Deep Face II

Question 1

A small pyramid-shaped space that is found inferior to the apex of the orbit

Answer 1

Pterygopalatine fossa

Question 2

Borders of Pterygopalatine Fossa

Answer 2

• Anterior= maxillary tuberosity
• Posterior= pterygoid process of spenoid (lateral plate)
• Medial= perpendicular plate of palatine bone
• Lateral= opens into infratemporal fossa via pterygomaxillary fissure
• Roof= (incomplete) greater wing of spenoid
• Floor= pyramidal process of palatine bone

Question 3

Openings in Pterygopalatine Fossa

Answer 3

Superior= opens into inferior orbital fissure

Inferior= Closed except for palatine foramen

Question 4

Contents of Pterygopalatine Fossa

Answer 4

• Contents:
  
  • Maxillary (CN V₂)
  • Pterygopalatine ganglion
  • Third part of Maxillary artery

Question 5

Parasympathetic fibers to pterygopalatine ganglion are from the facial nerve (CN VII) via the

Answer 5

greater petrosal nerve

Question 6

The greater petrosal nerve joins the deep petrosal nerve to form the

Answer 6

nerve of the pterygoid canal

Question 7

The parasympathetic fibers form the greater petrosal nerve supply the

Answer 7

pterygopalatine ganglion

Question 8

The deep petrosal nerve arises form the _______ and conveys postsynaptic sympathetic fibers which join branches of the maxillary nerve via the pterygopalatine ganglion (but do not synapse there)

Answer 8

Internal carotid plexus

Question 9

Boney part of nose

Answer 9

• Nasal bones
• Frontal process of maxilla
• Nasal part of frontal bone and nasal spine
• Bony part of nasal septum

Question 10

Cartilagenous part of nose:

Answer 10

• 2 lateral cartilages
• 2 alar cartilages
• Septal Cartilage (nasal septum)

Question 11

Nasal conchae divide nasal cavity into 4 passages:

Answer 11

• Spheno-ethmoidal recess (opening of sphenoid sinus)
• Superior nasal meatus (opening of eithmoidal sinuses)
• middle nasal meatus (opening of frontal sinus)
  
  • maxillary sinus also opens into middle nasal meatus in posterior part of semilunar hiatus at the maxillary ostium (below ethmoid bulla)
• Inferior nasal meatus (opening of nasolacrimal duct)