Unit IV Autonomic Nervous System Study Guide I Flashcards
T/F There are at least 2 neurons which interpose between the central to somatic effectors.
False
visceral effectors
The splanchnic component of the ANS innervated all of the following except: A viscera B glands C blood vessels D striated muscles
D striated muscles
It innervated Non-striated muscles
T/F Axons of the primary neurons of the ANS are usually unmyelinated and pass to the peripheral ganglia.
False.
They are usually myelinated
T/F The disproportion between preganglionic and postganglionic neurons is less in the parasympathetic nervous system than the sympathetic system.
True
The disproportion between preganglionic and postganglionic neurons of the parasympathetic nervous system is __________.
1:15-20
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
B Sympathetic nervous system
T/F The visceral afferent paths resemble somatic efferent paths.
False.
Visceral afferent paths resemble somatic afferent paths.
The sympathetic preganglionic efferent fibers appear through all thoracic and 1st, 2nd, and/or 3rd lumbar spinal nerves, which is known as __________ outflow.
Thoracolumbar
The parasympathetic preganglionic efferent fibers emerge through all of the following except: A Oculomotor nerve B Trigeminal nerve C Vagus D 1st sacral nerve
B Trigeminal nerve &
D 1st sacral nerve
No parasympathetic output…remember 3, 7, 9, and 10 are Parasympathetic friends
What nerves are included in the sympathetic preganglionic efferent fiber outflow.
T1-L2 or L3
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 Striated muscular contraction
Should be Non-striated muscular contraction
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.
b. genicular ganglion
Including the pterygopalatine ganglion
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
b. accessory cranial nerve &
d. trigeminal nerve
(no parasympathetics)
Name the nerve, which carries postganglionic parasympathetic fibers to the constrictor pupillae.
Short Ciliary nerves of Ciliary ganglion
Name the nerve, which carries facial preganglionic parasympathetic fibers from the main facial trunk.
Chorda tympani of the Facial trunk
Name two branches of the facial nerve, which carry preganglionic parasympathetic fibers.
Greater Petrosal nerve of the Genicular ganglion of Facial nerve
Chorda tympani of the Facial trunk
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
c. Greater petrosal nerve
know sequence
Name the branch of the glossopharyngeal nerve, which carries preganglionic parasympathetic fibers.
Tympanic branch of Glossopharyngeal Nerve
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. Genicular ganglion
Genicular ganglion is not solely parasympathetic
Don’t forget ciliary ganglion is also included
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
d. prepuce
The pulmonary branch of the vagus is bronchiodilator. True/False
False. Bronchioconstrictor
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.
Greater Petrosal Nerve of Genicular ganglion of Facial Nerve
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.
Chorda tympani of Facial nerve trunk
The disproportion or ratio of the sympathetic nervous system between the preganglionic and postganglionic fibers is____.
Much Wider 1:196
