اناٹومی مطالعاتی نوٹ · Head and neck

Muscles of facial expression

Thin integumentary muscles of the face, mostly arising from the skull bones and inserting into the skin or other facial muscles. Their main role is to open and close the facial orifices (orbits, nostrils, mouth); facial expression is a by-product of that control.

اہم نکات

All supplied by the facial nerve.
They control the facial orifices; expression is secondary.
Corrugator: vertical frown lines. Procerus: wrinkles the nose.
Lip dilators radiate from the lips and separate them.
UMN lesion spares the forehead; LMN lesion does not.
From the second (hyoid) pharyngeal arch → facial nerve.
Skeletal muscle: multinucleated, peripheral nuclei, striated.
Epimysium → perimysium → endomysium.

اٹلس میں مکمل نوٹ میں یہ بھی شامل ہے

خصوصیات · Nerve supply · 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. 1519, 1536–1539
Inderbir Singh’s Human Embryology, ch. 9, PDF pp. 120, 122, 125
BRS Cell Biology & Histology, 7th ed., ch. 8, PDF pp. 135–144

head and neck سے مزید

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