CN5 Flashcards
Identify each branch of the fifth cranial nerve arising from its ganglion?
Ophthalmic nerve, maxillary nerve, and mandibular nerve.
The fifth cranial nerve is functionally referred to as the?
Great sensory nerve of the face.
What is the exit site from the cranial vault for each division of the fifth cranial nerve?
Ophthalmic- superior orbital fissure
Maxillary- foramen rotundum
Mandibular- foramen ovale
What location will each branch of the fifth cranial nerve pass into upon exit from the cranial vault?
Ophthalmic- orbit
Maxillary- pterygopalatine region
Mandibular- infratemporal region
At its apparent origin cranial nerve 5 conveys which classifications of neural pathways?
Somatic afferent pathway and branchial efferent pathway.
Peripheral sensory processes of the fifth cranial nerve are primarily derived from pseudounipolar afferent neuron cell bodies located in which ganglion?
Semilunar ganglion, Gasserian ganglion, and trigeminal ganglion.
Central sensory processes carried in the fifth cranial nerve synapse with secondary sensory neuron cell bodies in what locations?
Mainly in the principal sensory nucleus, some in the spinal trigeminal nucleus
What muscles are innervated by branchial efferent fibers conveyed in the fifth cranial nerve?
Temporalis, masseter, medial pterygoid, lateral pterygoid, mylohyoid, anterior belly of the digastric, tensor tympani, and tensor veli palatini.
What are the muscles of mastication?
Temporalis, masseter, medial pterygoid, lateral pterygoid.
The fifth cranial nerve carries peripheral sensory processes from endings located in the muscles of mastication and the extrocular muscles to pseudounipolar cells located in which nucleus?
Mesencephalic nucleus of the trigeminal nerve.
Afferent neurons within the mesencephalic nucleus that are associated with sensation from the muscle of mastication will synapse at what locations?
Trigeminal motor nucleus or spinal trigeminal nucleus.
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