Peripheral&AutonomicNS-Exam I

Question 1

Which root of the spinal cord receives Sensory (afferent) signals?

Answer 1

Dorsal Root

Question 2

Which root of the spinal cord sends out Motor (efferent) signals?

Answer 2

Ventral Root

Question 3

When I say “ganglion” you say:

Answer 3

“peripheral” “go nerves!”

Question 4

What is going on in an Sensory ganglion?

Answer 4

A group of sensory nerve CELL BODIES

Question 5

What is going on in an Autonomic ganglion?

Answer 5

A group of SYNAPSES!

Question 6

When I say “Nucleus” you say:

Answer 6

“Central” “go nerves!”

Question 7

Where is the cell body of a motor nerve?

Answer 7

In the CNS!

Question 8

What are the two types of neurons that have ganglion? What separates the two?

Answer 8

Sensory Neurons and Autonomic Neurons have ganglion. A Sensory Ganglion is a CELL BODY whereas an Autonomic Ganglion is a SYNAPSE

Question 9

What is happening in a CNS nerve nucleus?

Answer 9

Synapses AND Cell Bodies (UNIPOLAR neurons, I get it!!)

Question 10

What are the two parts to a motor nerve pathway?

Answer 10

Upper Motor Neuron synapses with Lower Motor Neuron

Question 11

What are the three parts to a sensory nerve pathway?

Answer 11

1st order neuron synapses with a 2nd order neuron in the Spinal Cord, then synapses with a 3rd order neuron to get to the Brain.

Question 12

What are in 1st order sensory ganglion in the PNS? Cell bodies or synapses?

Answer 12

CELL BODIES

Question 13

Where does a sympathetic signal HAVE to originate from?

Answer 13

INTER-MEDIO-LATERAL cell columns of T1—L2

Question 14

What vertebral levels do we find the sympathetic chain?

Answer 14

EVERY LEVEL

Question 15

What are the five rules of the Sympathetic NS?

Answer 15

1)Originates T1-L2 2)Always uses the Chain 3)Synapse in Chain/”Pre-Vertebral” ganglion 4.Innervates Somatic & Visceral Smooth Muscle 5. Use ACh at ganglion &&& NorEpi at Neuron

Question 16

What are the five rules of the Parasympathetic NS?

Answer 16

1. ONLY CN III, VII, IX, X 2. Never Uses the Chain 3. Synapse can be in the CN ganglion or near the organ 4.ONLY visceral Smooth Muscle 5. Only uses ACh

Question 17

What are the Parasympathetic nerves that go directly to organs that the Sympathetic system can “hitch a ride” on?

Answer 17

Splanchnic Nerves

Question 18

What are the four CNs with Parasympathetic activity? You should DOMINATE THIS.. Also, what is the other source of Parasympathetic Activity in the Sacrum?

Answer 18

III Oculomotor, VII Facial, IX Hypoglossal, X Vagus…Sacral Nerves S2, S3, S4 and they travel on the Pelvic Splancnic

Question 19

Which parasympathetic ganglion does CN III use? What does it do?

Answer 19

Ciliary Ganglion! Constrict the eye, accommodates lens

Question 20

Which two parasympathetic ganglia does VII use? Think Location! (What are the functions?)

Answer 20

Pterygopalatine (Cry Lacrimal, Snot mucous of nasal cav, Spit oral glands) & Submandibular (Spit submand, sub ling)

Question 21

What parasympathetic ganglion does IX use? (Function?)

Answer 21

OTIC ganglion (Parotid Gland Increase Secretions SPIT)