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The musculocutaneous nerve is a mixed branch of the lateral cord of the brachial plexus derived from cervical spinal nerves C5-C7. It arises opposite the lower border of the pectoralis minor . [ 1 ] It provides motor innervation to the muscles of the anterior compartment of the arm : the coracobrachialis , biceps brachii , and brachialis . [ 2 ]
It acts to flex the elbow and extend the shoulder. It is innervated by the musculocutaneous nerve. Brachialis: originates on the lateral surface of humerus and inserts on the ulnar and radial tuberosities. It acts to flex the elbow. It is innervated by the musculocutaneous nerve. Cranial and lateral muscles of antebrachium:
The most commonly involved nerves are the suprascapular nerve, musculocutaneous nerve, and the axillary nerve. [9] [10] The signs of Erb's palsy include loss of sensation in the arm and paralysis and atrophy of the deltoid, biceps, and brachialis muscles. [6] "The position of the limb, under such conditions, is characteristic: the arm hangs by ...
Cutaneous innervation of the upper limbs is the nerve supply to areas of the skin of the upper limbs (including the arm, forearm, and hand) which are supplied by specific cutaneous nerves. Modern texts are in agreement about which areas of the skin are served by which cutaneous nerves, but there are minor variations in some of the details.
Compared to other species, dogs and cats are relatively resistant to botulism. [6] Dancing Doberman disease primarily affects the gastrocnemius muscle in Dobermans. It usually starts between the ages of 6 and 7 months. [3] One rear leg will flex while standing. Over the next few months, it will begin to affect the other rear leg.
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The medial cutaneous nerve of the forearm (also known as the medial antebrachial cutaneous nerve) is a sensory branch of the medial cord of the brachial plexus derived from the ventral rami of spinal nerves C8-T1. It provides sensory innervation to the skin of the medial forearm and skin overlying the olecranon.
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