اناٹومی مطالعاتی نوٹ · Head and neck

Cervical plexus

Formed by the anterior rami of C1–C4 in front of levator scapulae and scalenus medius, under the prevertebral fascia. It supplies skin and muscles of the neck and the diaphragm.

اہم نکات

• C1–C4.
• Nerve point: middle of the posterior border of sternocleidomastoid.
• Cutaneous: lesser occipital, great auricular, transverse cervical, supraclavicular.
• Ansa cervicalis → infrahyoid muscles; phrenic C3–5.
• Ventral root: basal-lamina neurons. Dorsal root: neural-crest ganglion cells.
• Schwann cells: neural crest.
• Nerve: epineurium → perineurium (blood–nerve barrier) → endoneurium.
• Cut nerve: Wallerian degeneration; regrows 0.5–3 mm/day.

اٹلس میں مکمل نوٹ میں یہ بھی شامل ہے

Branches · Histology · Development · طبی اہمیت

مفت سائن اِن کریں تاکہ اسے 3D ماڈل پر دیکھیں، مکمل نوٹ پڑھیں اور اس پر سوالات کی مشق کریں۔

ماخذ

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 12, PDF pp. 1688–1690
• Inderbir Singh’s Human Embryology, ch. 17, PDF pp. 318, 321, 323–325
• BRS Cell Biology & Histology, 7th ed., ch. 9, PDF pp. 163–166, 171–172

head and neck سے مزید

• Ciliary body
• Common carotid artery
• Common tendinous ring
• Cornea
• Corniculate and cuneiform cartilages
• Corpus callosum
• Corpus striatum
• Cricoid cartilage
• Cricothyroid
• Deep cervical lymph nodes
• Digastric
• Dura mater

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