CRANIAL NERVES/ARRANGEMENTS

Question 1

What are the components of GSA?

Answer 1

General Somatic Afferent: Somatosensory: TOUCH/PAIN/PROPRIOCEPTION/TEMPERATURE

CN: 5, 7, 9, 10

Question 2

What are the components of GVA?

Answer 2

General Visceral Afferent: VISCERAL INFO; carotid/heart rate/etc

CN: 9, 10,
THINK VISCERAL ORGANS; GI, AUTONOMIC

Question 3

What are the components of SSA?

Answer 3

Special Somatic Afferents: SPECIAL SENSES; sight, sound, balance

CN: 1, 2, 8

Question 4

What are the components of SVA?

Answer 4

Special Visceral Afferent: Taste, Smell

CN: 7 (2/3) 9, 10 (the palate)
THINK VISCERAL ORGANS; GI - Taste and Smell

Question 5

What are the components of GSE?

Answer 5

General Somatic Efferent: Tongue, Eyeball

CN: 3, 4, 6, 12

Question 6

What are the 7 constitute groups of the BS?

Answer 6

GSA, GVA (autonomic), SSA, SVA (SS = senses)

GSE (Muscles of Special Senses - Eye/Tongue), SVE (brachial pouches), GVE (autonomic)

Question 7

What is the organization of the 7 constitute groups from medial to lateral?

Answer 7

GSE (eyeball/tongue) ,SVE (branchial pouches), GVE, GVA (autonomic)/SVE (taste), GSA, SSA/SVE (smell)

Question 8

Efferent Complex: Constitutes

Answer 8

GSE, SVE, GVE (Most lateral)

2 Generals/2 Viscerals - GSG/SVV

Question 9

Afferent Complex: Constitutes

Answer 9

GVA/SVA(Taste), GSA, SSA/SVA (smell)

Question 10

What are the components of GVE?

Answer 10

General Visceral Efferents: Autonomic - abdominal organs

CN: 9, 10

Question 11

What are the components of SVE?

Answer 11

Special Visceral Efferents: Branchial Pouches; Muscles of Mastication, Muscles of Facial Expression, Pharynx, Larynx

CN: 5, 7, 10, 12

Question 12

What are the trigeminal nuclei and their functions?

Answer 12

There are 4 nuclei. MC SM

• Mesencephalic: (M = muscle spindle) - Proprioception
• Chief Sensory: Fine/tactile touch
• Spinal Trigeminal: Pain
• Motor Nucleus: Muscles of Mastication, Tensor Tympani

Question 13

Tensor Tympani - what is the function?

Answer 13

Tensor Tympani: is a muscle innervated by the Mandibular Branch of the Trigeminal Nerve - its function is to dampen sound.

Question 14

What is the Nucleus Ambiguus? What column does it fall under? What is its function? What CN contribute?

Answer 14

The Nucleus aMbiguus: is a motor nuclei, it is a part of the GVE (Column 3 of Motor). Its function is to assist in swallowing and prevent food from getting into the nasopharynx.

CN 9 - innervates the stylopharyngeal which raises the pharynx and larynx - allows for swallowing
CN 10 - innervates the Levator Palati - prevents the entry of food into the nasopharynx.

Question 15

What is the Solitary Nucleus: What column does it fall under? What is its function? What CN contribute?

Answer 15

The Solitary Nucleus is a Sensory body of cells that are involved with TASTE and AUTONOMIC SENSATION.

The Rostral part: TASTE - CN 7, 9, 10 (epiglottis, pharynx)
The Caudal part: Autonomic Sensation/Sensory:
10 - Heart and Abdominal Viscera
9 - Carotid Body and Sinus

Question 16

What are the branches of the Facial Nerve?

Answer 16

Golden Sarina Chuckles Ten Zombies Bit My Dog

Greater Petrosal - Lacrimation
Stapedius: Sound Dampening
Chorda Tympani: Taste

Exit the Stylomastoid Foramen

Temporal
Zygomatic
Buccal
Mandibular
Cervical

Question 17

What muscular innervations are given by the Vagus Nerve?

Answer 17

Mostly Autonomic

Some Skeletal: soft palate, pharynx, larynx, UPPER esophagus, and 1 TONGUE MUSCLE*******

Question 18

What are the sensory innervations of the Vagus?

Answer 18

PS: heart, abdominal organs

Somato-Sensory: pharynx, larynx, esophagus