Õlapõimik

The term "õlapõimik" refers to the brachial plexus in Estonian. The brachial plexus is a network of nerves formed by the ventral rami of the lower four cervical nerves and the first thoracic nerve (C5-T1). It originates in the neck and extends into the axilla, or armpit. This complex nerve structure is crucial for motor and sensory innervation of the upper limb, including the shoulder, arm, forearm, and hand. The brachial plexus branches into major nerves that control specific muscles and provide sensation to different regions of the arm. Damage to the brachial plexus can result from trauma, such as falls, birth injuries (e.g., Erb's palsy), or surgical complications, leading to varying degrees of weakness, paralysis, or sensory loss in the affected arm. Understanding the anatomy and function of the brachial plexus is essential for diagnosing and treating conditions affecting the upper limb.