Cental Nervous System

Question 0

The CNS include

Answer 0

Brain

Spinal cord

Question 1

CNS

Answer 1

Central nervous system

Question 2

Brain & Spinal functions

Answer 2

• integration; command centre
• interpretation of incoming sensory information
• outgoing instructions

Question 3

PNS stands for

Answer 3

Peripheral nervous system

Question 4

PNS

Answer 4

Nerves extending from the brain and spinal cord, sensory receptors, ganglia (serve as communication lines)

Question 5

Spinal nerves

Answer 5

Carry impulses to and from the spinal cord

Question 6

Cranial nerves

Answer 6

Carry impulses to and from the brain

Question 7

Sensory (afferent) division

Answer 7

Nerve fibres that carry information to from the central nervous system

Question 8

Motor (efferent) division

Answer 8

Nerve fibres that carry impulses away from the central nervous system

Question 9

Autonomic fibres

Answer 9

Organs, glands

Question 10

Somatic fibres

Answer 10

Skeletal muscle

Question 11

Two subdivisions

Answer 11

• somatic nervous system

- autonomic nervous system

Question 12

Somatic nervous system-voluntary

Answer 12

Conscious control of skeletal muscles

Question 13

Autonomic nervous system

Answer 13

Autonomic control of smooth and cardiac muscles and glands

• sympathetic
• parasympathetic

Question 14

Support cells in the CNS

Answer 14

Neuroglia

Question 15

Types of cells in the CNS

Answer 15

• Astrocytes
• Microglia
• Ependymal cells
• Oligodendrocytes

Question 16

Astrocytes

Answer 16

• Abundant, star-shaped cells
• Brace neurons
• Form barrier between capillaries neurons
• Control the chemical environment

Question 17

Microglia

Answer 17

• Spider like phagocytes

- Dispose of debris

Question 18

Microglial cells

Answer 18

Are phagocytes that defend CNS cells

Question 19

Ependymal Cells

Answer 19

• Line cavities of the brain and spinal cord

- Cilia assist with production and circulation of cerebrospinal fluid

Question 20

Ependymal cells line

Answer 20

Cerebrospinal fluid-filled cavities

Question 21

Oligodendrocytes

Answer 21

• Wrap around nerve fibres in central nervous system (CNS)
• Produce myelin sheaths
  
  • Fatty protective layer around axons

Question 22

Oligodendrocytes have

Answer 22

-Processes that form myelin sheaths around CNS nerve fibres

Question 23

Support cells in the PNS

Answer 23

• Satellite cells

- Schwann cells

Question 24

Satellite cells

Answer 24

-Protect neuron cell bodies in ganglia

Question 25

Schwann cells

Answer 25

-Form myelin sheath in the PNS

Question 26

Satellite cells and Schwann cells (which form myelin)

Answer 26

Surround neurons in the PNS

Question 27

Neurons= nerve cells specialized to

Answer 27

-Generate and transmit messages (action potentials)

Question 28

Major regions of neurons

Answer 28

- Cell body= nucleus and metabolic centre of the cell | - Processes= fibres that extend from the cell body

Question 29

The Nervous cell processes are

Answer 29

- Dendrites (nervous may have hundreds of dendrites) | - Axons (nervous have only one axon arising from the cell body at the axon hillock)

Question 30

Dendrites job is

Answer 30

-Conduct impulses toward the cell body

Question 31

Axons job is

Answer 31

-Conduct impulse away from the cell body

Question 32

What is an axon made of?

Answer 32

End in Axon terminals which contain vesicles with a neurotransmitter and are separated from the next neuron by a synaptic cleft.

Question 33

What is a synapse

Answer 33

Junction between neurons

Question 34

Most neuron cell bodies are found in the

Answer 34

Central nervous system (CNS)

Question 35

Gary matter are found in

Answer 35

-Cell bodies and in unmyelinated fibres

Question 36

Nuclei are found in

Answer 36

-Clusters of cell bodies within the Central Nervous System

Question 37

Ganglia are found in

Answer 37

-Clusters of cell bodies outside the Central Nervous System

Question 38

Tracts are

Answer 38

-bundles of nerve fibres (axons) in the central nervous system

Question 39

Nerves are

Answer 39

-Bundles of nerve fibres (axons) in the PNS

Question 40

White matter is

Answer 40

-Collections of myelinated fibres

Question 41

Cutaneous function

Answer 41

-sense organs

Question 42

Proprioceptors function

Answer 42

Detect stretch or tension

Question 43

Muscle spindles

Answer 43

Located in muscle

Question 44

Golgi tendon organs

Answer 44

located in tendon