Peripheral Nervous System Flashcards

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1
Q

Function of Somatic System

A

Sense and respond to external environment (voluntary and reflex arc)

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2
Q

Function of Autonomic Nervous system

A

Senses and responds to internal environment (involuntary)

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3
Q

What controls ANS

A

Hypothalamus and medulla oblongata

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4
Q

ANS- Sympathetic vs Parasympathetic

A

S- Preps for stress (fight or flight)
•Thoracic to lumber of spine
• Post ganglionic nerve near spinal cord releases norepinephrine as neuroTM which increase force of muscle contractions

PS- Brings back to homeostasis after stress (rest and digest)
• Cervical to caurdral part of spine
• Post ganglions near organs released acetylcholine as NeuroTM

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5
Q

Compare and Contrast the effect of sympathetic and parasympathetic nerves on the body

A

Sympathetic:
Heart Rate- increases
Peristalsis- decreased
Glucose- gets released from liver
Pupils- Dilated inhibiting tears
Bladder Spincter- constricts
Blood flow to skin- increases
Adrenal Gland- release ephinphrine

ParaSympathetic:
Heart Rate- decrease
Peristalsis- increases
Glucoses- stored in liver
Pupils- constricts
Bladder Spincter- relaxes
Blood flow to skin- decreases
Adrenal Gland- no effect

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6
Q

Stimulant drugs

A

Mimics stimulation provided by sympathetic nervous system

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