The Skull its landmarks DTH23 Part A 3 of 5.pptx

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  Location 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 Innervation: Anterior and Yu, 2020). 5 Posterior Ethmoidal 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 fibres. 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 Inflammation can cause plate may cause anosmia Rhinorrhoea – cerebral Ethmoid labyrinth spinal fluid can enter the fracture may allow nasal cavity and drains communication between out as a clear watery fluid the nasal cavity and orbit from one side of the nose and cause orbital emphysema Damage to the Ethmoid Inflammation can cause bone may be caused by Rhino sinusitis infection, inflammation or facial trauma. Yu, 2020 Copper wheat, 2020 You Tube Clip for this section https://www.youtube.com/watch?v=wwtW4tvGuSc (Ethmoid Bone) 11  Have a breather, get some fresh air! End of Part 3 12 Creativefabrica.com