CN V (Trigeminal) Flashcards
WHat is the largest mixed cranial N?
Trigeminal N
The trigeminal N has what 2 nuclei?
Large sensory (GSA fibers) Small motor (SVE: parasympathetic fibers)
The motor nucleus of CN V lies in pons and supplies what?
Muscles of Mastication: Temporalis Internal (medial) Pterygoid Masseter External (lateral) Pterygoid Mylohyoid Anterior belly of digastric Tensor Tympani Tensor Veli Palatini
The three parts of the sensory trigeminal nucleus are?
Mesencephalic Nucleus
Main or Principal Sensory Nucleus
Spinal Nucleus
The mesencephalic nucleus carries what?
Proprioception and is located in Midbrain
The main or principal sensory nucleus carries what?
Touch and is located in Pons
The spinal nucleus carries what?
Pain and Temperature and is located in Medulla and extends into upper cervical segments of spinal cord
CN V has 3 division that come off the trigeminal ganglion which are?
Opthalmic CNV1
Maxillary CNV2
Mandibular CNV3
THe ophthalmic division gives off the following branches which pass through superior oribital foramen?
NFL
Nasociliary
Frontal
Lacrimal
The maxillary division divides into the following branches after exiting through foramen rotundum?
PINZ Pharyngeal Infraorbital Nasopalatine Zygomatic
THe mandibular division divides into the following branches after exiting foramen ovale?
Anterior and Posterior Divisions
Before the mandibular division divides it gives off one branch which is?
Medial Pterygoid
The anterior division has the following terminal branches?
Deep temporal nerves (motor)
N to lateral pterygoid (motor)
N to masseter (motor)
Buccal N (sensory)
The posterior division has the following branches?
Lingual (sensory)
Auriculotemporal (sensory)
Inferior alveolar (sensory)
Muscular branch to mylohyoid (Motor)
What is attached to ophthalmic division of CN V (nasociliary N)?
Ciliary Ganglion
