pharyngeal pouch

pouch (pouch) a pocket or sac.

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abdominovesical pouch  one formed by reflection of the peritoneum from the abdominal wall to the anterior surface of the bladder.

branchial pouch  pharyngeal p.

pouch of Douglas  rectouterine p.

ileoanal pouch  see under reservoir.

Kock pouch 

1. a continent ileal reservoir with a capacity of 500 to 1000 mL and a valve made by intussusception of the terminal ileum.

2. a modification of this pouch, used as a neobladder.

pharyngeal pouch  a lateral endodermal diverticulum of the pharynx that meets a corresponding pharyngeal groove in the embryonic ectoderm, forming a closing membrane.

Prussak's pouch  a recess in the tympanic membrane between the flaccid part of the membrane and the neck of the malleus.

Rathke's pouch  a diverticulum from the embryonic buccal cavity from which the adenohypophysis is developed.

rectouterine pouch , rectovaginal pouch the space between the bladder and uterus in the female peritoneal cavity.

rectovesical pouch  the space between the rectum and the bladder in the male peritoneal cavity.

Seessel's pouch  an outpouching of the embryonic pharynx rostrad of the pharyngeal membrane and caudal to Rathke's pouch.

vesicouterine pouch  the space between the bladder and the uterus in the female peritoneal cavity.

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pharyngeal pouch

n.

Any of the paired evaginations of embryonic pharyngeal endoderm that give rise to epithelial tissues and organs such as the thymus and thyroid glands. Also called branchial pouch.

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pharyngeal

pertaining to the pharynx.

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pharyngeal abscess

an abscess in the wall of the pharynx causing painful and difficult swallowing, pain on palpation, cough and if sufficiently large, the signs of pharyngeal obstruction.

pharyngeal cyst

subepiglottic cysts (remnants of thyroglosssal duct) and cysts on dorsum of pharynx and soft palate (remnants of craniopharyngeal ducts) may cause obstruction of the pharynx in the horse.

pharyngeal diverticulum

a small, 3-4 cm, midline diverticulum dorsal to the pharyngeal opening of the esophagus. Found only in pigs. It can become impacted with dried food and cause dysphagia.

pharyngeal dysphagia

see oropharyngeal dysphagia.

pharyngeal hypophysis cyst

a distended remnant of the pharyngeal anlage of the pituitary gland. It may protrude into the nasopharynx and obstruct respiration.

pharyngeal lymphadenopathy

enlargement of the pharyngeal lymph nodes, due to abscess, neoplasia, e.g. bovine viral leukosis, or hyperplasia and granuloma in chronic pharyngitis, is a possible cause of pharyngeal obstruction.

pharyngeal lymphoid hyperplasia

there is hyperplasia of lymphoid follicles on the roof of the pharynx thought to be a sequel of an upper respiratory tract virus infection. Clinically there is a chronic cough and a poor racing performance and the lesions can be observed via a fiberoptiscope.

pharyngeal neoplasia

a high incidence of squamous cell carcinoma in the mouth, pharynx and rumen is recorded in several countries, some associated with grazing on bracken. Chronic dysphagia and tympany result.

pharyngeal obstruction

characterized by noisy breathing, difficult swallowing, coughing and the coughing up of food. In dogs and cats pawing at the mouth is usual. There is no regurgitation through the nostrils. Manual or endoscopic examination of the interior of the pharynx is necessary. A common cause is foreign body impaction. See also throat abscess (1), pharyngeal cyst and pharyngeal lymphadenopathy (above), pharyngeal polyp (below) and impaction of the pharyngeal diverticulum (above) in pigs.

pharyngeal paralysis

presents a syndrome similar to pharyngeal obstruction with coughing, inability to swallow, but with no signs of pain or respiratory obstruction. See also cud dropping.

pharyngeal phlegmon

a peracute peripharyngitis, most commonly of cattle, characterized by profound toxemia, respiratory distress, swelling and pain of the throat area, painful cough and high fever. Fusobacterium necrophorum is usually present in the lesion. Called also intermandibular cellulitis.

pharyngeal polyp

a fibrous or mucoid, usually pedunculated mass that causes intermittent pharyngeal obstruction.

pharyngeal pouch

one of the paired bilateral outpockets of the embryonic pharynx located opposite external branchial clefts and separated from each other by the developing visceral or branchial arches.

pharyngeal reflex

gag reflex.

pharyngeal swab

nasopharyngeal swab.