ClipArt ETC
"Vertical section of a sea anemone. t., Tentacles; o., mouth; oes., oesophagus; c., c'., apertures through a mesentery; a., a'., acontia; g., genital organs on mesentery; m.f., mesenteric filaments; m.l. longitudinal muscles; s., primary septum or mesentery; s'., secondary septum; s''., tertiary septum; v., basal disc." -Thomson, 1916

Sea Anemone

"Vertical section of a sea anemone. t., Tentacles; o., mouth; oes., oesophagus; c., c'., apertures through…

"Structure of Antipatharians. 1. A group of polyps--M. mouth; t., tentacles. 2. Axis without polyps and coenenchyma, covered with spines (Sp.). 3. Vertical section of polyp--A., axis; t., tentacle; g., gullet; m., mesentery; o., ovary; m.f., mesenteric filaments. 4. Cross section of a polyp--EC., ectoderm; M., mesogloea; EN., endoderm; G., gullet; MS., mesenteries." -Thomson, 1916

Antipatharians

"Structure of Antipatharians. 1. A group of polyps--M. mouth; t., tentacles. 2. Axis without polyps…

Arteries of the abdominal organs. Labels: 1, the liver; 2, the stomach; 3, upper gut; 4, pancreas; 6, great mesenteric artery; 7, gastric branch; 8, spleen; 9, pyloric branch; 10, pancreatic branch; 11, hepatic artery; 12, duodinal branch; 13, cystic artery; 14, branches to the stomach; 15, 16, spleenic arteries; 17, gastro-epiploic artery; 18, descending aorta; 19, great mesenteric artery.

Arteries of the Abdominal Organs

Arteries of the abdominal organs. Labels: 1, the liver; 2, the stomach; 3, upper gut; 4, pancreas; 6,…

"Sections of types Coelenterates (diagrammatic): 1 (longitudinal) and 2 (transverse) of a tubular hydroid; 3, Sea Anemone (longitudinal); 4, same (transverse, at the level of the upper dotted line); 5, same (transverse section of same at the level of the dotted line. The continuous line is ectoderm, the broken line, entoderm, and the stippled portion, mesenchyma. c.c., circular canal; g, gullet; g.v., gastro-vascular cavity; m, mouth; ma., manubrium; mes., mesentery; mes.1, directive mesentery; o, ostium; r.c., radial canal; t, tentacle; v, velum." -Galloway, 1915

Cnidaria

"Sections of types Coelenterates (diagrammatic): 1 (longitudinal) and 2 (transverse) of a tubular hydroid;…

"The formation of a coral shell (Asteroides). st., Stomodaeum; ms., mesentery; s., calcareous septum; B., basal plate." -Thomson, 1916

Coral Shell

"The formation of a coral shell (Asteroides). st., Stomodaeum; ms., mesentery; s., calcareous septum;…

Little, elongated oval bodies, situated on some of the cerebro-spinal and sympathetic nerves.

Pacinian Corpuscle

Little, elongated oval bodies, situated on some of the cerebro-spinal and sympathetic nerves.

Mesentery and intestines of an ox. Labels: 1, duodenum; 2, small intestines; 3, caecum; 4, colon; 5, rectum; 6, mesentery.

Intestines of an Ox

Mesentery and intestines of an ox. Labels: 1, duodenum; 2, small intestines; 3, caecum; 4, colon; 5,…

The two mesenteries; the great colon being removed. Labels: a, anterior mesentery; b, mesenteric glands; c, loops of the small intestine; d, colic mesentery; e, loops of the floating colon; f, sphincter ani- internal layer; g, levator ani.

Mesenteries of a Horse

The two mesenteries; the great colon being removed. Labels: a, anterior mesentery; b, mesenteric glands;…

Two diagrams to illustrate the development of the mesenteries. In the first figure the rotation of the intestinal loop and the continuous primitive mesentery is shown. In the second figure (to the right), which shows a more advances stage, the portions of the primitive mesentery (going to the ascending and descending colons) which disappear through their adhesion to the posterior abdominal wall, are shaded dark, the portions which persist are lightly shaded.

Development of the Mesenteries

Two diagrams to illustrate the development of the mesenteries. In the first figure the rotation of the…

Section of mucous membrane of the small intestine. One the left a villus is seen in seen in section. Labels: a, the epithelial covering; c, the blood-vessels; d, the basement membrane, or subepithelial layer; e, spaces for reception of the chyle; f, origin of a lacteal vessel. On the right is a follicular depression in the mucous membrane, with b, the cells lining it; and c, the subepithelial layer.

Mucous Membrane

Section of mucous membrane of the small intestine. One the left a villus is seen in seen in section.…

Diagram to illustrate the development of the great omentum. A, shows the beginning of the great omentum and its independence of the transverse mesocolon; in B, the two come in contact; and in C, they have fused along the line of contact. Labels: A, stomach; B, transverse colon; C, small intestine; D, duodenum; E, pancreas; F, great omentum; G, placed in great sac; H, in small sac of peritoneum.

Development of the Great Omentum

Diagram to illustrate the development of the great omentum. A, shows the beginning of the great omentum…

The stomach, pancreas, liver, and duodenum, with part of the rest of the small intestine and the mesentery; the stomach and liver have been turned up so as to expose the pancreas. Labels: V, stomach; D, D',D'', duodenum; L, spleen; P, pancreas; R, right kidney; T, jejunum; Vf, gall bladder; h, hepatic duct; c, cystic duct; ch, common bile duct; 1, aorta; 2, an artery (left coronary) of the stomach; 3, hepatic artery; 4, splenic artery; 5, superior mesenteric artery; 6, superior mesenteric vein; 7, splenic vein; Vp, portal vein.

The Stomach, Pancreas, Liver, and Duodenum

The stomach, pancreas, liver, and duodenum, with part of the rest of the small intestine and the mesentery;…

"Diagrammtic longitudinal section of an Anthozoan zooid. m, Mesentery; t, Tentacles; st, Stomodaeum; sc, Sulcus; r, Rotteken's muscle; s, stoma; lm, Longitudinal muscle; d, diagonal muscle; go, gonads." —Encyclopedia Britannica, 1910

Anthozoan Zooid

"Diagrammtic longitudinal section of an Anthozoan zooid. m, Mesentery; t, Tentacles; st, Stomodaeum;…