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SP Anatomy exam 1 > Autonomic Nervous System > Flashcards

Autonomic Nervous System Flashcards

1
Q

Where is the cell body of origin for preganglionic neurons? Where does it terminate?

A

origin = CNS; terminates in ganglion

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2
Q

Where does the postganglionic neuron terminate?

A

Target Tissue

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3
Q

Location of Sympathetic Preganglionic CBO

A

T1 - L2

Lateral horn

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4
Q

Neurotransmitter of Sympathetic Preganglionic CBO

A

Acetylcholine

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5
Q

Neurotransmitter of Sympathetic Postganglionic CBO

A

Norepinephrine

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6
Q

Location of Parasympathetic Preganglionic CBO

A

Brainstem autonomic nuclei

Sacral cord

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7
Q

Neurotransmitter of Parasympathetic Preganglionic CBO

A

Acetylcholine

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8
Q

Neurotransmitter of Parasympathetic Postganglionic CBO

A

Acetylcholine

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9
Q

Function of Sympathetic Division

A

Fright, flight and/or fight

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10
Q

Function of Parasympathetic Division

A

Rest and Digest

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11
Q

Function of Enteric Division

A

Local control of viscera

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12
Q

The Enteric Division provides innervation for

A

Intestinal tract
Pancreas
Gall bladder

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13
Q

provides motor innervation to both layers of the tunica muscularis, having both parasympathetic and sympathetic input. Major innervation for GI tract

A

Myenteric plexus (of Auerbach)

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14
Q

Innervates the small intestine with strictly parasympathetic fibers and provides secretomotor innervation to the mucosa nearest the lumen of the gut

A

Submucous plexus (of Meissner)

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15
Q

Sympathetic pathway: Preganglionic -> Skin

A

Lateral Horn -> Ventral Root -> Spinal nerve -> white communicating ramus -> paravertebral chain -> Postganglionic neuron -> Gray communicating ramus -> Peripheral target (smooth muscle/glands)

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16
Q

Preganglionic axons ascend and descend in

A

Paravertebral chain

17
Q

Paravertebral chain order

A 
Paravertebral chain ascends in neck
Inferior cervical (stellate) ganglion
Middle cervical ganglion
Superior cervical ganglion
Postganglionic fibers
Carotid plexus
18
Q

Prevertebral Ganglia

A

Celiac ganglion
Superior mesenteric ganglion
Inferior mesenteric ganglion

19
Q

Adrenal Gland

A

Receives preganglionic fibers

Adrenal medulla consists of postganglionic neurons

20
Q

Distribution of Sympathetic division to head

A

Carotic plexus
Postganglionic neuron axons
Distribute to terminal segment of cranial
nerves

21
Q

Horner Syndrome definition and symptoms

A

Horner syndrome is due to a deficiency of sympathetic activity. The site of lesion to the sympathetic outflow is on the ipsilateral side of the symptoms.
Ptosis (eyelid droop) - Superior Tarsal Muscle
Miosis (small pupil) - pupillary constrictor muscle
Anhydrosis (dry skin)
Endophthalmos (apparent sunken eye)

22
Q

Four Cranial Nerves with parasympathetic fibers

A

Cranial nerve III - Oculomotor
Cranial nerve VII - Facial
Cranial nerve IX - Glossopharyngeal
Cranial nerve X - Vagus

23
Q

Edinger-Westphal nucleus

A

Located in midbrain. Supplies preganglionic parasympathetic fibers from Oculomotor n. (III) to the eye, constricting the pupil, accommodating the lens, and convergence of the eyes. Via Ciliary Ganglion

24
Q

Superior salivatory nucleus

A

Carries parasympathetic facial n. (VII) fibers and located in the pontine tegmentum

25
Q

Where do parasympathetic fibers from the Facial n. terminate?

A
  1. Pterygopalatine ganglion
    • Nasal and lacrimal glands
  2. Submandibular ganglion
    • Submandibular and sublingual salivary glands
26
Q

Inferior salivatory nucleus

A

Carries parasympathetic fibers from Glossopharyngeal N. (IX). Located in the medulla

27
Q

Where do parasympathetic fibers from the Glossopharyngeal n. terminate?

A

Otic ganglion

Parotid salivary gland

28
Q

Location of Dorsal motor nucleus of the vagus

A

medulla

29
Q

Termination and function of parasympathetic fibers from the Vagus n.

A
  • Wall of target tissue
    Viscera from thorax to transverse colon
    Location of postganglionic nerve cell
    bodies
    -Reduces heart rate, blood pressure
    Increases gastric secretion, peristaltic
    activity
30
Q

Sacral Parasympathetic location

A

S 2 - 4 region of lateral horn

31
Q

Termination and Function of Sacral parasympathetic fibers

A

Terminates in:
Wall of target tissue
Viscera from transverse colon to rectum
Includes bladder, uterus, etc.
Location of postganglionic nerve cell bodies
- Increases intestinal secretion, peristaltic activity

SP Anatomy exam 1 (8 decks)

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