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Opening into each hair-follicle are usually one or more sebaceous, or oil, glands. These consist of groups of minute pouches lined with cells producing an oily material which serves to oil the hair and keep the skin moist and pliant. The Nails. The nails are also formed of epidermis cells which have undergone compression, much like those forming the shaft of a hair.
The description of the night-prowling shyster lawyer, whose forehead is covered with sebaceous wens, is the very acme of propriety; our first meeting; with the poet Eumolpus is a beautiful study in background and perspective.
Structure of skin Blisters Callosities Corns Chilblains Boils Carbuncle Abscess Veldt sores Tuberculosis of skin: Inoculation tubercle Lupus: Varieties Sporotrichosis Elephantiasis Sebaceous cysts or wens Moles Horns New growths: Fibroma; Papilloma; Adenoma; Epithelioma; Rodent cancer; Melanotic cancer; Sarcoma AFFECTIONS OF CICATRICES Varieties of scars Keloid Tumours AFFECTIONS OF NAILS.
Retention cysts develop when the duct of a secreting gland is partly obstructed; the secretion accumulates, and the gland and its duct become distended into a cyst. They are met with in the mamma and in the salivary glands. Sebaceous cysts or wens are described with diseases of the skin.
It has no blood-vessels and no nerves, but is nourished by lymph which escapes from the vessels deeper in the skin. It is simply protective in nature. The true skin is made up of two indistinct layers, which harbor a vast multitude of nerves, blood-vessels and lymph-vessels. In the skin there are two kinds of glands, the sebaceous and the sweat glands.
This apparatus, which is of the rudest description, is constructed of two large beams, placed horizontally so as to form a trough capable of containing about fifty of the rings with their sebaceous cakes; at one end it is closed, and at the other adapted for receiving wedges, which are successively driven into it by ponderous sledge-hammers, wielded by athletic men.
He had menstruated for three years in this manner: a fluid exuded from the sebaceous glands of the deep fossa behind the corona glandis; this fluid was of the same appearance as the menstrual flux. The quantity was from one to two ounces, and the discharge lasted from three to six days.
Certain tribes and races of people have characteristic odors. Negroes have a rank ammoniacal odor, unmitigated by cleanliness; according to Pruner-Bey it is due to a volatile oil set free by the sebaceous follicles.
Centre of body high; head Strong movements and cries as soon disproportionate in size; membrana as born; body clear, red colour, pupillaris present; testicles coated with sebaceous matter; mouth, undescended; deep red colour of nostrils, eyelids, and ears, open; parts of generation; intense red skull somewhat firm, and fontanelles colour, mottled appearance, and not far apart; hair, eyebrows, and downy covering, of skin; nails not nails, perfectly developed; formed; feeble movements; testicles descended; free discharge inability to suck; necessity for of urine and meconium; power of artificial heat; almost unbroken suction, indicated by seizure on the sleep; rare and imperfect nipple or a finger placed in the discharges of urine and meconium; mouth. closed state of mouth, eyelids, and nostrils.
We must suppose that in the beginning the sucking stimulus caused both growth and secretion, for at first there was nothing but sebaceous or sweat glands, and although a mutation might be supposed to have produced larger glands, no mutation could explain the influence of hormones on the growth and function of such glands.
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