NERVOUS SYSTEM

Question 1

What is the Central Nervous System?

Answer 1

Brain and Spinal Cord

Question 2

What is the Peripheral Nervous system ?

Answer 2

Spinal and Cranial Nerves

Question 3

In the human brain the Pre-frontal Cortex does?

Answer 3

ASSISTS IN THE PLANNING OF MOVEMENT

Question 4

IN the Human brain the Motor Cortex does?

Answer 4

Controls specific muscles

Question 5

In the Human brain the Somato-sensory cortex does?

Answer 5

INTERPRETS SENSORY INFORMATION

Question 6

In the human brain the Cerebellum does?

Answer 6

HELPS COORDINATE MOVEMENT

Question 7

What are the Four regions of the spinal cord ?

Answer 7

CERVICAL 
THORACIC 
LUMBAR 
SACRAL 
COCYGEAL

Question 8

How many pairs of Cranial nerves are there?

Answer 8

12

Question 9

What does the Somatic Nervous System do?

Answer 9

VOLUNTARY CONTROL OF THE SKELETAL MUSCLES

Question 10

What does the Autonomic nervous system do?

Answer 10

INVOLUNTARY CONTROL OF SMOOTH MUSCLE, CARDIAC MUSCLE AND GLANDS

Question 11

In the Autonomic Nervous System there are two different system, what are they?

Answer 11

SYMPATHETIC

PARASYMPATHETIC

Question 12

What are the different types of Neurons ?

Answer 12

SENSORY (AFFERENT)

MOTOR (EFFERENT)

Question 13

Ventral Root+Dorsal Root=

Answer 13

Spinal nerve

Question 14

The ____________, or neuron, consists of a nerve cell body and projections from it, which are known respectively as the axon and the dendrite.

Answer 14

NERVE

Question 15

In a motor nerve, the _______________ receives information from surrounding tissue and conducts the nerve impulse to the nerves cell body (responsible for neuron nutrition).

Answer 15

DENDRITE

Question 16

The __________ conducts the nerve impulse from the cell body to the muscle fibers

Answer 16

AXON

Question 17

A nerve innervating a muscle is referred to as a ________________, and that plus all muscle fibers it innervates is known as a motor unit.

Answer 17

MOTOR NEURON

Question 18

Neurons can be divided into three basic parts

Answer 18

Cell body
-contains the nucleus 
DENDRITES 
-conduct impulses toward cell body 
AXON 
-carries electrical impulse away from cell body.

Question 19

__________________

Ability of the neuron to respond to Stimulation.

Answer 19

IRRITABILITY

Question 20

_________________

Capable of sending information to other structures. (Muscles, glands, and other neurons)

Answer 20

CONDUCTIVITY

Question 21

Neurons can pump large quantities of ions across their membranes to produce a voltage difference (an electrical potential) between the inside and outside of the cell. This is called the ______________________________.

Answer 21

MEMBRANE POTENTIAL

Question 22

What can be triggered once you stimulate the neuron?

Answer 22

ACTION POTENTIAL

Question 23

An_________________ at one point on the surface of a cell will set off action potentials around it in a chain reaction, spreading almost instantly across the entire cell and down its axon.

*Opens Na+ channels, and Na+ diffuses into cell. (Inside becomes more positive)

Answer 23

ACTION POTENTIAL

Question 24

____________ of action potentials is the basis of most communication within the Nervous system.

Answer 24

TRANSMISSION

Question 25

______________
-return to resting membrane potential.

• K+ leaves the cell rapidly
• Na+ channels close

Answer 25

REPLORIZATION

Question 26

_____________-

Once a nerve impulse is intimidated, it will travel the length of the neuron.

Answer 26

ALL-OR-NONE LAW

Question 27

When an action potential is triggered, this sharp, clear signal is transmitted along the axon.
–At its far end, the axon breaks up into a number of terminal branches. Specialized swellings on these branches are called _______________ OR _______________

Answer 27

AXON TERMINALS

TERMINAL BOUTONS

Question 28

–An action potential causes the boutons to release chemical signaling compounds called_______________.
–Which connect with receptors on the target cell.
–The combination of the neurotransmitters with the receptors can open ion channels or trigger other changes.

Answer 28

NEUROTRANSMITTERS

Question 29

____________________

• a fatty substance surrounding some neurons.
• helps to facilitate the speed of the nerve impulse down the axon.

Answer 29

MYELIN

Question 30

_________________

• causes de-myelination
• muscle fibers are affected
• creates more interference
• muscle weakness, vertigo, and partial blindness
• no know cure.

Answer 30

MULTIPLE SCLEROSIS

Question 31

Regions at which transfer of electrical information between a nerve cell and another cell (which may or may not be another nerve cell) occurs are known as synapses, and the process of information transfer is called_____________________

*Neuromuscular transmission

Answer 31

Synaptic transmission

Question 32

Excitation of the motor nerve is followed by _______________ and ____________________________.

Answer 32

Excitation and contraction of the muscle.