United States or Saint Vincent and the Grenadines ? Vote for the TOP Country of the Week !
The skin consists of two layers, the derma, or true skin, and the epidermis, or cuticle. It is the principal seat of the sense of touch, and on the surface of the upper layer are the sensitive papillae, which receive and respond to impressions; and within, or imbedded beneath it, are organs with special functions, viz., the sweat glands, hair follicles and sebaceous glands.
GENERAL DISCUSSION. The two layers that form the skin are the epidermis and the derma. The cells of the outer layer or epidermis are of two kinds. The superficial portion is formed by horny, flattened cells and the deeper by softer cells. This layer of the skin varies greatly in thickness in the different species.
The follicles of these hairs extend down into the derma, and from the upper end of the follicle, i.e. near the aperture of the invagination, a long cellular outgrowth extends down into the derma, branches at its end, and becomes hollow. These branches are the tubules of the future milk gland. Another outgrowth from the follicle forms a sebaceous gland.
Philip, Ruy Gomez, the Duke de Feria, and two other nobles, then noiselessly, crept into the apartment. Carlos still slept so profoundly that it was necessary for Derma to shake him violently by the arm before he could be aroused.
The derma is composed of some muscular fibres interwoven with the connective-tissue fibres. It contains the roots of the hair follicles, sweat and oil glands. The external face which is covered by the epidermis shows a multitude of little elevations. These are the vascular and nervous papillae. In addition, it shows openings through which the hairs and the skin glands pass.
Philip, Ruy Gomez, the Duke de Feria, and two other nobles, then noiselessly, crept into the apartment. Carlos still slept so profoundly that it was necessary for Derma to shake him violently by the arm before he could be aroused.
Philip, Ruy Gomez, the Duke de Feria, and two other nobles, then noiselessly, crept into the apartment. Carlos still slept so profoundly that it was necessary for Derma to shake him violently by the arm before he could be aroused.
This is called connective tissue because it connects the skin to the lean meat. The upper layer is formed of cells. This is named epidermis or scarfskin. The deeper layer is made largely of fine threads woven together. It is the true skin or derma. There is no blood in the scarfskin, but there is a network of blood tubes in the true skin.
Philip, Ruy Gomez, the Duke de Feria, and two other nobles, then noiselessly, crept into the apartment. Carlos still slept so profoundly that it was necessary for Derma to shake him violently by the arm before he could be aroused.
In Greek pachus means thick, and derma skin. Pachyderms, therefore, are thick-skinned animals. It is rather a vague denomination, as you perceive, and does not tell us much about them; but it appears that it was not very easy to find a better term.
Word Of The Day