The Skull and its Landmarks Part 3 of 5 PDF
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Uploaded by SplendidNephrite8490
South Bank University
Julie Watson
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Summary
This document is a study guide on the ethmoid bone, its parts and function in the human body, covering its location, features, and clinical relevance. It includes detailed information suitable for an undergraduate-level anatomy course, enhanced by supplementary visual aids such as images, diagrams, charts, illustrative tables and a short video clip.
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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 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 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 plate may Inflammation can cause cause anosmia Rhinorrhoea – cerebral spinal Ethmoid labyrinth fracture may fluid can enter the nasal cavity allow communication between and drains out as a clear watery the nasal cavity and orbit and fluid from one side of the nose cause orbital emphysema Inflammation can cause Rhino Damage to the Ethmoid bone sinusitis may be caused by 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
