The skull and its landmarks DTH23 Part A 5 of 5.pdf

The Skull and its Landmarks Part 5 of 5 Julie Watson The Cranium – Infratemporal Fossa & Pterygopalatine Fossa  -hallow depression. Infratemporal ⑧ Fossa; An irregular shaped cavity, below and medial to the Zygo...

The Skull and its Landmarks Part 5 of 5 Julie Watson The Cranium – Infratemporal Fossa & Pterygopalatine Fossa  -hallow depression. Infratemporal ⑧ Fossa; An irregular shaped cavity, below and medial to the Zygomatic arch Its borders are: Superiorly - greater wing of the sphenoid bone Loading… Inferiorly - medial Pterygoid muscle Anteriorly - maxilla Posteriorly - Styloid and condylar processes Medially - sphenoid and palatine bones Laterally - ramus and coronoid process of the mandible 3 Dontbeasalmon.net  Functions of the Infratemporal Fossa Contains the muscles of mastication Within the fossa; lateral Pterygoid muscle & the medial Pterygoid muscle Originating and inserting at the borders of the fossa; Masseter & temporalis muscles · Maxillary artery + branches · mandibular nerve + branches Chorda tympani nerve-sensation to anterior · Pterygoid plexus 213 of tongue of veins. 4. Image from Research Gate  important. ? Why · carries mandibular. nerve It serves as a passageway for many neurovascular structures Inferior alveolar nerves Maxillary artery/vein Sensory branches of the trigeminal nerve Middle meningeal vein Loading… Posterior division of the So, why is this area of mandibular nerve importance to us as clinicians? ID BLOCKS Kenning, 2021 5 Glidewelldental.com 6 Medical-enc.com You Tube clip for this section https://www.youtube.com/watch?v=jLrkUTIqsAM (Infratemporal fossa) 7 located : maxillary bone anteriorly small but complex Prygoid process posteriorly orbital apex superiorly. Invented pyramid shape Pterygopalatine Fossa Located between the Infratemporal fossa and the nasopharynx Structure, inverted pyramidal shape Its walls are formed by the maxilla, palatine and sphenoid bones 8  Borders Anterior: Posterior wall of the Superior: Inferior orbital fissure maxillary sinus of the eye Posterior: Pterygoid process of Medial: Perpendicular plate of the sphenoid bone the palatine bone Inferior: Palatine bone and Lateral: Pterygomaxillary fissure palatine canals Ly, 2020 9 Functions of the Pterygopalatine Fossa It contains important neurovascular structures and their branches: - Sphenoid borl Maxillary nerve enters through foramen rotundum.. - Pterygopalatine ganglion Maxillary artery + - branches There are seven foramina which connect the Pterygopalatine fossa with the orbit, nasal, oral cavity, middle cranial fossa and Infratemporal fossa. maxillary nerve Why is this fossa of importance to us? 10  Loading… Pocketdentistry.com 11 You Tube clip for this section https://www.youtube.com/watch?v=8ioszJmsv3o – Pterygopalatine fossa 12 Summary – What have we covered in Parts 1-5? We have found out why the cranium is important and what its functions are We have found out what a suture is We now know the names of the sutures that hold the cranial bones together We have learnt the names of the Cranial Bones and their implications to us We have looked at the Infratemporal fossa & the Pterygopalatine Fossa and their implications to us 14 Further Reading https://www.anatomy.tv/titles https://www.kenhub.com/en/library/anatomy/the- sphenoid-bone https://radiopaedia.org/articles/pterygopalatine-fossa? lang=gb https://www.youtube.com/watch?v=JFr3BDTwMu8 (Foramina) 15 References , M (2021) Infratemporal Fossa. [online] Teach me Anatomy. Available at: https://teachmeanatomy.info/head/areas/infratemporal-fossa/ [Accessed on 8 May 2021] Sieroslawska, A. (2020) Infratemporal Fossa. [online] Ken Hub. Available at: https://www.kenhub.com/en/library/anatomy/infratemporal-fossa [Accessed on 8 May 2021] Ly, D. (2020) Pterygopalatine Fossa. [online] Ken Hub. Available at: https://www.kenhub.com/en/library/anatomy/anatomy-of-the-pterygopalatine-fossa [Accessed on 8 May] Anon. (n.d.) Sphenoid Bone. [online] Wikipedia. Available at: https://en.wikipedia.org/wiki/Sphenoid_bone [Accessed on 8 May 2021] Stone, J. (2019) Sphenoid bone. [online] teachmeanatomy. Available at: https:Complete Anatomy by Elsevier [Mobile App] [Accessed on 7 May 2021] Knapp, S. (2020) Frontal Bone. [image] Available at: https://biologydictionary.net/frontal-bone/ [Accessed on 7 May 2021] Knapp, S. (2020) Parietal Bone. [image] Available at: https://biologydictionary.net/parietal-bone/ [Accessed on 7 May 2021] Kenning//teachmeanatomy.info/head/osteology/sphenoid-bone/ [Accessed on 8 May 2021] 16 References continued Sanders, K. (2018) The Pterygopalatine fossa. [online] Teach Me Anatomy. Available at: https://teachmeanatomy.info/head/areas/pterygopalatine-fossa/ [Accessed on 8 May 2021] Copperwheat, A. (2020) The Ethmoid bone. [online] teachmeanatomy. Available at: https://teachmeanatomy.info/head/osteology/ethmoid-bone/ [Accessed on 9 May 2021] Yu, M. (2020). Anatomy, Head and Neck, Ethmoid Bone. StatPearls,. Accessed on 10 May 2021 Maynard, R. and Downes, N., (2019). Ethmoid Bone. Science Direct,. Accessed on 10 May 2021 Webster, S. (2009) Infratemporal Fossa. [Image] Available at: https://samwebster.net/?p=1995 [Accessed on 8 May 2021] University of Iowa (2017) Juvenile Nasopharyngeal Angiofibroma (JNA) Anatomy: the Pterygopalatine Fossa. [image] Available at: https://medicine.uiowa.edu/iowaprotocols/juvenile-nasopharyngeal-angiofibroma-jna- anatomy-pterygopalatine-fossa [Accessed on 9 May 2021] Dental Care Blog (2013) Dental Anasthesia: Posterior Superior Alveolar Nerve Block. [image] Available at: http://eurekadent.blogspot.com/2013/02/dental-anasthesia-posterior-superior.html#.YJfj6C1Q01J [Accessed on 8 May 2021] Sieroslawska, A. (2020) Sphenoid Bone. [online] Ken Hub. Available at: https://www.kenhub.com/en/library/anatomy/the-sphenoid-bone [Accessed on 10 May 2021] 17