Nerve Impulse

Question 1

Is an electrical current that travels throughout dendrites or axons due to ions moving through voltage dated channels in the neurons plasma membrane

Answer 1

Nerve impulse

Question 2

Two kinds of nerve impulses

Answer 2

Resting in action potential

Question 3

When a neuron is not actively transmitting a nerve impulse, it is in arresting state, ready to transmit a nerve impulse

Answer 3

Resting potential

Question 4

It begins when the neuron receives a chemical signal from another cell

The signal causes gates and sodium ion channels to open allowing positive sodium ions of flow back into the cell. As a result the inside of the cell becomes positively charged compared to the outside of the cell. This reversal of charge ripples down the axon very rapidly as an electric current.

Answer 4

Action potential

Question 5

____ are a unit of measurement used to quantify the electrical potential difference across a cell membrane of a neuron.

Answer 5

MilliVolt

Question 6

____ potential is the minimum potential difference that must be reached in order to fire an action potential.

Foremost neurons in humans this lies at -55 mV.

Answer 6

Threshold

Question 7

____ refers to a change in the electrical potential across the membrane of a neuron or other excitable cell, such as a muscle cell, where the inside becomes less negative compared to the outside.

The membrane potential becomes less negative or even positive, usually due to the influx of positive charge ions such as sodium into the cell.

Answer 7

Depolarizing

Question 8

_______ is the process by which the neuron regains is negative resting membrane potential. It starts between positive 30 and positive 40 millivolts. In this range, voltage gated sodium channels will close and voltage gated potassium channels will open.

Answer 8

repolarizing

Question 9

The place where an axon terminal meets another cell is called a ____.
This is where the transmission of a nerve impulse to another cell occurs.

Answer 9

Synapse

Question 10

This store various neurotransmitters that are released at the synapse
The release are is regulated by a voltage dependent calcium channel
____ are essential for propagating nerve impulses between neurons and are constantly recreated by the cell

Answer 10

Synaptic vesicles
Vesicles

Question 11

Is about 0.02 micron wide

The rival of a nerve impulse at the prison of the terminals causes the movement toward the prisonactive membrane of membrane bound sacs or synaptic vesicles which fuse the membrane and release a chemical substance called a neurotransmitter

Answer 11

Synaptic clef

Question 12

Are endogenous chemicals that allow neurons to communicate with each other throughout the body

They enable the brain to provide a variety of functions through the process of chemical synaptic transmission

This endogenous chemicals are integral in shaping everyday life and functions

Answer 12

Neurotransmitter

Question 13

Are biological transducers that convert energy from both external and internal environments into electrical impulses

Answer 13

Receptors