Quiz 1: ANS Flashcards

1
Q

What is the Autonomic Nervous System?

A

A division of the peripheral nervous system that regulates involuntary bodily functions such as heart rate, digestion, and respiration

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2
Q

What are the two branches of the ANS?

A

1) Sympathetic Nervous System
2) Parasympathetic Nervous System

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3
Q

What are the 2 Neurons between the central nervous system and the organ/system

A

1) Pre ganglionic neuron
- Cell body located in the CNS within the brain or spinal cord and its axon going to the PNS to synapse with the second neuron
2) Post-ganglionic:
- Cell body located within a ganglion in the PNS and its axon going to the effector organ/tissue

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4
Q

Primary neurotransmitter of the Parasympathetic nervous system

A

Acetylcholine

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5
Q

Primary neurotransmitter of the Sympathetic nervous system

A

Norepinephrine

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6
Q

What is responsible for the “Fight or flight” response which prepares the body for physical activity or stress

A

Sympathetic nervous system

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7
Q

SNS effects on HR, BP, and RR

A

Increases all

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8
Q

SNS impact on digestive and non-essential functions

A

Decreased

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9
Q

Where are preganglionic cells located on the spinal cord?

A

T1-L3 (thoracolumbar outflow)

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10
Q

What is responsible for the “rest and digest” response which promotes relaxation and digestion

A

Parasympathetic Nervous System

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11
Q

Parasympathetic Nervous effect on HR, BP, and RR

A

Decreases

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12
Q

Parasympathetic effect on digestive and non essential functions during long periods of rest and relaxation

A

Increases

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13
Q

Effect on Iris

A

Sympathetic Stimulation: Pupil Dilation
Parasympathetic Stimulation: Pupil constriction

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14
Q

Effect on salivary gland

A

Sympathetic Stimulation:
- Saliva production reduced
Parasympathetic Stimulation:
- Saliva production increased

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15
Q

Effect on oral/nasal mucosa

A

Sympathetic Stimulation:
Mucus production reduced

Parasympathetic Stimulation:
-Mucus Production Increased

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16
Q

Effect on Bladder

A

Sympathetic Stimulation:
- Wall of bladder relaxed, internal urethral sphincter closed

Parasympathetic Stimulation:
- Wall of bladder contracts, internal urethral sphincter open