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PNS > Unit IV Autonomic Nervous System Study Guide I > Flashcards

Unit IV Autonomic Nervous System Study Guide I Flashcards

0
Q

T/F There are at least 2 neurons which interpose between the central to somatic effectors.

A

False

visceral effectors

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1
Q 
The splanchnic component of the ANS innervated all of the following except:
A viscera
B glands
C blood vessels
D striated muscles
A

D striated muscles

It innervated Non-striated muscles

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2
Q

T/F Axons of the primary neurons of the ANS are usually unmyelinated and pass to the peripheral ganglia.

A

False.

They are usually myelinated

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3
Q

T/F The disproportion between preganglionic and postganglionic neurons is less in the parasympathetic nervous system than the sympathetic system.

A

True

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4
Q

The disproportion between preganglionic and postganglionic neurons of the parasympathetic nervous system is __________.

A

1:15-20

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5
Q 
Which of the following has the largest disproportion between preganglionic and postganglionic neurons.
A somatic efferent system
B sympathetic nervous system
C parasympathetic nervous system
D branchial efferent nervous system
A

B Sympathetic nervous system

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6
Q

T/F The visceral afferent paths resemble somatic efferent paths.

A

False.

Visceral afferent paths resemble somatic afferent paths.

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7
Q

The sympathetic preganglionic efferent fibers appear through all thoracic and 1st, 2nd, and/or 3rd lumbar spinal nerves, which is known as __________ outflow.

A

Thoracolumbar

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8
Q 
The parasympathetic preganglionic efferent fibers emerge through all of the following except:
A Oculomotor nerve
B Trigeminal nerve
C Vagus
D 1st sacral nerve
A

B Trigeminal nerve &
D 1st sacral nerve

No parasympathetic output…remember 3, 7, 9, and 10 are Parasympathetic friends

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9
Q

What nerves are included in the sympathetic preganglionic efferent fiber outflow.

A

T1-L2 or L3

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10
Q 
The enteric nervous system contains all of the following reflex pathways except:
A Striated muscular contraction
B Digestive enzyme secretion
C Peristalsis reflex
D Blood flow
A

A Striated muscular contraction

Should be Non-striated muscular contraction

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11
Q

All of the following are peripheral ganglia of the cranial part of the parasympathetic system, EXCEPT;
a. otic ganglion b. genicular ganglion c. submandibular ganglion c. ciliary ganglion.

A

b. genicular ganglion

Including the pterygopalatine ganglion

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12
Q

All of the following carries myelinated preganglionic parasympathetic axons, EXCEPT;
a. facial nerve b. accessory cranial nerve c. third sacral spinal nerve d. trigeminal nerve

A

b. accessory cranial nerve &
d. trigeminal nerve

(no parasympathetics)

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13
Q

Name the nerve, which carries postganglionic parasympathetic fibers to the constrictor pupillae.

A

Short Ciliary nerves of Ciliary ganglion

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14
Q

Name the nerve, which carries facial preganglionic parasympathetic fibers from the main facial trunk.

A

Chorda tympani of the Facial trunk

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15
Q

Name two branches of the facial nerve, which carry preganglionic parasympathetic fibers.

A

Greater Petrosal nerve of the Genicular ganglion of Facial nerve
Chorda tympani of the Facial trunk

16
Q 
Which of the following nerves mainly carries the preganglionic parasympathetic fibers from the main facial nerve trunk to the lacrimal gland?
a  Posterior auricular nerve	
b Chorda tympani 
c. Greater petrosal nerve  
d. Nerve to the stapedius
A

c. Greater petrosal nerve

know sequence

17
Q

Name the branch of the glossopharyngeal nerve, which carries preganglionic parasympathetic fibers.

A

Tympanic branch of Glossopharyngeal Nerve

18
Q

Which of the following ganglia is not a peripheral ganglion for the cranial parasympathetic nerve?

a. Genicular ganglion
b. Submandibular ganglion
c. Otic ganglion
d. Pterygopalatine ganglion

A

a. Genicular ganglion

Genicular ganglion is not solely parasympathetic
Don’t forget ciliary ganglion is also included

19
Q

The pelvic splanchnic nerves supply vasodilator fibers to all of the following, EXCEPT;

a. corpora cavernosa
b. corpus spongiosus
c. glans of the penis
d. prepuce

A

d. prepuce

20
Q

The pulmonary branch of the vagus is bronchiodilator. True/False

A

False. Bronchioconstrictor

21
Q

Name the branch of the facial nerve, which carries the preganglionic parasympathetic efferent fibers to control small glands in the nasal cavity, palates, and nasal sinuses above the oral cavity.

A

Greater Petrosal Nerve of Genicular ganglion of Facial Nerve

22
Q

Name the branch of the facial nerve, which carries the preganglionic parasympathetic efferent fivers to control the salivary glands and lingual glands below the oral cavity.

A

Chorda tympani of Facial nerve trunk

23
Q

The disproportion or ratio of the sympathetic nervous system between the preganglionic and postganglionic fibers is____.

A

Much Wider 1:196

24
Q 
The sympathetic system innervates all of the following, EXCEPT
A. Sweat glands.
B. The ciliary body. 
C. The arrectores pilorum
D. The constrictor pupillae.
A

D. The constrictor pupillae.

Include:
eyelid, esophagus, muscle of the iris, non-striated muscle of the urogential tract, abdominopelvic viscera, heart, lung, respiratory tree

25
Q

Name the spinal cord segments where the somata of the preganglionic sympathetic fibers arise.

A

T1-L2 or L3 from the Lateral Grey Column (Intermediolateral and Intermediomedial neuronal groups)

26
Q

What is the size in diameter of the axons of the white ramus communicant?

A

1.5u to 4u

27
Q

Name the spinal cord segments of the outflow of the sympathetic nervous system.

A

Thoracolumbar T1-L2 or L3

28
Q

How many white rami communicans arise from the thoracic spinal nerve?

A

12 pairs from thoracic

14 total including L1-L2

29
Q

The sympathetic preganglionic fibers pass in the ventral spinal root as myelinated fibers. True/False

A

True

Post ganglionic is unmyelinated

30
Q

To reach a sympathetic ganglion, the preganglionic sympathetic fibers behave as following, EXCEPT;

a. They synapse in the nearest ganglion.
b. They transverse the nearest ganglia to reach the celiac ganglion to synapse.
c. They transverse the nearest ganglia and ascend or descend in the sympathetic chain to reach another ganglion for synapse.
d. They transverse the sympathetic chain ganglia and reach the effecter organs to synapse.

A

D

31
Q

The postganglionic sympathetic fibers return to the spinal nerves through the (white/grey) rami communicans.

A

Grey

Thru the grey because they are unmyelinated

32
Q

Most peripheral nerves contain postganglionic parasympathetic fibers. True/False

A

False

Contain postganglionic sympathetic fibers

33
Q

Peripheral autonomic activity is integrated at the brainstem which includes all of the following, EXCEPT;

a. limbic system
b. thalamus
c. hypophysis
d. hypothalamus.

A

c. hypophysis

Include: Reticular Formation and prefrontal neocortex

PNS (13 decks)

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