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Flashcards in Autonomic Nervous System Deck (16)
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1) 3 Components of the Nervous System? 2) Which component has 2 subcategories

1) Central vs. Peripheral vs. Autonomics2) Autonomics = Parasympathetic vs. Sympathetic


Which nervous system component does the following: A-DILATES pupil B- Stops Saliva secretionC-Constricts BronchiD- Converts glycogen --->GlucoseE-STOPS Bladder ContractionsF- Releases BileG- Erection, Relaxes Uterus H- Constricts coronary vessels i = systemic/ peripheral blood vessel diameter J= INC renin secretion

-Both Autonomic Children-A-SYMPATHETICB-SYMPATHETIC C-ParaSympathetic D-SYMPATHETICE- SYMPATHETIC F- ParaSympathetic G- ParaSympathetic H- ParaSympathetic i= SYMPATHETIC J= SYMPATHETIC


1) Sympathetic NS origins from which spinal segments exactly? 2) what about ParaSympathetic NS? [2]

1) Sympathetic Preganglionic Neurons are in T1-L2 [IML lateral horns] of spinal cord gray matter2) ParaSYmpathetic Preganglionic Neurons start from Cranial nerves (3,7,9,10) OR Spinal segments S2 --> S4


1) Preganglionic fibers from SYMPATHETIC NS leave spinal cord thru the ____ rami (____) and then housed in the ___ _____, enter the ____ _____2) Where are Ganglionic neurons located for each system? [2]3) What is the passage for SYMPATHETIC POSTganglionic fibers 4) SYMPATHETIC Preganglionic fibers are ____& ______ hile5) What does WIGO mean?

1) SYMPATHETIC NS Preganglionic fibers leave spinal cord thru WHITE RAMI (myelin)..and then (housed in the VENTRAL Ant. ROOT) soon ENTER SYMPATHETIC CHAIN GANGLION/Trunk [SCGT] ---(then)----> *become White communicating ramus*-----------------------------------------------------------------------------2) Ganglionic neurons = ºWITHIN [SCGT] OR collateral ganglion outside [SCGT] = SYMPATHETIC ///// ºPeripheral ganglia=PARAsympathetic------------------------------------------------------------------------------------3) POSTganglionic fibers leave sympathetic trunk thru GRAY RAMI (as *Gray communicating ramus*) & pass thru spinal nerve again b4 actually terminating in organ-----------------------------------------------------------------------------------4) SYMPATHETIC Preganglionic fibers are SHORT & myelinated 5) WIGO = White in (PreG in to SCGT) and Gray Out (PostG out of SCGT)


A: [T or F] Sympathetic NS Preganglionic fibers can DIRECTLY simulate epi/NorEpi from Adrenal MedullaB: Sympathetic division is responsible for the _____ ____ toneC: [T or F] Sympathetic PREganglionic fibers tend to ascend or descend within the [Sympathetic Chain Ganglion Trunk] b4 actually synapsing

A: TRUE!B: Sympathetic division is responsible for [Vasomotor sympathetic tone] C: TRUE!


1) Which ganglia does the PREganglionc neurons of the PARAsympathetic NS synapse with? How does this effect the length of these fibers? 2) Are these fibers myelinated or nah? 3) Which 3 Ganglion does VAGUS CN10 travel to?

1) Peripheral ganglia located NEAR target organ [WHich is Why these PREganglionc PARAsympathetic fibers are so long] 2) PreGanglionic for BOTH systems are Myelinated3) Thoracic, Abdominal & Cardiac ganglia


A: Where would you find the Superior Cervical ganglion of the ____ Nervous system? ------------------------------------------------------------------------------------B: Why should you find NO white rami below L2?

---SYMPATHETIC NS*Behind the VAGUS CN10 n. ------------------------------------------------------------------------------------B: Sympathetic input from spinal cord stops at L2 = no white rami below that---> only chain and gray rami


What are the Splanchnic Nerves? [3]

STRANGE Group of Nerves found in Thoracic [T5-T10], Sacral and Pelvic regions. 1. Thoracic Splanchnic= Sympathetic NS BUT have PARASympathetic qualities (don't synapse at SCGT & have LONG PREganglionic n.) º[Sacral Splanchnics also=Sympathetic]2. Pelvic Splanchnic= PARASympathetic NS


1: Which "road map guidance" does the Sympathetic fibers use to get to their targets? 2: What is the ganglion impar?

1: Sympathetic fibers follow Blood Vessels & peripheral nerves to their targets 2: Gang impar= The only randomly detached unpaired ganglion


1) Where is the Celiac Ganglion located in the body? [3]2) Is this ganglion Sympathetic or PARAsympathetic?

1) INSIDE DIAPHRAGM, In front of T12 Vertebrae & under the heart 2) MOSTLY SYMPATHETIC (from grtr and lesser splanchnic n.)


A: Because there is no ___ ____ in the cervical cord, how do SYMPATHETIC preganglionic fibers get to the face? B: What functions do they do in the face? [3]

A: Since no LATERAL HORN (IML) in cervical cord sympathetic preganglionics ascend from thoracic cord to synapse in Superior/Middle/Inferior cervical chain ganglia B: Dilator Pupillae, Eyelid Tarsal muscle, Facial sweating *Tarsal HELPS [levator palpebrae superioris] elevate eyelid*


1- What is Horner's Syndrome caused by? 2-Name the 4 Major sx and what they mean3-What cancerous tumor is known for causing Horner's Syndrome?

1- Lesioned SYMPATHETIC NS on same side of body as the sx tht appeared------------------------------------------------------------------------------------2-A: Ptosis=Drooping Eyelid B: Miosis= Constricted pupil C: Anhidrosis = Inability to Sweat D: Flushed Red Skin------------------------------------------------------------------------------------3. PANCOAST TUMOR = Apex Lung tumor pressing Against inferior cervical sympathetic ganglion


1) Which Central Nervous System , Rounds UP the lens and constricts the pupil? 2) POSTganglionic fibers from Sympathetic [______] releases ____ @ target organs.... while PARAsympathetic releases ______

1) PARASYMPATHETIC NS2) POSTganglionic fibers from Sympathetic[Adrenergic] releases NE/Epi .....while PARAsympathetic[Cholinergic] releases Acetylcholine


1) Which nerve is responsible for relaying Lacrimal Gland SENSATION? Give an example2) What n. induces TEARS for Lacrimal Gland? What does this nerve run with to get there?

1) [Trigeminal/CN5B1^Opthalmic>>Lacrimal n.] Relays SENSATION for Lacrimal Gland (ex. being stabbed in eye with hot comb) 2) TEARS= Facial CN7^Greatr Petrosal n. which runs with CN5 Zygomatic Branch


Sphincter Pupillae [function:____] is related to the ____[Afferent/EFFerent] Limb of the Pupillary Light Reflex and is innervated CN__ via the ____ ganglion. *What muscle does the Accommodation/focusing of the eye and what CN is it innervated by?

Sphincter Pupillae [function: CONSTRICTION] is related to EFFERENT Limb of the Pupillary Light Reflex and innervated by CN3^Occulomotor via Ciliary Ganglion. *Ciliary Muscle does the Accomodation/Focusing {Also by CN3^Occulomotor


A: What 3 Cranial Nerves are housed in the Cavernous sinus of the ____Bone ? B: Where is this Cavernous Sinus located?

A: CN 3, 4 and 6! *Cavernous Sinus of the Sphenoid Bone*B: C.S. are on BOTH side of the [Sella Tursica]