. Elementary biology; an introduction to the science of life. Biology. 206 ELEMENTARY BIOLOGY is to that extent impeded, and the whole body suffers in conse- quence of the retention of urea and other poisonous by-products of protoplasmic activity. 239. Hygiene of the skin. The skin is more than an ex- creting organ; indeed, the excretory work of the skin may be considered rather in- cidental. Other functions of the skin are as follows : 1. Protection of the body (a) against mechanical injury, (d) against drying up, and (c) against excessive radiation of heat. 2. Regulation of the body temperat
. Elementary biology; an introduction to the science of life. Biology. 206 ELEMENTARY BIOLOGY is to that extent impeded, and the whole body suffers in conse- quence of the retention of urea and other poisonous by-products of protoplasmic activity. 239. Hygiene of the skin. The skin is more than an ex- creting organ; indeed, the excretory work of the skin may be considered rather in- cidental. Other functions of the skin are as follows : 1. Protection of the body (a) against mechanical injury, (d) against drying up, and (c) against excessive radiation of heat. 2. Regulation of the body temperature. 3. Perception of sensations of touch, heat, etc. But it is the secretions of the fat glands and the perspi- ration (see Fig. yy) that give rise to the need for special attention to the skin. The accumulation of wastes. Fig. 78. Kidneys and bladder a, the main artery, and d, the main vein, in the abdominal cavity, giving off branches to the kidneys, cc; d, funnel-shaped cavity in which the waste fluid is gathered by the gland action of the kidney; e-e, tubes lead- mg from the kidney to the bladder, /. The left kidney is represented as cut through lengthwise left behind when the perspira- tion evaporates and the catching of dust in the oil secreted by the oil glands, and in the pores through which the oil is secreted, call for periodic bathing. The best way to remove the accu- mulated wastes and dirt is by means of hot water and soap, with the help of a brush. But hot baths have a debilitating effect, forcing the blood into the capillaries of the skin and thus away from the muscles, brain, and internal organs. A warm bath once or twice a week should be enough for ordinary cleanliness if these supplement a daily cold 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 Gruenberg, Benjamin C. (Benjamin Ch
Size: 1221px × 2047px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublishe, booksubjectbiology
