Labels: O, esophagus; S, stomach; SI, small intestine; LI, large intestine, Sp spleen; L, liver (raised up); G, gall bladder; Pa, pancreas.

General View of the Alimentary Canal

Labels: O, esophagus; S, stomach; SI, small intestine; LI, large intestine, Sp spleen; L, liver (raised…

Birds usually have three cavities or stomachs. Labels: 1, The esophagus. 2, Ingluvies (crop). 2, Proventriculus (secreting stomach). 4. Triturating stomach (gizzard). 5, Intestine. 6, Two caeca.

The Alimentary Canal of a Fowl

Birds usually have three cavities or stomachs. Labels: 1, The esophagus. 2, Ingluvies (crop). 2, Proventriculus…

In reptiles the alimentary canal differs much from that of mammals or birds. As a general rule, it is shorter in proportion to the trunk than in warm-blooded vertebrates. Labels: 1, esophagus; 2, stomach; 3, small intestine; 4,large intestine.

The Alimentary Canal of the Flying Lizard

In reptiles the alimentary canal differs much from that of mammals or birds. As a general rule, it is…

There are two predominant forms of stomach in fish- one is like a bent tube (siphonal), and the other a blind tube (caecal). The herring has a caeca. Labels: The esophagus. 2, Stomach. 3, Small intestine. 4, Caeca. 5, Air-bladder. 7, Pneumatic duct.

The Alimentary Canal of the Herring

There are two predominant forms of stomach in fish- one is like a bent tube (siphonal), and the other…

In some species of fish the small intestine is in two to eight coils. The large intestines are short and straight, and the termination of the rectum opens into a cavity called the Cloaca. Labels: 1, Liver, 2, 3, Caecas or pouches connecting with small intestines. 4, 5, Small intestine, coiled. 6, Large intestine. 7, Biliary duct.

The Alimentary Canal of the Swordfish

In some species of fish the small intestine is in two to eight coils. The large intestines are short…

Front view of two successive stages in the development of the alimentary canal.

Development of the Alimentary Canal

Front view of two successive stages in the development of the alimentary canal.

Cockroach dissected to show alimentary canal, al.c.

Cockroach

Cockroach dissected to show alimentary canal, al.c.

"Zoaea of common shore-crab (Carcinus manas). The appendages are numbered; c., gills; i., alimentary canal." -Thomson, 1916

Shore Crab Zoaea

"Zoaea of common shore-crab (Carcinus manas). The appendages are numbered; c., gills; i., alimentary…

pond mussel dissected to show alimentary canal, al c..

Mussel

pond mussel dissected to show alimentary canal, al c..