Muscular Branches Of Median

The muscular branches of the median nerve are peripheral nerve branches that originate from the median nerve in the upper limb. These branches innervate various muscles in the forearm and hand, playing a crucial role in motor function. Anterior Interosseous Nerve (AIN): The AIN is a major branch of the median nerve. It arises from the median nerve approximately 5-7 cm below the elbow. It travels deep within the forearm, between the flexor digitorum superficialis and flexor digitorum profundus muscles. The AIN supplies motor innervation to the following muscles: Flexor pollicis longus: It flexes the thumb. Pronator quadratus: It pronates the forearm. Flexor digitorum profundus (to the index and middle fingers): It flexes the distal interphalangeal joints of the index and middle fingers. Recurrent Motor Branches: The median nerve gives off recurrent motor branches to some forearm muscles before continuing into the hand. These branches innervate the following muscles: Palmaris longus: It tenses the palmar aponeurosis. Flexor carpi radialis: It flexes and abducts the wrist. Pronator teres: It pronates the forearm. Flexor digitorum superficialis (to the middle and ring fingers): It flexes the proximal interphalangeal joints of the middle and ring fingers. It's important to note that the exact branching pattern of the median nerve's muscular branches can vary among individuals, but the mentioned branches are the commonly observed ones. These muscular branches of the median nerve are vital for motor control and coordination of various forearm and hand muscles, allowing for precise movements and functionality of the upper limb.

Median

The brachial plexus is formed by the ventral rami of c5-c8-t1 spinal nerves, and lower and upper halves of c4 and t2 spinal nerves. the plexus extends toward the armpit. the ventral rami of c5 and c6 form upper trunk, the ventral ramus of c7 forms the middle trunk, and the ventral rami of c8 and t1 join to form the lower trunk of the brachial plexus. under the clavicle, the trunks reorganize to form cords (fasciculi) around the axillary artery (arteria axillaris). the lateral cord (fasciculus lateralis) is formed by the upper and middle trunk, all three trunks join to form the posterior cord (fasciculus posterior), the lower trunk continues to the medial trunk (fasciculus medialis). the nerves (containing motor and sensory fibers) to the shoulder and to the upper limb emerge from the brachial plexus.