Kaelapõimik

Kaelapõimik, also known as the brachial plexus, is a network of nerves that extends from the cervical spinal cord, through the neck and axilla, and into the arm. It is formed by the anterior rami of the lower four cervical nerves (C5-C8) and the first thoracic nerve (T1). These nerves then converge and divide into trunks, divisions, cords, and finally, the terminal branches that supply motor and sensory innervation to the entire upper limb.

The brachial plexus is crucial for the function of the arm, providing control over muscles involved in shoulder movement, elbow flexion and extension, and hand and finger dexterity. It also carries sensory information from the skin of the arm and hand back to the brain. Injuries to the brachial plexus can result from trauma such as falls, sports injuries, or birth complications, leading to varying degrees of weakness, paralysis, or sensory loss in the affected limb.

An understanding of the anatomy and function of the brachial plexus is essential for diagnosing and treating a range of neurological conditions affecting the upper limb. Medical professionals utilize this knowledge to pinpoint the location of nerve damage and develop appropriate treatment strategies, which may include physical therapy, medication, or surgical intervention.