Autonomic Nervous System Flashcards Preview

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Flashcards in Autonomic Nervous System Deck (16)
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1
Q

1) 3 Components of the Nervous System? 2) Which component has 2 subcategories

A

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

2
Q

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

A

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

3
Q

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

A

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

4
Q

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?

A

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] β€”(then)β€”-> become White communicating ramus—————————————————————————–2) Ganglionic neurons = ΒΊWITHIN [SCGT] OR collateral ganglion outside [SCGT] = SYMPATHETIC ///// ΒΊPeripheral ganglia=PARAsympatheticβ€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”β€”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)

5
Q

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

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

6
Q

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?

A

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

7
Q

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

A

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

8
Q

What are the Splanchnic Nerves? [3]

A

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.) ΒΊ[Sacral Splanchnics also=Sympathetic]2. Pelvic Splanchnic= PARASympathetic NS

9
Q

1: Which β€œroad map guidance” does the Sympathetic fibers use to get to their targets? 2: What is the ganglion impar?

A

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

10
Q

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

A

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

11
Q

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

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

12
Q

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?

A

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

13
Q

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

A

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

14
Q

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?

A

1) [Trigeminal/CN5B1^OpthalmicΒ»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

15
Q

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?

A

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

16
Q

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

A

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