Flashcards in Module Exam 5: Cranial Nerves Deck (106)
Part of the peripheral nervous system. Written down in roman numerals.
Enumerate all the Cranial nerves in order
Olfactory, Optic, Oculomotor, Trochlear, Trigeminal, Abducens, Facial, Vestibulocochlear, Glossopharyngeal, Vagus, Spinal accesory & Hypoglossal
Cranial nerves that are extensions of teleencephalon
Olfactory & Optic
Cranial nerves that exit from Midbrain
Oculomotor & Trochlear
Cranial nerves that exit from pons
Trigeminal, Abducens, Facial & Vestibulocochlear
Cranial nerves that exit from Medulla
Glossopharyngeal, Vagus, Spinal accessory & Hypoglossal
What are the sensory nuclei of the Trigeminal nerve
Principal sensory, Mesencephalic & Spinal trigeminal
What are the parts of the motor nucleus of the Trigeminal nerve
Motor & Sensory part
Receives information about deep/crude touch, pain and temperature from the ipsilateral face
Spinal Trigeminal nucleus
Spinal Trigeminal nucleus is located in
CNs __, __ & __ also convey pain information from their areas to the spinal trigeminal nucleus.
VII, IX & X
A group of second order neurons which have cell bodies in the caudal pons. Receives information about discriminative sensation and light touch of the face as well as conscious proprioception of the jaw via _________ neurons.
Principal sensory nucleus. First order neurons.
In PSN, most of the sensory information crosses the midline and travels to the __________ nucleus of the thalamus via the ___________.
Contralateral Ventral PosteroMedial. Ventral Trigeminothalamic Tract.
In PSN, information from the oral cavity travels to the __________ nucleus of the thalamus via ___________.
Ipsilateral Ventral PosteroMedial. Dorsal Trigeminothalamic tract.
Involved in the proprioception of the face, that is, the feeling of position in the muscle. Unlike many nuclei within the CNS, this nucleus contains no chemical synapses.
The electrically coupled neurons of the mesencephalic nucleus are __________ receiving proprioceptive information from the mandible, and sending projections to the ________ to mediate monosynaptic __________.
Pseudounipolar cells. Motor trigeminal nucleus. Jaw jerk reflexes.
The only structure in the CNS to contain the cell bodies of a primary afferent, which are usually contained within _______.
Mesencephalic nucleus. Ganglia.
Trigeminal nerve's sensory distribution
Contains motor neurons that innervate muscles of the first branchial arch, namely the muscles of mastication, the tensor tympani, tensor veli palatini, mylohyoid, and anterior belly of the digastric.
Trigeminal motor nucleus
Trigeminal motor nucleus is located in
CN V motor innervation: muscles of mastication & others
-Masseter, temporalis, medial pterygoid & lateral pterygoid
-Tensor veli palatini, mylohyoid, anterior belly of digastric & tensor tympani
Controls the muscles of facial expression. Conveys taste sensations from anterior 2/3 of the tongue and oral cavity.
Supplies preganglionic parasympathetic fibers to several head and neck ganglia
The motor part of the facial nerve arises from
Facial nerve nucleus in the pons
The sensory and sympathetic parts of the facial nerve arise from
Facial nerve forms the ________ prior to entering the facial canal
Provides parasympathetic innervation to several glands, including the nasal, palatine, lacrimal and pharyngeal glands
Greater petrosal nerve
Provides motor innervation for stapedius muscle in middle ear
Nerve to stapedius
Intracranial branches of Chorda tympani
Submandibular gland, Sublingual gland and special sensory taste fibers from the anterior 2/3 of the tongue