اناٹومی مطالعاتی نوٹ · Head and neck

Dural venous sinuses

Venous channels where the endosteal and meningeal layers of the dura mater separate. They are lined by endothelium and have thick fibrous walls with no muscle and no valves. They receive blood from the brain, the diploë of the skull, the orbit and the internal ear, and most of it leaves through the internal jugular veins.

اہم نکات

• Between endosteal and meningeal dura; no muscle, no valves.
• Superior sagittal → (right) transverse; inferior sagittal + great cerebral vein → straight → (left) transverse.
• Transverse → sigmoid → jugular foramen → IJV.
• Cavernous: ICA + VI inside; III, IV, V1, V2 in the wall.
• Dura (with its sinuses): mesoderm around the neural tube.

اٹلس میں مکمل نوٹ میں یہ بھی شامل ہے

خصوصیات · 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. 1557–1560
• Inderbir Singh’s Human Embryology, ch. 17, PDF p. 321; ch. 20, PDF p. 372

head and neck سے مزید

• Epiglottis
• Ethmoid
• External carotid artery
• External ear
• External jugular vein
• External nose
• Eyelids and conjunctiva
• Facial bones of the orbit and nasal cavity
• Facial nerve
• Frontal bone
• Frontal lobe
• Genioglossus

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