CN V1

Question 1

CNV1

Function

Answer 1

GSA

Sensation of

Scalp

Forehead

Eyelids

Eye

Nose

Mucous membrane of nose and sunuses

Question 2

CN V1

Origin

Associated nuclei

Answer 2

Target tissues, via trigeminal (semilunar) ganglion

Trigeminal sensory nucleus

Question 3

3 major branches of Opthalmic Division

Answer 3

Frontal n

Lacrimal n

Nasociliary n

Question 4

Frontal n

type

subdivisions

Answer 4

• CN V1–> Frontal n
• ALL SENSORY
  
  • Supraorbital n
  • Supratrochlear n

Question 5

Nasociliary n

Subdivisions

Answer 5

• CN V1–> Nasociliary n
  
  • Posterior ethmoid n
  • Anterior ethmoid n
    
    • External nasal n
  • Infratrochlear n
  • Long ciliary nn(2-3 branches)
  • Short ciliary nn (8-12 branches) via ciliary ganglion

Question 6

Frontal n. subdivisions functions

Answer 6

• Supraorbital n.
  
  • Frontal sinus, skin superior to lateral orbit, and lateral upper eyelid
• Supratrochlear n.
  
  • Frontal sinus, skin superior to medial orbit and medial upper eyelid

Question 7

Lacrimal n. function

Answer 7

• Conjuctiva
• lacrimal gland
• Skin of upper eyelid
• Parasympathetic hitch-hikers
  
  • Communicates with zygomatic n of V2
  • CN 7 hitch hikes
  • Associated with Pterygopalatine ganglion

Question 8

Nasociliary subdivisions

Answer 8

• Posterior ethmoid
• Anterior ethmoid
  
  • External nasal
• Infratrochlear n
• Long ciliary
• SHort ciliary

Question 9

Posterior ethmoid

Function

Path

Answer 9

Ethmoid sinus, sphenoid sinus

Posterior ethmoid foramen

Question 10

Anterior ethmoid

Function

Path

Answer 10

Ethmmoid sinus Nasal cavity

Ant ethmoid foramen

Question 11

External nasal

Answer 11

Apex of nose

Question 12

Infratrochlear n

Answer 12

• Conjuctiva,
• Lacrimal structures,
• Eyelids
• Bridge of nose,

Question 13

Long Ciliary

Answer 13

Sclera and cornea

Sympathetic runs along with it

Question 14

Short Ciliary

Answer 14

• Ciliary body and iris
• Hitch hikes with CN3, edinger-westphal
  
  • Sympathetics