Anatomy of Frontal Bone - Animated Osteology , MBBS 1st year скачать в хорошем качестве

Anatomy of Frontal Bone - Animated Osteology , MBBS 1st year

📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:-   / drgbhanuprakash   📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- https://t.me/bhanuprakashdr 📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- https://linktr.ee/DrGBhanuprakash Frontal bone -------------------- The frontal bone is a skull bone that contributes to the cranial vault. It contributes to form part of the anterior cranial fossa. Gross anatomy ------------------------- The frontal bone has two portions: vertical portion (squama): has external/internal surfaces horizontal portion (orbital): has superior/inferior surfaces External surface of the vertical portion features: ----------------------------------------------------------------------------- frontal/metopic suture frontal eminence (tuber frontale) superciliary arches which join to form the glabella supraorbital margin supraorbital notch/foramen containing the supraorbital nerve and vessels supratrochlear notch/foramen containing the supratrochlear nerve and vessels zygomatic process laterally upper and lower temporal lines run backwards and are the sites of attachment for the temporalis fascia and temporalis muscle, respectively nasal part features the nasal notch, nasion (middle of frontonasal suture), and nasal process (sharp spine, forms part of nasal septum) coronal suture bregma pterion Internal surface of the vertical portion features: ---------------------------------------------------------------------------- sagittal sulcus: vertical groove for the superior sagittal sinus frontal crest: ridge, formed from edges of sulcus that gives attachment to the falx cerebri foramen caecum: small notch, converted into foramen, emissary vein from nose groove for anterior meningeal artery (branch of anterior ethmoidal artery) The horizontal portion is composed of two thin, orbital plates separated by the ethmoidal notch. Inferior surface of the horizontal portion is smooth and concave. It features: lacrimal fossa: lateral shallow depression for lacrimal gland fovea trochlearis / trochlear spine near nasal part, for attachment of cartilaginous pulley for superior oblique muscle Superior surface of the horizontal portion is convex and contains depressions for cerebral convolutions. It features: openings for the frontal sinuses on either side of the nasal process; each frontal sinus communicates with the ipsilateral middle nasal meatus via a frontonasal duct two grooves converted into anterior and posterior ethmoidal canals when articulating with the ethmoid bone #frontalbone #frontalboneanatomy #frontalboneanimation #frontalboneosteology #animatedanatomy #frontalboneusmle #frontalbonelecture #frontalbonevideo #drgbhanuprakash #usmle #usmlestep1 #animatedanatomylectures #animatedanatomyvideos #drgbhanuprakashanatomyvideos