Peripheral Nerve Anatomy Flashcards
Spinal nerves split, converge, and branch to form ___ nerves
peripheral nerves
Trigeminal nerve = CN ___
CN V
Trigeminal nerve provides majority of ___ (sensory/motor) innervation of the ___
Trigeminal nerve provides majority of sensory innervation of the face
What is of anesthetic interest with the trigeminal nerve?
Trigeminal neuralgia–can block the trigeminal nerve to relieve pain
What are the (3) nerve branches of the trigeminal nerve?
- Ophthalmic
- Maxillary
- Mandibular
Glossopharyngeal nerve = CN ___
CN IX
Glossopharyngeal nerve innervates the ___pharynx, ___ palate, ___ portion of the tongue, ___ surface of the epiglottis
Glossopharyngeal nerve innervates the oropharynx, soft palate, posterior 1/3 portion of the tongue, pharyngeal surface of the epiglottis
Glossopharyngeal nerve blocks ___ reflex and ___ (anterior/posterior) pharynx
Glossopharyngeal nerve blocks gag reflex and posterior pharynx
Superior laryngeal nerve innervates base of ___, ___ (anterior/posterior) surface of epiglottis, ___ fold, and ___ (what paired cartilage?)
Superior laryngeal nerve innervates base of tongue, posterior surface of epiglottis, aryepiglottic fold, and arytenoids
Superior laryngeal nerve can be blocked by ___
Superior laryngeal nerve can be blocked by mucosal saturation
Superior laryngeal nerve arises from ___ (superior/inferior) ganglion of the ___ nerve (what CN?)
SLN arises from inferior ganglion of the vagus nerve
SLN descends behind the ___ (internal/external) carotid artery and at the level of greater Cornu of ___ bone
SLN descends behind the internal carotid artery and at the level of greater Cornu of hyoid bone
SLN divides into ___ and ___ branches
SLN divides into internal and external branches
SLN–external branch supplies ___ muscle
SLN–external branch supplies cricothyroid muscle
SLN–internal branch pierces the ___ membrane and supplies ___ (sensory/motor) innervation to the ___ and ___
SLN–internal branch pierces the thyrohyoid membrane and supplies sensory innervation to the larynx and hypopharynx
Recurrent laryngeal nerve innervates ___ and ___
RLN innervates vocal folds and trachea
Cervical plexus innervates muscles, joints, and skin in the ___ (anterior/posterior) neck; ventral rami C__-__
Cervical plexus innervates muscles, joints, and skin in the anterior neck; ventral rami C1-C4
Brachial plexus = large network of nerves that extend from ___ through ___; innervate the ___ (upper/lower) extremity
Brachial plexus = large network of nerves that extend from neck through axilla; innervate the upper extremity
Brachial plexus is composed of what (5) things?
- Ventral rami (roots)
- Trunks
- Divisions
- Cords
- Branches
Brachial plexus ventral rami (roots) = ___ (how many?)
5
Brachial plexus trunks = ___
3
Brachial plexus divisions = ___
6
Brachial plexus cords = ___
3
Brachial plexus branches = ___
4
