What supplies blood to the pharynx?
The upper part of the pharynx receives blood from the pharyngeal branch of the ascending pharyngeal artery and descending branches of the lesser palatine arteries. The lower part of the pharynx receives blood supply from inferior thyroid artery and superior thyroid artery.
What is the nerve supply to the nasopharynx?
The nasopharynx afferent innervation is dominantly provided by cranial nerve V2 anterior to the eustachian orifice and cranial nerve IX posterior to the tubal orifice. Motor innervation is dominated by pharyngeal branches of cranial nerves IX and X and sympathetic fibers from the superior cervical ganglion.
What drains into the nasopharynx?
Lymphatic drainage lateral drainage pathway: lymph vessels traverse the superior constrictor muscle and drain into the lateral retropharyngeal, deep cervical and posterior triangle lymph nodes.
Where does the nasopharynx drain into?
Results. The capillary network arises from the mucous membrane of the atrium, the turbinates, the floor of the nasal cavity, and the nasopharynx. They drain into the lateral pharyngeal and retropharyngeal lymph nodes.
How many openings does the nasopharynx have?
The pharyngeal cavity has seven (7) openings which are: 1-The paired posterior nose –rostrodorsally which connect nasopharynx with nasal cavity. 2-The paired eustachian tube –dorsolaterally, opening of the auditory tubes, connect the nasopharyngeal with auditory tubes and then middle ear.
What is the nasopharynx?
Listen to pronunciation. (NAY-zoh-FAYR-inx) The upper part of the throat behind the nose. An opening on each side of the nasopharynx leads into the ear.
What is the nasopharynx connected to?
The nasopharynx represents the most superior portion of the pharynx, bounded superiorly by the skull base and inferiorly by the soft palate. The nasopharynx connects the nasal cavity to the oropharynx and contains the Eustachian tube openings and adenoids.
What is the role of the nasopharynx?
The nasopharynx functions as an airway in the respiratory system. Also contained within the nasopharynx are the adenoids, or pharyngeal tonsils. Image from Human Anatomy Atlas. The oropharynx is the middle portion of the pharynx, working with both the respiratory and digestive systems.
What is the function of nasopharynx?
What is the difference between nasopharynx and pharynx?
The nasopharynx is the upper part of the pharynx. It is connected to the nose and is separated from the mouth by the soft area at the back of the roof of the mouth (called the soft palate). The base of the skull forms the top of the nasopharynx.
What is the main function of the nasopharynx?
Where does the nasopharynx get its blood from?
The nasopharynx receives its blood supply from Ascending pharyngeal artery, Ascending palatine branch of the facial artery, Ascending cervical artery, Maxillary artery – all are branches of the external carotid artery.
Which is responsible for venous supply to the nasopharynx?
The arterial supply is carried out by the ascending pharyngeal, palatine, facial, and cervical arteries, as well as the maxillary artery. The pterygoid and pharyngeal plexus are responsible for the venous supply to the nasopharynx [4]. The maxillary nerve or CN V2 provides the nerve supply in this area [2].
Where does the blood supply come from in the pharynx?
The pharynx is a location with a rich amount of arterial anastomoses, making it a highly vascularized anatomical structure. Three main arteries are responsible for its blood supply, all of them originating from the external carotid artery:
Where is the sensory supply located in the nasopharynx?
Anterior to the Eustachian tube, sensory supply is by the second division of trigeminal (Maxillary / V2) nerve while posterior to the tube it’s by the glossopharyngeal nerve.