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Neuroanatomy

Brainstem & cranial nerves (wk. 4)

QuestionAnswer
What 3 parts make up the brain stem? Medulla oblongata, pons, & midbrain
_____ nerves arise from the brainstem to supply mostly the face, head, & associated structures. Cranial nerves
What part of the brainstem has pyramids and olives? Medulla
What is the most inferior portion of the brainstem? Medulla
What 2 major pathways cross in the medulla? Upper motor neuron & deep sensibility pathways
What is the diffuse area in the brainstem with small nuclei & fibers, that is involved in sympathetic & parasympathetic functions? Reticular Formation
The _______ aids in maintaining appropriate levels of consciousness & alertness and monitors what sensory stimuli gets up to conscious levels. Reticular Activating System
Solitary Tract & Nucleus receives taste fibers from these 3 cranial nerves. 1. VII Facial 2. IX Glossopharyngeal 3. X Vagus
What are 2 main functions of the Vestibulocochlear Nerve? 1. Balance & equilibrium 2. Hearing
What is the name of the 8th cranial nerve? Vestibulocochlear Nerve (VIII)
Lesions of the Vestibulocochlear Nerve can lead to___. Vertigo, nystagmus, vomiting, hearing loss
This nerve has functions including: taste (post. 1/3 of tongue), sensory to tympanic cavity, auditory tubes, & soft palate, and motor to stylopharyngeus muscle. Glossopharyngeal Nerve (IX)
What cranial nerve is responsible for the gag reflex? Glossopharyngeal Nerve (IX)
What is the only cranial nerve to leave the head & neck? Vagus (X)
Which cranial nerve is responsible for phonation (speaking) & swallowing? Vagus (X)
Which cranial nerve provides motor function to the trapezius & SCM muscles? Accessory (XI)
Which cranial nerve is responsible for providing motor function to the muscles of the tongue (except palatoglossus)? Hypoglossal (XII)
Injury to this cranial nerve can cause deviation of the tongue. Hypoglossal (XII)
Injury to this cranial nerve will impair one's ability to raise their shoulders and rotate their head. Accessory (XI)
The ___________ receives taste fibers from the Facial, Glossopharyngeal, and Vagus nerves. Solitary Tract and Nucleus
The ___________ is involved in the afferent autonomic limb of visceral reflexes of the cardiovascular and gastrointestinal systems. Solitary Tract and Nucleus
Tumor originating from Schwann cells of the vestibular nerve that compresses the cochlear nerve resulting in tinnitus and loss of hearing. Acoustic Neuroma
Lesions of this cranial nerve can lead to inappropriate blood pressure adjustments (dysautonomia). Glossopharyngeal (IX)
Created by: ElisaDanger
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