sac 5 the neuron

Question 1

label it

Answer 1

if you cant you suck :)

Question 2

dendrites

Answer 2

thin extensions of a neuron that receives information from other neurons and transmits it to the soma

Question 3

soma

Answer 3

combines the neural information received from the dendrites and sends it to the axon

Question 4

axon

Answer 4

a single, tube like, extension that transmits neural information away from the soma to other neurons

Question 5

myelin sheath

Answer 5

white fatty substance that coats and helps insolate the axon from the activity of other nearby neurons. small gaps in it are known as nodes of ranvier which increase the speed of the action

Question 6

axon terminals

Answer 6

end of axon are axon collaterals and the end of those are axon terminals. they have a synaptic button which secretes a chemical called a neurotransmitter.

Question 7

synaptic gap

Answer 7

space between neurons where neural transmitters carry information from one neuron to another

Question 8

neurons

Answer 8

specialised nerve cells in the nervous systems that enable communication of information around the body
occurs by:
- receiving
- transmitting
- processing information

Question 9

glial cells + roles of

Answer 9

support neurons. without them neuros could not function. estimated one for each neuron.

• hold neuron in place
• provides neurons with nutrients and oxygen
• repairs neurons
• eliminate diseased or damaged neurons
• insulates neurons from each other
• produces myelin
• aids with neurotransmitting

Question 10

neural communication & messages

Answer 10

only occur in one direction ad neural messages are only carried one neuron at a time

Question 11

transmission process

Answer 11

1. neural transmitters travel through dendrites to soma where they are converted to action potentials and travel along the axon
2. reaches the axon terminals and stimulates the release of neural transmitters
3. terminal buttons send the signal to the next neuron
4. neuro transmitters carry the signal across the synaptic gap
5. the receptors on the next neuron receive the message
6. the process repeats