A3 Q1

• Fossa cranii anterior and orbita

  • foramen ethmoidale anterius
  • a. ethmoidalis anterior
  • v. ethmoidalis anterior
  • n. ethmoidalis anterior

  
• a. ethmoidalis anterior

  • Branch of a.opthalmica, supply the anterior ethmoid cells, dura mater of the anterior cranial fossa, anterior part of the nasal septum, anterior part of the lateral wall of the nasal cavity

  
• Rami nasalis interni

  Mucosa of the anterior portions of the septum nasi (rami nasales mediales) and lateral nasal wall (rami nasales laterales)
• Ramus nasalis externus

  Skin of the nose (courses under the musculus nasalis)
• Fossa cranii anterior and cavitas nasi ossea

  Foramina cribrosa

  
• N.nasociliaris

  Branch of n.ophthalmicus, Sensory: Cellulae ethmoidales, sinus sphenoidalis, anterior cavitas nasi, superficial nose, upper eyelid, saccus lacrimalis, and eye

  
• Fossa cranii media and orbita

  • canalis opticus
  • Fissura orbitalis superior

  
• n. oculomotorius

  • extraocular muscles (except lateral rectus and superior oblique)
  • ciliaris and sphincter pupillae

  
• n. trochlearis

  • superior oblique
• n. abducens

  • lateral rectus
• n. ophthalmicus

  • Branch of nervus trigeminus, going in upper parts of the face and giving also innervation for the upper parts of the nasal cavity and the nose

  
• v. ophthalmica superior

  • Tributary of vv. Orbitae, drains the labium superius (face)
• Fossa cranii media and fossa pterygopalatina

  foramen rotundum

  
• n.maxillaris

  • Branch of the nervus trigeminus, innervates the middle parts of the skin of the face, and from inside the the nasal cavity, the bottom of the oral cavity, the orbit and some of the nasal sinuses in this mid part
• Fossa cranii media and fossa infratemporalis

  foramen ovale

  
• n. Mandibularis

  • Motor: muscles of mastication, mylohyoid, anterior belly of digastric, tensor veli palatini, tensor tympani. Sensory

  
• Fossa cranii media and Canalis facialis

  Hiatus canalis nervi petrosi majoris

  
• n.petrosus major

  • Branch of nervus facialis, carries preganglionic parasympathetic fibers, muscles of mastication, mylohyoid, anterior belly of digastric, tensor veli palatini, tensor tympani. Sensory to gingiva, mucosa, and glands of the posterior 2/3 of the hard palate

  
• Fossa cranii media and cavitas tympani

  Hiatus canalis nervi petrosi minoris

  
• n. petrosus minor

  • Branch of nervus glossopharyngeus, conveys preganglionic parasympathetic fibers from the plexus tympanicus (CN IX) to the ganglion oticum. These fibers innervate the glandulae parotidea, buccales, and labiales inferiores, with postganglionic fibers distributed via branches of CN V3

  
• a. tympanica superior

  • Branch of a. Meningea media, supplies m.tensor tympani, paries tegmentalis of cavitas tympani, stapes

  
• Fossa cranii posterior and spatium parapharyngeum

  Foramen jugulare

  
• n. glossopharyngeus

  • Parotid gland
  • Muscles of pharynx and soft palate
  • Taste from the posterior 1/3 of the tongue
  • Mucosa of tympanic cavity and pharygotympanic tube
• n. vagus

  • Organs of the neck and trunk to the level of the Cannon-Böhm point
  • Muscles of pharynx and larynx
  • Taste from the base of the tongue and epiglottis
  • Sense from the posterior portion of the external acustic meatus
• n. accessorius

  • Fibers return to vagus neve
  • Trapezius, sternocleidomastoid
• a. meningea posterior

  • Branch Arteria pharyngea ascendens, supplies dura of the posterior cranial fossa

  
• v. jugularis interna

  • Drains blood from both the exterior and inferior of the skull (including the brain)
• Canalis nervi hypoglossi

  Passes through n. hypoglossus (+ C2/C3 branches for the dura mater of the posterior cranial fossa)

  
• n. hypoglossus

  • Muscles of the tongue, geniohyoid, thyrohyoid
• C2/C3 branches

  • Sensory innervation of the dura of the posterior cranial fossa

  
• Fossa cranii posterior and auris interna

  Meatus acusticus internus
• n. facialis

  • Muscles of facial expression, stapedius, stylohyoid and posterior belly of digastric
  • Submandibular and sublingual glands
  • Lacrimal gland, glands of nasal and palatal mucosa
  • Taste from the anterior 2/3 of the tongue
  • Skin behind the external ear
• n. vestibulocochlearis

  • Hearing, balance
• a. labyrinthi

  • From arteria basilaris, supply the cochlea and vestibular system
• v. labyrinthi

  • Tributaries of sinus petrosus inferior, which connects the cavernous sinus and the internal jugular vein
• Fossa cranii posterior and canalis vertebralis

  Foramen magnum

  
• medulla oblongata/spinalis

  • Passes through foramen magnum
• radix spinalis n. accessorii

  • Passes through foramen magnum, innervates trapezius and sternocleidomastoid

  
• Fossa cranii posterior and posterior part of bassis cranii externa

  ductus endolymphaticus

  
• ductus endolymphaticus

  • From the posterior wall of the saccul, passes along the aquæductus vestibuli and ends in a blind pouch (saccus endolymphaticus) on the posterior surface of the petrous portion of the temporal bone, where it is in contact with the dura mater