Neuro - 5 - Autonomic Ns

Front 1

SYMPATHETIC characteristics

Back 1

pre-ganglionic neurons originate in lateral horns of T1 – L2

Short pre-ganglionic fibers

Long-post-ganglionic fibers

Use Acetylcholine in synapse
Use Norepinephrine on target cells

Front 2

Where are sympathetic pre-ganglionic neurons located

Back 2

lateral horns of T1 – L2

Front 3

Types of Sympathetic Ganglion

Back 3

Superior Cervical Ganglion - innervates cranial viscera

Stellate Ganglion - Innervates chest viscera

Celiac Ganglion - Innervates upper abdominal viscera

Superior Mesenteric Ganglion - Innervates lower abdominal viscera

Inferior Mesenteric Ganglion - innervates pelvis viscera

Front 4

Superior Cervical Ganglion

Back 4

Sympathetic ganglion that innervates cranial viscera

Front 5

Stellate Ganglion

Back 5

Sympathetic ganglion that innervates chest viscera (ie: heart & lungs)

Front 6

• Celiac Ganglion

Back 6

Sympathetic ganglion that innervates upper abdomen viscera

Front 7

• Superior Mesenteric Ganglion

Back 7

Sympathetic ganglion that innervates lower abdomen viscera

Front 8

• Inferior Mesenteric Ganglion

Back 8

Sympathetic ganglion that innervates pelvis viscera

Front 9

Parasympathetic Characteristics

Back 9

pre-ganglionic neurons that run along w/ CN’s-3, 7, 9, 10

long pre-ganglionic fibers
short post-ganglionic

Uses Acetylcholine in synapse and Acetylcholine on target cell

Front 10

Types of Parasympathetic Ganglion

Back 10

Ciliary Ganglion - innervates pupil constriction & lens accomodation via Short Ciliary Nerve of CN III

Pterygopalatine Ganglion - innervates lacrimal gland via Greater Petrosal Nerve of CN VII

Submandibular Ganglion - innervates submandibular sublingual glands via Chorda Tympani Nerve of CN VII

Otic Ganglion - innervates parotid salivary gland via Lesser Petrosal Nerve of CN IX

Front 11

Types of Parasympathetic Nuclei

Back 11

Edinger-Westphal Nucleus in the midbrain (CN III)

Superior Salvitory Nucleus in the pons (CN VII)

Inferior Salvitory Nucleus in the medulla (CN IX)

Dorsal Motor Nucleus in the medulla (CN X)

Front 12

Ciliary Ganglion

Back 12

Parasympathetic Ganglion of CN III

innervates pupil constriction & lens accomodation via Short Ciliary Nerve

Front 13

Pterygopalatine Ganglion

Back 13

Parasympathetic Ganglion of CN VII

innervates lacrimal gland via Greater Petrosal Nerve

Front 14

Submandibular Ganglion

Back 14

Parasympathetic Ganglion of CN VII

innervates submandibular sublingual glands via Chorda Tympani Nerve

Front 15

Otic Ganglion

Back 15

Parasympathetic Ganglion of CN IX

innervates parotid salivary gland via Lesser Petrosal Nerve

Front 16

Constriction of Pupillae Muscles

Back 16

Parasympathetic stimulation

ACh stimulation

Causes circular smooth muscles of iris sphincter to contract

Pupils constrict

Front 17

Dilation of Pupillae Muscles

Back 17

Sympathetic stimulation

NE stimulation

Causes radial smooth muscles to contract

Pupils dilate

Front 18

Accommodation - Near Focusing of Lens

Back 18

Parasympathetic stimulation

ACh stimulation by CN III

Ciliary Nerve stimulates Ciliary muscles to contract
Causes suspensory ligaments to relax
Causes lens to relax
Near vision possible

ALSO
Adduction/Convergence of eyeball occurs through innervation of extraocular muscles by CN III, IV, VI

ALSO
Constrict pupils to increase depth of field by parasympathetic innervation of iris sphincter