3.3 The Organization of the Nervous System Flashcards

1
Q

What is the “Nervous System”?

A

An interacting network of neurons that conveys electrochemical information throughout the body.

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2
Q

What does the CNS include?

A

The brain, and the spinal cord

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3
Q

What is the PNS?

A

The peripheral nervous system connects the CNS to the body’s organs and muscles.

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4
Q

What are the major subdivisions of the Peripheral Subdivision?

A

Somatic Nervous System

Autonomic Nervous System

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5
Q

A set of nerves that conveys information between voluntary muscles and the central nervous system.

A

Somatic Nervous System

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6
Q

A set of nerves that carries involuntary and automatic commands that control blood vessels, body organs, and glands

A

Autonomic Nervous System

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7
Q

What are the two major subdivisions of the Autonomic Nervous System?

A

Sympathetic

Parasympathetic

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8
Q

A set of nerves that prepares the body for action in challenging or threatening situations.

A

Sympathetic Nervous System

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9
Q

A set of nerves that helps the body return to a normal resting state

A

Parasympathetic Nervous System

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10
Q

What’s the PAIN WITHDRAWAL REFLEX?

A

Withdrawing from pain is a reflexive activity controlled by the spinal cord. Painful sensations (such as the heat of fire) travel directly to the spinal cord via sensory neurons, which then issue an immediate command to motor neurons to retract the hand.

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11
Q

What are the 4 main sections of the Spinal Cord?

A

Cervical Nerves

Thoracic Nerves

Lumbar Nerves

Sacral Nerves

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12
Q

What do Cervical Nerves connect to?

A

Head

Neck

Biceps/Deltoid

Wrist extenders

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13
Q

What do Thoracic Nerves connect to?

A

Chest

Abdomen

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14
Q

What do Lumbar Nerves connect to?

A

Legs

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15
Q

What do Sacral Nerves connect to?

A

Bowel/bladder

Sexual function

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16
Q

Simple pathways in the nervous system that rapidly generate muscle contractions

A

Spinal reflexes

17
Q

A neural pathway that controls reflex actions

A

Reflex Arc

18
Q

What’s the correlation between Spinal Cord region and impairment?

A

The higher up the damage on the Spinal Cord, the greater the impairment