body-wall

_Hautplatten_ form the general body-wall (exclusive of the skin) and the appendages.

Form and Function A Contribution to the History of Animal Morphology

Like Rathke, he found only three indubitable gill-slits, but he noticed that the body-wall in front of the first gill-slit was really composed of two arches, which were on the whole similar to the gill-arches.

Form and Function A Contribution to the History of Animal Morphology

The organism itself consists of a minute particle of protoplasm, a single cell with no definite shape or body-wall and no specialized organs or apparatus for carrying on the life-functions.

Insects and Diseases A Popular Account of the Way in Which Insects may Spread or Cause some of our Common Diseases Rennie Wilbur Doane

But they all agree in certain characters; all take their food and oxygen and carry on excretory processes by osmosis, _i. e._, through the body-wall; all are capable of some kind of locomotion, some have one or more flagella, others move by a pseudopod movement.

Insects and Diseases A Popular Account of the Way in Which Insects may Spread or Cause some of our Common Diseases Rennie Wilbur Doane

There are two main trunks or divisions of the tracheæ just inside the body-wall and a number of shorter connecting trunks.

Insects and Diseases A Popular Account of the Way in Which Insects may Spread or Cause some of our Common Diseases Rennie Wilbur Doane

His reason for this distinction is the fact that in the latter the organs are inclosed within walls of their own, distinct from the body-wall; whereas in the former the organs are formed by internal folds of the outer wall of the body, as in the Polyps, or are hollowed out of the substance of the body, as in Jelly-Fishes.

The Atlantic Monthly, Volume 09, No. 51, January, 1862 Various

In 1865 Kowalevsky discovered that the organs of respiration consist of numerous pairs of gill-slits leading from the digestive canal through the thickness of the body-wall to the exterior.

Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" Various

The vascular system itself is quite peculiar, consisting of lacunae and channels destitute of endothelium, situated within the thickness of the basement-membrane of the body-wall, of the gut-wall and of the mesenteries.

Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" Various

Correlated with the presence of the genital pleurae there is a pair of vascular folds of the basement membrane proceeding from the dorsal wall of the gut in the post-branchial portion of the branchio-genital region, and from the dorsal angles made by the pleural folds with the body-wall in the pharyngeal region; they pass, in their most fully developed condition, to the free border of the genital pleurae.

Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" Various

When the body-wall contracts the air is forced out of the thin-walled trachea through the spiracles; when the pressure is removed they are refilled by the fresh air rushing in.

Insects and Diseases A Popular Account of the Way in Which Insects may Spread or Cause some of our Common Diseases Rennie Wilbur Doane