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NMS 1: PNS Quiz 2

QuestionAnswer
Where does the musculocutaneous nerve come from Lateral cord; anterior division of brachial plexus
What muscles are innervated by the musculocutaneous nerve Biceps brachii, Brachialis, Coracobrachialis
Where does the axillary nerve come from Posterior Cord; posteiror division
What muscles does the axillary nerve innervate Deltoid and teres minor
Where does the radial nerve come from Posterior cord; posterior division
What muscles does the radial nerve innervate All extensors of forearm, wrist and fingers, inculding triceps brachii, brachioradialis and supinator
What is the segmental origin for the Deltoid C5 Posterior division
What is the segmental origin for the Biceps C5 Anterior division
Axillary Nerve Segments C5,6
Musculocutaneous nerve segments C5-7
Radial Nerve segmanets C5-T1
Muscles of the Axillary nerve Deltoid (middle, anterior and posterior), Teres Minor
Muscles of the Musculocutaneous nerve Biceps Brachii, Brachialis, Coracobrachialis
Muscles of the Radial Nerve Triceps, Anconeus
Middle Deltoid Nerve/segments, Actions, General Test -Axillary C5,6 -Abduction of the shoulder -Pressure applied against abduction
Anterior Deltoid Nerve/segments, Actions, General Test -Axillary C5,6 -Flexes and when supine medially rotates arm -Pressure applied against flexion
Posterior Deltoid Nerve/segments, Actions, General Test -Axillary C5,6 -Extends and when prone laterally rotates the arm -Pressure applied against extension
Teres Minor Nerve/segments, Actions, General Test -Axillary C6 -Extends, laterally rotate and weakly adducts -Pressure applied against shoulder extension
Biceps Brachii Nerve/segments, Actions, General Test -Musculocutaneous C5,6 -Flexes shoulder, flexes forearm and supinates forearm -pressure applied against flexion of forearm
Brachialis Nerve/segments, Actions, General Test -Musculocutaneous C5,6 (sometimes small radial branch) -Primary flexor of forearm at elbow -Pressure applied against flexion of forearm
Coracobrachialis Nerve/segments, Actions, General Test -Musculocutaneous C6,7 -flexes and adducts shoulder joint -Pressure applied against flexion at the shoulder, when forearm is supinated and flexed as in hair combing
Triceps Brachii Nerve/segments, Actions, General Test -Radial C7,8 -Extends elbow joint. Long head adducts and extends the shoulder -Pressure applied against extension of the forearm
Anconeus Nerve/segments, Actions, General Test -Radial Nerve C7,8 -Extends elbow joint -Pressure applied against extension of the forearm
What are the basic reflexes which evaluate integrity of nerve supply to the elbow -Biceps relex -Brachioradialis reflex -Triceps reflex
What segment is the Biceps reflex testing C5
What segment is the Brachioradials reflex testing C6
What segment is the Triceps reflex testing C7
Created by: bmlanger