stomach

(Order Cumacea):

Expanded section of digestive tract between esophagus and midgut. Characterized by various lateral folds, channels, and ridges and may be differentiated in anterior cardiac and posterior pyloric regions. One to four pairs of hepatic ceca open into stomach at stomach/midgut border [Stachowitsch, 1992].

(Order Tanaidacea):

Expanded section of digestive tract between esophagus and midgut. If fully developed, divided into anterior cardiac and posterior py-loric sections. Digestive diverticula open into digestive tract at border of stomach and midgut [Stachowitsch, 1992].

(Order Decapoda):

Cardiac stomach, pyloric stomach [Stachowitsch, 1992].

(Order Amphipoda):

Posterior expanded section of foregut (esophagus, stomach). Characterized by various internal folds, channels, and ridges and may be differentiated into cardiac and pyloric regions. Opens into midgut and may give rise to series of ceca at stomach/midgut border [Stachowitsch, 1992].

(Order Mysida):

Expanded section of digestive tract between esophagus and midgut. Divided into larger anterior cardiac stomach and smaller posterior pyloric stomach. Characterized internally by numerous ridges and armed with spine- or tooth-like projections. Unpaired dorsal cecum and series of lateral ceca open into digestive tract at junction of stomach and midgut [Stachowitsch, 1992].

(Order Stomatopoda):

Expanded anterior section of digestive tract. Directly follows mouth and occupies most of head (cephalon). Consists of larger anterior cardiac stomach and smaller posterior pyloric stomach; opens posteriorly into midgut [Stachowitsch, 1992].

(Order Leptostraca):

Enlarged section of digestive tract between esophagus and midgut. If fully developed, consists of anterior cardiac region with grinding apparatus and posterior pyloric region with setose internal lobes. Forms foregut together with esophagus [Stachowitsch, 1992].

(Subclass Cirripedia):

Enlarged anterior region of midgut [Stachowitsch, 1992].

(Class Ostracoda):

Expanded anterior section of midgut (stomach, intestine). May bear single pair of large ceca or numerous smaller ceca [Stachowitsch, 1992].

(Class Ostracoda):

Expanded anterior section of midgut. May bear median anterior outpocketing (cecum) and lateral diverticula [Stachowitsch, 1992].

(Superorder Syncarida):

In anaspidacean, expanded section of digestive tract between esophagus and midgut. Contains ridges internally and is divided into anterior cardiac stomach and posterior pyloric stomach [Stachowitsch, 1992].

(Order Thermosbaenacea):

Expanded anterior section of digestive tract between esophagus and midgut. May be divided into anterior cardiac and posterior pyloric sections. Digestive ceca open into digestive tract at border of stomach and midgut [Stachowitsch, 1992].

(Order Euphausiacea):

Cardiac stomach, pyloric stomach [Stachowitsch, 1992].