Cranial nerves Flashcards
What nerves originate from the cerebrum?
Olfactory Nerve
Optic Nerve
What cranial nerve is the longest:
Trochlear nerve
Where does the occulomotor nerve originate?
The midbrain-pontine junction
Where does the trigeminal nerve originate?
The pons
What nerves originate at the medulla oblongata?
Posterior to the olive: Glossopharyngeal, Vagus and accessory
Anterior to the olive: Hypoglossal
What nerve originate from the pontine-medulla junction?
Abducens
Facial
Vestibulocochlear
List the nerves which pass through the superior orbital fissure:
Oculomotor
Trochlear
Ophthalmic
Abducens
What cranial nerve passes through the foramen rotundem
Branch 2 of the trigeminal - Maxillary
What nerves pass through the internal acoustic meatus?
Facial
Vestibulocochlear
List the nerves which pass through the jugular foramen:
Glossopharyngeal
Vagus
Accessory
What nerve passes through the optic canal/
The optic nerve
What nerve passes through the cribriform plate?
The olfactory nerve
How does the hypoglossal nerve exit the skull?
The hypoglossal canal
Where does the ophthalmic branch of the trigeminal supply?
Scalpe
Forehead
Nose
Where does CNV2 - maxiallry nerve supply?
Cheeks
Lower eye lid
Nasal mucosa
Upper lip
Upper teeth
Palate
Where does the mandibular nerve (CNV3) supply?
Anterior 2/3 of tongue
Skin on mandible
Lower teeth
Muscles of mastication
What muscle does the abducens supply?
The lateral rectus
What muscle does the trochlear supply?
The superior oblique
List the areas that the facial nerve supplies general somatic sensory to?
External ear
List the areas that the facial nerve supplies special visceral motor innervation to?
Muscles of facial expression
Note also supplies posterior belly of digastric muscle
Supplies innervation to the stapes
List the areas that the facial nerve supplies general visceral motor innervation to?
Lacrimal gland
Submandibular
Sublingual; glands
Mucus glands of mouth and nose
What is the role of the vestibulocochlear nerve>
Hearing and balance via specialised somatic sensory innervation
Sight sound and balance innervation is derived from the ___derm
Ecto
Special visceral sensory e.g. taste and smell is derived from the ____derm
Endo derm
General visceral motor relates to what muscle groups
The smooth muscles of the gut and autonomic motor
List all areas the glossopharyngeal nerve innervates:
Posterior 1/3rd of tongue sensation and taste
External ear
Middle ear cavity
Carotid body and sinus
Parotid gland
Stylopharyngeus
What muscles does the accessory nerve supply:
Trapezius
Sternocleidomastoid
What does the hypoglossus innervate?
GSM: intrinsic and extrinsic tongue muscles
What is the exception of tongue muscle not innervated by hypoglossal:
Palatoglossus
In what skull bone is the internal acoustic meatus located?
The temporal bone
