What is the origin of the Palatopharyngeus muscle?
O: hard palate and palatine aponeurosis I: Posterior border of lamina of thyroid cartilage side of pharynx and esophagus
What is the origin of the Salpingpharyngeus muscle?
O: Cartilaginous portion of the pharyngotympanic tube I: Blends in with palatopharyngeua
What is the origin of the Stylopharyngeus muscle?
O: Styloid Process I: Thryoid Cartilage and blending into palatopharyngeua
What is the common action of the internal pharyngeal muscles?
Elevates pharynx and larynx during swallowing
What arteries supply the pharynx?
Branch of the facial artery, the tonsillar artery, passes through superior pharyngeal constrictor muscle.
What is the innervation of the Pharyngeal?
Pharyngeal plexus of Nerves: Motor and most sensory
Vagus: Motor Fibers through its pharyngeal branches supplying all the muscles of the pharynx and the soft palate.
What is the location of the esophagus?
Inferior border of the cricoid cartilage (C6)
Describe the breakdown of voluntary and involuntary muscles of the esophagus.
Upper third is voluntary
Middle Third is mixed
Lower third is involuntary
What artery supplies the esophagus?
Inferior Thyroid Arteries
What is the innervation of the esophagus?
The upper half is supplied with sensory and motor innervation through the vagus nerve.
The lower half motor innervation through the recurrent laryngeal nerve from vagus and sensory through sympathetic nerve fibers.
What does the superficial cervical lymph nodes of the neck drain?
Drain most fo the superficail structures of the neck into the inferior deep cervical lymph nodes.
Follows the course of the internal jugular vein.
What are the various lymph nodes of the neck?
Where does the thoracic duct travel?
Travels superiorly rom the left border of the esophagus in the thorax. Turns laterally at the root of the neck to enter the left brachiocephailic vein at the left venous angle (junction of IJV and subclavian)