Gross Anatomy Lecture Notes - Pharnyx, Soft Palate, and Palatine Tonsil

Gross Anatomy Lecture Notes - Pharnyx, Soft Palate, and Palatine Tonsil

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D503/D850 Gross Anatomy Lecture Notes 11/16/11 – Pharnyx, Soft Palate, and Palatine Tonsil Milk-eye squirting - Medial corner of the eye is a punctum connected to a lacrimal canniculus that connects to the lacrimal sac that continues as the nasolacrimal duct into the inferior meatus in the nasal cavity. o What the man is doing is snorting milk and reversing the pressure. Instructions for removal of head off of cervical spine - Get fingers behind carotid sheaths freeing up retrovisceral space. - Work down towards superior mediastinum. - Hand saw and chisel cuts to make a V-shaped wedge o Blades should pass halfway between jugular foramen and the lateral margin of foramen magnum. o Go half way between clivus on both sides Undersurface of the skull at this point is the pharyngeal tubercle (superior constrictor muscle of the pharynx attaches here) - Then pull the hand downward so you can see the back wall of the pharynx. o Neurovascular compartment of the lateral aspect of the pharyngeal wall. - Midline cut down pharyngeal raphe to look inside the nasal cavity, oral cavity, and oral pharynx. - On Friday, we’ll pass through the cribriform to access the nasal cavity and lateral pharyngeal wall. Relationships of Orbit to Regions of Head (From Head 5) - The orbit is related to other regions of the head. - Floor of the orbit is the ceiling of the maxillary sinus. o On the floor of the orbit is the infraorbital foramen. - Blowout fracture of the medial wall or floor of the orbit. - Rampant infections in paranasal sinuses can erode into the orbit because the orbital floor is so thin. Blowout fracture of the orbit - Floor of the orbit injured - Pretty common associated with violence (punches, elbows, etc.) - The pressure put upon the eyeball is dissipated by the thin walls of the orbit. - This was an injury Reggie Miller experience during a game! - Maxillary bone fractures and so you have orbital fat and inferior rectus are tethered at the fracture site. o These enter the maxillary sinus. o If the inferior rectus is there, patient cannot elevate the eye. o Patient will typically have diplopia (eyes can’t move symmetrically so double vision occurs). o Following repair of this (elevate the contents back to the orbit and put a plate where the bone is), patients will complain of numbness in the following areas due to infraorbital nerve injury: Lower eyelid Lateral side of the nose
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Mucous membrane and skin of the upper lip Maxillary teeth Head 6 - The pharynx is the cranial end of the foregut. - It has dual functions: upper respiratory and digestive systems. - The pharynx from behind is funnel shaped: broader superiorly and narrows inferiorly when it becomes continuous with the esophagus. -
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Gross Anatomy Lecture Notes - Pharnyx, Soft Palate, and Palatine Tonsil

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