. A manual of elementary zoology . Zoology. THE RABBIT 421 secrete an oily substance into the hair follicles. The glands and follicles are parts of the epidermis, but project inwards into the dermis. Below the latter is a layer of fatty tissue. The muscles of the adult rabbit, as in the frog, show little trace of the segmentation which they have in the early stages of development. The general arrangement of the internal organs resembles that of the frog, but a muscular partition, the midriff or diaphragm, separates off from the. Fig. 308.—A diagram of a transverse section through the thorax of
. A manual of elementary zoology . Zoology. THE RABBIT 421 secrete an oily substance into the hair follicles. The glands and follicles are parts of the epidermis, but project inwards into the dermis. Below the latter is a layer of fatty tissue. The muscles of the adult rabbit, as in the frog, show little trace of the segmentation which they have in the early stages of development. The general arrangement of the internal organs resembles that of the frog, but a muscular partition, the midriff or diaphragm, separates off from the. Fig. 308.—A diagram of a transverse section through the thorax of » rabbit. , Ventral part of mediastinum; at>., aorta; , inferior vena cava; /.z»., left ventricle ; ces., oesophagus ; /..c, spinal cord; sternum; »., vertebra. peritoneal cavity of the abdomen a chest or thorax in the breast region, where lies the pericardium, with on each side a pleural cavity, into which the lung of its side projects. The lining of each pleural cavity is known as a pleura, and of course covers the lung as well as the inside of the thorax. The heart in its pericardium does not lie free in the cavity of the chest, as that of the frog does in the anterior part of its pleuroperitoneal cavity, but is fastened to the dorsal and ventral walls of the thorax by a double sheet of membrane,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Borradaile, L. A. (Lancelot Alexander), 1872-1945. London : H. Frowde, Hodder & Stoughton
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1920
