell body and an axon

Question 2

nerves are surrounded by a

Answer 2

myelin sheath

Question 3

a myelin sheath allows for

Answer 3

quicker transmission

Question 4

if the myelin sheath is damaged

Answer 4

transmission slows down

Question 5

signals WITHIN neurons are transmitted

Answer 5

electrically

Question 6

signals BETWEEN neurons are transmitted

Answer 6

chemically

Question 7

Dendrites receive signals from

Answer 7

Other neurons or sensory receptors

Question 8

The impulse is passed to the

Answer 8

Cell body

Question 9

From the cell body, the impulse is passed along the

Answer 9

Axon

Question 10

When a transmission reaches the axon, where does it reach next?

Answer 10

It reaches the terminal body of the presynaptic neuron

Question 11

The first part of synaptic transmission

Answer 11

1. Dendrites receive signals from other neurons or sensory receptors
2. The impulse is sent to the cell body
3. The impulse is then sent to the axon
4. When the impulse reaches the axon, it reaches the terminal button of the presynaptic neuron

Question 12

Synaptic transmission is the process of

Answer 12

Transmitting messages from neuron to neuron

Question 13

Synaptic transmission is where impulses stimulate

Answer 13

Neurotransmitters (chemical messengers)

Question 14

Where are neurotransmitters released from?

Answer 14

Vesicles

Question 15

Where are neurotransmitters released into?

Answer 15

A fluid filled gap

Question 16

What is a fluid filled gap?

Answer 16

The synapse

Question 17

What must the adjacent post synaptic neuron do?

Answer 17

It must quickly take up the neurotransmitters from the fluid at the receptor site.

Question 18

What must the adjacent post synapse do to the neurotransmitters?

Answer 18

It must convert them to an electrical impulse to travel down the dendrites to the next neuron.

Question 19

Neurotransmitters have either

Answer 19

Excitatory or inhibitory effect on the neighbouring neuron

Question 20

Neurotransmitters and receptor sites relate to each other in a specific way…

Answer 20

When a neurotransmitter reaches its appropriate receptor, it causes a ‘potential’ in the dendrites

Question 21

If a neurotransmitter has an excitatory potential/a positive charge, it makes it

Answer 21

More likely to fire

Question 22

If the neurotransmitter has a inhibitory potential/negative change, it makes it

Answer 22

Less likely to fire