The Skull its landmarks Part A 3 .pdf

The Skull and its Landmarks Part 3 of 5 Julie Watson The Cranium – The Ethmoid Bone  Ethmoid Bone Image from Wikipedia 3 Image from Human Anatomy  Originates from the Greek word Ethmos meaning sieve. This relates to the...

The Skull and its Landmarks Part 3 of 5 Julie Watson The Cranium – The Ethmoid Bone  Ethmoid Bone Image from Wikipedia 3 Image from Human Anatomy  Originates from the Greek word Ethmos meaning sieve. This relates to the lightweight and spongy structure Is a small unpaired bone that forms part of the orbital complex Copper wheat, 2020) 4 Image from Science Direct  Loca>on of the Ethmoid Bone The Ethmoid bone is situated in the paranasal sinuses Contributes to the medial wall of the orbit and forms part of the anterior cranial fossa Separates inferior to the nasal cavity and superiorly from the cranial cavity Innerva;on: Anterior and Posterior Ethmoidal Branches. Yu, 2020). 5 Image from TeachmeAnatomy Features of the Ethmoid Bone – Made up of 4 parts Cribriform plate Perpendicular plate Ethmoid labyrinths 6 Copper wheat, 2020 Cribriform Plate This forms the roof of the nasal cavity. It is perforated by numerous olfactory Abres. The crista galli projects superiorly from the cribriform plate 7 Perpendicular Plate Forms the superior two thirds of the nasal septum and descends from the cribriform plate. 8 Ethmoid Labyrinths Large masses located either side of perpendicular plate and contain Ethmoid air cells (which are the Ethmoid sinuses) 9  Clinical Relevance Fracture of cribriform plate may InHamma;on can cause cause anosmia Rhinorrhoea – cerebral spinal Ethmoid labyrinth fracture may Huid can enter the nasal cavity allow communica;on between and drains out as a clear watery the nasal cavity and orbit and Huid from one side of the nose cause orbital emphysema InHamma;on can cause Rhino Damage to the Ethmoid bone sinusi;s may be caused by infec;on, inHamma;on or facial trauma. Yu, 2020 Copper wheat, 2020 You Tube Clip for this sec>on https://www.youtube.com/watch?v=wwtW4tvGuSc (Ethmoid Bone) 11  Have a breather, get some fresh air! End of Part 3 12 Crea;vefabrica.com