Median nerve

Nervus medianus

Formed from the lateral and medial cords of the brachial plexus (C5-T1). It descends through the arm without giving branches, passes through the cubital fossa, runs between the flexor digitorum superficialis and profundus in the forearm, and enters the hand through the carpal tunnel.

Tür Nerve
Vücut Sistemi Nervous
Vücut Bölgesi Forearm
Ana Yapı arm nerve
Latince Adı Nervus medianus
FMA ID 14385

İşlev

Provides motor innervation to most flexors of the forearm and thenar muscles of the hand. Provides sensory innervation to the lateral palm and palmar surface of the lateral three and a half digits.

Klinik Önemi

Carpal tunnel syndrome is compression of the median nerve at the wrist, causing numbness, tingling, and weakness. Anterior interosseous syndrome affects motor function. Pronator teres syndrome compresses the nerve proximally. The hand of benediction occurs with high median nerve lesions.

Sıkça Sorulan Sorular

What does the median nerve control?
The median nerve provides motor innervation to most of the flexor muscles of the forearm and several intrinsic hand muscles, particularly those of the thenar eminence (thumb muscles). Sensory supply covers the palmar surface of the thumb, index, middle, and lateral half of the ring finger, making it essential for fine pinch grip and sensation.
Where does the median nerve travel?
The median nerve forms from medial and lateral cords of the brachial plexus (C6–T1) in the axilla. It descends through the medial arm without branching, enters the forearm between heads of the pronator teres, travels deep to the flexor digitorum superficialis, and enters the hand through the carpal tunnel beneath the flexor retinaculum.
What is carpal tunnel syndrome?
Carpal tunnel syndrome is the most common peripheral nerve entrapment disorder, caused by compression of the median nerve within the carpal tunnel of the wrist. Symptoms include tingling, numbness, and pain in the thumb, index, and middle fingers, often worse at night. Severe cases lead to thenar muscle wasting. Treatment includes splinting, corticosteroid injections, or surgical decompression.

İlgili Yapılar

accessory nucleus of optic tract nuclei accessorii tractus optici muscle spindle muscle stretch receptor mushroom body corpora pedunculata myelencephalon sulcus limitans cavum septum pellucidum cave of septum pellucidum spinal cord commissure neodentate part of dentate nucleus neodentate portion of dentate nucleus nerve nerves

Tıbbi Sorumluluk Reddi

Bu içerik yalnızca eğitim ve bilgilendirme amaçlıdır. Profesyonel tıbbi tavsiye, tanı veya tedavinin yerini tutması amacıyla hazırlanmamıştır. Bir tıbbi duruma ilişkin sorularınız için her zaman doktorunuzun veya diğer nitelikli sağlık hizmeti sağlayıcısının tavsiyesini alın. Bu web sitesinde okuduğunuz bir şey nedeniyle profesyonel tıbbi tavsiyeyi asla göz ardı etmeyin veya geciktirmeyin.

Educational Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.