Autonomic NS Flashcards by Chad Findlay

There are at least two neurons, which interpose between the central to somatic effectors T/F?

true

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The splanchnic component of the ans innervates all of the following except?

Striated muscle

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Axons of the primary neurons of the ans are usually unmyelenated and pass to the peripheral ganglia T/F?

False

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The disproportion between preganglionic and postganglionic neurons is lesser in the parasympathetic system than the sympathetic T/F?

True

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The disproportion between pre ganglionic and postganglionic nuerons of the parasympathetic is?

1:15-20

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What has the greatest disproportion between preganglionic and postganglionic neurons?

sympathetic NS

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The visceral afferent paths resemble somatic efferent (afferent?) paths. T/F

False

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The parasympathetic preganglionic efferent fibers emerge through all of the following except?

The first sacral nerve

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The sympathetic preganglionic efferent fibers appear through all thoracic and first, second and/or third lumbar spinal nerves, which is known as _________ out flow.

Thoracolumbar

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What nerves are included in the symp preganglioniic efferent fibers outflow?

T1-T12, L1-L3

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The enteric NS contains all of the following reflex pathways except?

STRIATED MUSCLE CONTRACTION
digestive enzyme secretion
peristalsis reflex
blood flow

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All of the following carries mylenated preganglionic parasympathetic axons except?

facial nerve
ACCESSORY CRANIAL NERVE
third sacral spinal nerve
TRIGEMINAL NERVE

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All of following are peripheral ganglia of the cranial part of the parasympathetic system, except?

otic ganglion
GENICULAR GANGLION
submandibular ganglion
ciliary ganglion

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Name the nerve which carries postganglionic parasympathetic fiber to the constrictor pupillae.

Short ciliary nerve

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

Chorda tympani

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

Chorda tympani and greater pretrossal

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Which of the following nerves mainly carries the preganglionic parasympathetic fibers from the main facial nerve trunk to the lacrimal gland?

posterior auricular nerve
chorda tympani
GREATER PETROSSAL NERVE
nerve to the stapedius

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

Tympanic nerve

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

GENICULAR GANG
otic gang
submandibular gang
pterygopalatine gang

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The pulmonary branch of the vagus nerve is a bronchodilator. T/F

False

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The pelvic splanchnic nerves supply vasodilator fibers to all of the follwing except? corpora cavernosa, corpus spongiosum, glans of the penis, prepuce

Prepuce

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Name the branch of the facial nerve which carries preganglionic parasympatheitic efferent fibers to control the small glands in the nasal cavity, palate, and nasal sinuses above the oral cavity?

Greater petrossal

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Name the branch of the facial nerve which carries pregang parasymp efferent fibers to control the salivary glandand lingual glands below the oral cavity

Chorda tympani

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NAme the branch of the glossopharyngeal nerve which carries parasympathetic efferent fibers to the parotid gland.

tympanic nerve

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The ratio of preganglionic neurons to post ganglionic neurons in the sympathetic NS is?

1:196

The sympathetic NS innervates all of the following except? sweat glands, ciliary body, constrictor pupillae, arrectors pilorum.

Constrictor pupillae

Name the spinal cord segment where the somata of pregang sympathetic fibers arise.

T1-T12, L1-L3

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

1.5 u to 4u

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

12 pairs

The sympathetic pregang fibers pass in the ventral spinal root as myelanated fiber. T/F

True

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

grey

Most peripheral spinal nerves contain postganglionic parasympathetic fibers. T/F

false

Peripheral autonomic activity is integrated at the brainstem which includes all of the following EXCEPt? limbic system, thalamus, hypophysis, hypothalamus

hypophysis

To reach the sympathetic ganglion, the preganglionic sympathetic fibers behave as the follwing EXCEPT? A:they synapse to nearest ganglion B:they transverse to the nearest ganglia to reach the celiac ganglion to synapse C:they transverse to the nearest ganglia and ascend or descend in the sympathetic chain to reach another ganglion for synapse. D: they transverse the sympathetic chain gali and reach the effector organ and synapse.

The internal carotid plexus communicated laterally with all of the following EXCEPT. pterygopaltine ganglion ciliary ganglion tympanic branch of glossopharyngeal nerve abducent nerve

ciliary ganglion

name the nerve which sends vasomotor rami to the hypophysis cerebri

internal carotid plexus

Name the artery on which the right and left sympathetic systems connects eachother in the cranial cavity.

internal carotid artey

Name the sympathetic nerve which supplies the carotis body and pharyngeal plexus.

laryngopharyngeal branches

the largest sympathetic cardiac nerve arises from the ______ganglia.

Middle cervical ganglion

Name the sympathetic nerve which supplies the otic ganglion and the genicular ganglion.

Anterior branches of the superior cervical

Name the ganglia which sends branches to enclose the vertebral artery.

Middle cervical

Name the spinal cord segments which send the pregang sympathetic fibers to the head and neck

T1-T5

Name the sympathetic nerve which loops the first part of the subclavian artery.

Cervico thoracic

The thoracic sympathetic trunk passes through the ______to become the lumbar sympathetic trunk

Crus of the diaphragm

``` The thoracic sympathetic trunk passes through or posterior to all of the following structures except? Med arcuate ligament lateral arcuate lig right crus of diaphragm left cruz of diaphragm ```

Lateral arcuate ligament

The grater splanchnic nerve is formed by branches from the T5-T9 or T10 ganglia. TF

True

Name the thoracic sympathetic ganglia which form the lesser splanchnic nerve.

T9-T10

The lowest splanchnic nerve enters the abdominal cavity thorugh?

the crus of the diaphragm

How many lumbar sympathetic ganglia are in the human body on each side?

All of the following are correct description of the lumbar sympathetic ganglia and trunk except. locared in retroperitoneal space located anterolateral to the lumbar vertebra located along the lateral margin of psoas major superiorly it is posterior to the medial arcuate ligament

located on the lateral side of psoas major (should be medial).

``` The first lumbar splanchnic nerve joins the following plexuses except. celiac plexus intermesenteric plexus renal plexus superior hypogastric plexus ```

superior hypogastric plexus

Name the nerve which joins the hypogastric nerve from the lumbar sympathetic chain ganglia

4th lumbar

``` Name the artery on which the lower lumbar splanchnic nerves form a plexus. common illiac artery internal illiac artery external illiac artery obturator nerve ```

common illiac artery

the pelvic sympathetic trunk is located medial to the ventral sacral foramina. T/F

TRue

Which of the folowing is not a correct description of the pelvic sympathetic truck with its ganglia? It sends grey rami communicantes to the sacral and coccygeal spinal nerves it lies laterally to the ventral sacral foramina it has four or five interconnected ganglia inferiorly the right and left trunk converge to the ganglion impar

it lies laterally to the ventral sacral foramina

The ganglion impar is part of the parasymapthetic nervous system. TF

false

``` The heart receives sympathetic fibers from? T1-5 T10-L2 T9-10 T8-L1 ```

T1-T5

``` The segmental sympathetic nerves to the kidneys are? T11-L2 T11-T12 T1-T5 T10-L1 ```

T10-L1

Name the two interconnected ganglionated plexuses in the enteric NS

Myenteric and submucosal plexuses

The submucosal plexus extend from _________to the______.

Stomach to the internal anal spinctner

``` Which of the following extends from the stomach to the internal anal sphincter in the enteric NS Celiac plexus intermesenteric plexus submucosal plexus myenteric plexus ```

Submucosal plexus

What do the enteric sensory neurons monitor?

Wall tension and intestinal content