Week 2 - Dry Room Flashcards
What openings do each of the cranial nerves pass through?
I - Cribriform plate II - Optic Canal III - Sup Orbital Fissure IV - '' V1 - '' V2 - Foramen Rotundum V3 - Forament Ovale VI - Sup Orbital Fissure VII - Internal Auditory Meatus (and stylomastoid foramen) VIII - IAM IX - Jugular Foramen X - '' XI - '' XII - Hypoglossal Canal
From where does each cranial nerve arise?
I - Olfactory Bulb II - Optic Chiasm III - Midbrain IV - Posterior Midbrain V - Pons VI - Pontomedullary Junction VII - '' VIII - '' IX - Medulla X - '' XI - '' XII - ''
What type of fibres are found in the 1st cranial nerve?
Special Sensory (Olfaction)
What type of fibres are found in the 2nd cranial nerve?
Special Sensory (Vision)
What type of fibres are found in Cr N III?
Somatic Motor - Extrinsic ocular muscles
Parasympathetic - Ciliaris & Constrictor Pupillae
What type of fibres are found in Cr N IV?
Somatic Motor to Sup Oblique
What type of fibres are found in Cr N V?
General Sensory
Also Motor in V3 to muscles of mastication
What type of fibres are found in Cr N VI?
Somatic Motor to Lateral Rectus
What type of fibres are found in Cr N VII?
General Sensory (middle/outer ear)
Special Sensory (Taste) - Chorda Tympani
Motor (Muscles of facial Expression)
Parasympathetic (Sublingual/Submandibular glands) - Chorda Tympani
What type of fibres are found in Cr N VIII?
Special Sensory (Vestibular & Hearing)
What type of fibres are found in Cr N IX?
Special Sensory (Taste) General Sensory Motor (Stylopharyngeus) Visceral Sensory (Carotid sinus & body) Parasympathetic (Parotid gland)
What type of fibres are found in Cr N X?
General Sensory (oro/laryngopharynx)
Motor (Most palatine and pharyngeal muscles)
Parasympathetic
What type of fibres are found in Cr N XI?
Motor to SCM and Trapezius
Also joins in Pharyngeal plexus
What type of fibres are found in Cr N XII?
Motor (tongue muscles)
Which cranial nerves have parasympathetic fibres?
III
VII
IX
X