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NMS 1: PNS Quiz 1

QuestionAnswer
What is the brachial plexus formed from Ventral Primary Rami
What are true muscles Those acting directly upon the spinal column
What are true muscles innervated by The Dorsal Primary Rami
What types of neurons are in peripheral nerves -A complete complement of somatic motor, somatic and visceral sensory and sympathetic fibers -NO parasympathetic fibers
Sympathetics from superior cervical ganglion go to what nerve roots C1-4
Sympathetics from middle cervical ganglion go to what nerve roots C5-6
Sympathetics from inferior/stellate ganglion go to what nerve roots C7-8,T1
Where do the roots of the brachial plexus receive their sympathetic components As they pass between the scalene muscles
Posterior division (branches of posterior cord) of brachial plexus innervates? Extensors of the arm, forearm, wrist and fingers -Brachioradialis is an exception
Anterior division (branches of lateral and medial cord) of brachial plexus innervates? Flexors of the arm forearm, wrist and fingers
Groups from the supraclavicular branches -Those arising from the roots of the brachial plexus -Those arising from the trunks of the brachial plexus
Nerves arising from the roots of the brachial plexus -Dorsal scapular nerve (C4) C5; posterior division -Long Thoracic nerve C5,6,7 (C8); posterior division
Dorsal Scapular nerve outlet Muscle, action and test -C5 -Rhomboids major and minor -Retraction of the scapulae; full extension of arms -Position of Attention
Long thoracic nerve Outlet muscle, action and test -C5,6,7 -Serratus Anterior -Protraction of the scapulae; lateral rotation; upward rotation of scapulae -"reaching"; pushing against wall
Nerves arising from the trunks of the brachial plexus -Nerve to the subclavius C5,6; anterior division -Suprascapular nerve C5 to supraspinatus Anterior division -Suprascapular nerve C5,6 to infraspinatus Anterior division
Nerve to subclavious Outlet muscle, action and test -C5,6 -Subclavius -protection of subclavian artery; depression of clavicle -NO TEST
Suprascapular Nerve Outlet muscle, action and test -C5 -Supraspinatus -Abduction of the humerus -Pressure applied against abduction
Suprascapular Nerve Outlet muscle, action and test -C5,6 -Infraspinatus -lateral rotation of the humerus -pressure applied against external rotation
Lateral pectoral nerve outlet, muscle, action and test -C5,6,7 -Pectoralis Major upper and lower fibers -Upper = flex and medially rotate shoulder; Lower=depress shoulder girdle and obliquely adduct humerus -upper=pressure applied against internal rotation and flexion; lower= pressure against adduction
Medial pectoral nerve outlet, muscle, action and test -C8, T1 -Pectoralis minor and lower fibers of Pectoralis major -Tilts scapula anteriorly and downward -No test
Upper (short) subscapular outlet, muscle, action and test -C5,6 -Subscapularis -Medial rotation of the humerus, joint stabilization -Pressure applied against internal rotation
Thoracodorsal outlet, muscle, action and test -C6,7,8 -Latissimus Dorsi -Internal rotation, extension adduction -Pressure applied against shoulder extension
Lower subscapular Nerve outlet, muscle, action and test -C5,6 -C6=teres major; C5=Subscapularis -C5 and 6=Internal rotation, extension, weak adductor -Apply pressure against internal rotation and extension
Spinal portion XI, ventral rami outlet, muscle, action and test -C3,4 -Trapezius -Retraction, rotation, depression, elevation -Shoulder shrug for upper fibers; position of attention for middle
Nerve to levator scapulae outlet, muscle, action and test -C3,4 -Levator scapulae -elevation -shoulder shrug
Created by: bmlanger