ClipArt ETC
"Sea anemone dissected; c, tentacles; d, mouth; e, stomach; white lines above k, the mesenteries." —Davison, 1906

Anemone

"Sea anemone dissected; c, tentacles; d, mouth; e, stomach; white lines above k, the mesenteries." —Davison,…

"Tangential section of a larva of Astroides calicularis which has fixed itself on a piece of cork. ec, Ectoderm; en, endoderm; mg, mesogloea; m, m, mesenteries; s, septum; b, basal plate formed of ellipsoids of carbonate of lime secreted by the basal ectoderm; ep, epitheca." — The Encyclopedia Britannica, 1910

Astroides Calicularis

"Tangential section of a larva of Astroides calicularis which has fixed itself on a piece of cork. ec,…

"A, Cerianthus solitarius. B, Transverse section of the stomodaeum, showing the sulculus, sl, and the arrangement of the mesenteries. C, Oral aspect of Arachnactis brachiolata, the larva of Cerianthus, with seven tentacles. D, Transverse section of an older larva. The numerals indicate the order of development of the mesenteries." — The Encyclopedia Britannica, 1910

Cerianthus Solitarius

"A, Cerianthus solitarius. B, Transverse section of the stomodaeum, showing the sulculus, sl, and the…

"A, Edwardsia cliparedii (after A. Andres). Cap, capitulum; sc, scapus; ph, physa. B, Transverse section of the same, showing the arrangement of the mesenteries. s, Sulcus; sl, sulculus. C, Transverse section of Halcampa. d, d, Directive mesenteries; stm stomodaeum." — The Encyclopedia Britannica, 1910

Edwardsia Cliparedii

"A, Edwardsia cliparedii (after A. Andres). Cap, capitulum; sc, scapus; ph, physa. B, Transverse section…

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…

This is a diagram of the sea-anemone, illustrating another type of radial symmetry. A, cross section; B, longitudinal section. c, the chamber between the mesenteries (m).

Sea-Anemone

This is a diagram of the sea-anemone, illustrating another type of radial symmetry. A, cross section;…

"The lacteals conduct the chyle from the intestines into numerous glands nearby, called the mesenteries, from which a fewer number of lacteals lead the chyle into one large tube in front of the spinal column, called the thoracic duct." —Brown, 1884

Thoracic duct and lacteals

"The lacteals conduct the chyle from the intestines into numerous glands nearby, called the mesenteries,…

"A, Zoanthid colony, showing the expanded zooids. B, Diagram showing the arrangement of mesenteries in a young Zoanthid. C, Diagram showing the arrangement of mesenteries in an adult Zoanthid. 1, 2, 3, 4, Edwardsian mesenteries." — The Encyclopedia Britannica, 1910

Zoanthid Colony

"A, Zoanthid colony, showing the expanded zooids. B, Diagram showing the arrangement of mesenteries…

"Transverse section of an Alcyonarian zooid. mm, mesenteries; mb, muscle banners; sc, sulcus; st, stomodaeum." —Encyclopedia Britannica, 1910

Alcyonarian Zooid

"Transverse section of an Alcyonarian zooid. mm, mesenteries; mb, muscle banners; sc, sulcus; st, stomodaeum."…