Fossa temporalis, fossa
infratemporalis, fossa
pterygopalatina
Fossa temporalis
• Borders:
linea temporalis sup.,
arcus zygomaticus
Fossa temporalis - content
• skin
• n. auricularis magnus
• m. temporoparietalis (n.VII.)
• a., v. temporalis spf. (v. retromandibularis)
• n. auriculotemporalis
• fascia temporalis (two laminae)
• m. temporalis
• a.,v., n. temporalis prof.
Fossa infratemporalis
Borders:
Upper: crista infratemporalis
alae majoris osis
sphenoidalis
Ventral: facies
infratemporalis corporis
maxillae
Lateral: ramus mandibulae
Medial: lamina lat. proc.
pterygoidei
Dorsal: missing, styloid
septum
Fossa infratemporalis - content
Mm. pterygoidei
A. maxillaris
N. mandibularis
Plexus pterygoideus
Fossa infratemporalis
• v.ophthalmica inf. (fissura orbitalis inf.)
• n.mandibularis (foramen ovale)
• a.meningea media (foramen spinosum)
• n.alveolaris inf. (canalis mandibulae)
• n.mylohyoideus (sulcus mylohyoideus)
A.maxillaris in fossa infratemporalis
Pars pterygoidea
arteria masseterica
arteriae temporales prof.
rr. pterygoidei
arteria buccalis
Branches of the mandibular nerve in the
infratemporal fossa
• N. mandibularis
• N. buccalis
• N. lingualis
• N. alveolaris inf.
• n. mentalis
• R. mylohyoideus
• N. auriculotemporalis
Fossa pterygopalatina
• Upper wall
• Facies maxillaris alae majoris ossis sphenoidalis
• Foramen rotundum (fossa cranii media)
• Fissura orbitalis inferior (orbita)
• Medial wall
• lamina perpendicularis ossis palatini
• Foramen sphenopalatinum (cavum nasi osseum)
• Ventral wall
• tuber maxillae (foramina alveolaria)
• Dorsal wall
• Processus pterygoideus ossis sphenoidalis
• canalis pterygoideus (basis cranii externa)
• Caudally:
• Canalis palatinus major (cavum oris)
Branches of a. maxillaris –
pars pterygopalatina
Pars pterygopalatina
a. infraorbitalis
a. alveolaris sup. post.
a. palatina descendens
a. canalis pterygoidei
a. sphenopalatina
Side view of fossa pterygopalatina (passages of nerves)
(lacrimal gland)