QS Study

The palatine tonsil occupies the tonsillar fossa. They are a pair of soft tissue masses located at the rear of the throat (pharynx). One tonsil is located on the left side of the throat and the other is located on the right side.

Blood supply

Arterial supply – a tonsillar branch of the facial artery, contributions from the ascending pharyngeal and lingual arteries, ascending palatine vessels.

(1) Main arterial supply is the tonsillar branch of the facial artery;

(2) Anterior tonsillar, from the dorsal lingual branches of the lingual artery;

(3) Posterior tonsillar, from ascending palatine branch of facial, and ascending pharyngeal arteries;

(3) Superior tonsillar, from the greater palatine artery;

(4) Others:

  1. Ascending palatine branch of the facial artery.
  2. Dorsal lingual brindles of the lingual artery.
  3. Ascending pharyngeal branch of the external carotid artery.
  4. The greater palatine branch of the maxillary artery.

Blood of Palatine Tonsil 1


Fig: Blood supply of Palatine Tonsil

Venous drainage: venous plexus which drains into the pharyngeal plexus, external palatine vein. The veins of the tonsil drain into a peritonsillar vein, which descends from the soft palate that is found across the lateral space of the tonsillar capsule.

Lymphatic drainage: The lymphatics drain into jugulodigastric lymph nodes. The nymph of the tonsil drains into the upper deep cervical lymph nodes after piercing the superior constrictor.

Nerve supply:

The tonsil is supplied by the glossopharyngeal nerve and greater and lesser palatine branches from the pterygopalatine ganglion. These nerves convey both general and taste sensations. The blood supply to the palatine tonsils is done by the glossopharyngeal nerve as well as by a few palatine branches belonging to the sphenopalatine ganglion.

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