Nervous System (MIDTERM)

Question 1

Central Nervous System (CNS)

Answer 1

Is found in the brain and spinal cord

Question 2

Peripheral Nervous System (PNS)

Answer 2

Is found in the rest of the body nerves that is not apart of CNS

Question 3

Functions of the nervous system ( three functions)

Answer 3

Sensory, Integrative, Motor

Question 4

Sensory
( FUNCTION OF THE NERVOUS SYSTEM )

Answer 4

Nerves gather info. inside the body and from the outside environment

Question 5

Integrative
( FUNCTION OF THE NERVOUS SYSTEM )

Answer 5

Sensory info. brought to the CNS to be understood

Question 6

Motor
( FUNCTION OF THE NERVOUS SYSTEM )

Answer 6

Conveys info. from the CNS towards the muscles and glands of the body

Question 7

Cells of the nervous system ( 2 cells )

Answer 7

Neuroglia ( Glial ) and the Neurons

Question 8

Neuroglia ( Glial ) cell

Answer 8

Most abundant type
Support, protect, insulate, and nourish cells

Question 9

Neurons

Answer 9

basic cells
Communicating for the nervous system

Question 10

Types of Neuroglial cells assistant

Answer 10

Astrocytes
Ependymal
Microglia
Oligodendrocytes
( all found in the CNS )

Question 11

Astrocytes cells
( apart of the Glial )

Answer 11

-Star shaped cells
-assist with the blood brain barrier
-assisting withe scar tissue in the brain
in CNS

Question 12

Blood-Brain Barrier
( apart of the Astrocytes cells )

Answer 12

Prevents toxic or disease substances in the blood from entering the nervous tissue of the brain and spinal cord

Question 13

Ependymal cells
( apart of the Glial )

Answer 13

Lines the lateral ventricles of the brain and form the Cerebrospinal Fluid (CSF) in CNS

Question 14

Cerebrospinal Fluid
( apart of the Ependymal cell )

Answer 14

• Fluid flowing down in the spinal
• made of nutrients that our body needs
• water sugars , proteins, electrolytes
  -protective mechanism for the brain
• protein that helps with the immune system
  CNS

Question 15

Microglia
( apart of glial )

Answer 15

eat and dispose of specific substances in the brain
Phagocytic in CNS

Question 16

Oligodendrocytes
( apart of the Glial )

Answer 16

form the myelin in CNS

Question 17

Myelin
( Apart of the Glial )

Answer 17

lipid \ protein that surrounds your axon for fast ( fast conduction ) communication in CNS

Question 18

Schwann cells

Answer 18

form myelin location is in PNS

Question 19

Neuron parts ( 3 )

Answer 19

cell body
dendrites
axon

Question 20

Dendrites

Answer 20

branched or receiving info.

Question 21

Axon

Answer 21

carry info. away

Question 22

Parts of Axon

Answer 22

Neurilemma
Myelin sheath
Nodes of Ranvier
Axon Terminal

Question 23

Neurilemma
(Part of the Axon )

Answer 23

specialize membrane
assist with myelin productions in PNS

Question 24

Nods of Ranvier
(Part of the Axon )

Answer 24

gaps between the axon and the myelin
generates electric impulses along the axon
fast impulses

Question 25

Myelin sheath
( Part of the Axon )

Answer 25

fatty layer insulated with the Ranvier substance

Question 26

Axon Terminal

Answer 26

The end of a axon
terminal end

Question 27

3 Types of neurons

Answer 27

Sensory Neurons
Motor Neurons
Interneurons

Question 28

Sensory Neuron

Answer 28

( afferent \ towards ) carry info. from Periphery to CNS
BODY TO BRAIN

Question 29

Motor Neuron

Answer 29

( efferent \ away ) carry info. from CNS to Periphery
BRAIN TO BODY

Question 30

Interneurons

Answer 30

In CNS only
connect sensory and motor neurons

Question 31

Matter in the brain ( 2 )

Answer 31

White matter tissue
Gray matter tissue

Question 32

White matter

Answer 32

primarily full of myelinated axons for communication
( sending info. )

Question 33

Gray Matter

Answer 33

Unmyelinated axons
made up of lots of interneurons between the motor and sensory
( Processing, assisting with what’s going on in the brain )

Question 34

Nerve Impulses

Answer 34

Electrical signals
action potential
move with sensory or motor neurons