Neuron

Question 1

Neurons are

Answer 1

The basic building blocks of the nervous system

Question 2

Neurons specialize

Answer 2

In receiving, processing, and transmitting info to other cells

Question 3

Neural communication

Answer 3

Is how messages are transmitted within each neutron and how messages are transmitted between neurons

Question 4

Dendrites

Answer 4

Receive messages from other cells

Question 5

Nucleus

Answer 5

Holds the genetic info

Question 6

Terminals

Answer 6

End parts button like ends

Question 7

Synapse

Answer 7

Small space between two neurons

Question 8

Axon

Answer 8

Passes messages away from the cell body to other neurons, muscles, or plans

Question 9

Cell body

Answer 9

Support centre, contains the nucleus

Question 10

Mylan sheath

Answer 10

Covers the axon, helps speed neural impulses

Question 11

Terminal branches of axon

Answer 11

Form junctions with other cells

Question 12

The synapse

Answer 12

Vesicles migrate to end(presynaptic)
Fuse with membrane
Share neurotransmitters
Bind to the other side (postsynaptic)

Question 13

Resting potential

Answer 13

The potential difference across a membrane

Question 14

Cells interesting potential are

Answer 14

Polarized at a resting state meaning there’s more negative charges inside versus outside of the cell

Question 15

How many potassium come in for every sodium out and resting potential

Answer 15

There’s three sodium to go out for every two potassium in

Question 16

What maintains the resting potential?

Answer 16

Negatively charged proteins, ions, and actions of the sodium and potassium pump maintain the resting potential

Question 17

What is the structure of a neuron?

Answer 17

Cell body,
Dendrites,
Axon
Terminal buttons
Synapse

Question 18

When a neuron is in a resting state it sits at

Answer 18

-70mV

Question 19

The synapse is where…

Answer 19

One neuron makes a connection with another

Question 20

Excitatory postsynaptic potential

Answer 20

Makes the sell less negatively charge and contributes to an action potential if there’s enough stimulation through summation

Question 21

Inhibitory postsynaptic potential

Answer 21

Makes the cell more negatively charged keeping out the positives

Question 22

Temporal summation

Answer 22

Neuron produces several action potential’s close in time

Question 23

Spatial summation

Answer 23

Two or more neurons release transmitters onto the same target neuron

Question 24

The _________of inhibitory and excitatory Synaptic inputs determines whether the cell will fire

Answer 24

Summation

Question 25

Action potential moves in

Answer 25

One direction

Question 26

Neural impulses

Answer 26

Brief electrical charge the travels down and axon

Question 27

Threshold

Answer 27

Level of stimulation required to trigger an action potential

Question 28

All or none

Answer 28

Axon Either fires or not, no gradation except in rate of fibre

Question 29

Once an action potential has been activated it continues all the way down to the axon by opening

Answer 29

Permeable channels for sodium and potassium

Question 30

In synopsis calcium acts as a

Answer 30

Signal to release neurotransmitters

Question 31

Threshold for action potential

Answer 31

-55mV

Question 32

Santiago Ramon y cajal discovered what?

Answer 32

That neurons are independent and are parts of the nervous system