ANAT200 Lecture 9: lecture 9
11 Feb 2019
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Document Summary
Major components: two components: skin, cutaneous membrane and accessory structures in the skin. Skin: epidermis: epithelium and the dermis which is the connective tissue. Accessory structures: exocrine glands, hair, nails, ear wax in the ear, sweat glands and sedation glands and each of the glands has a different way of releasing the product(holocrine, merocrine, autocrine. ) As well as the hair: metabolic functions: most important is vitamin d synthesis through uv rays going through the skin. And in the deeper part of the skin, subcutaneous fat part of the hypodermis, fat reservers for the body, so sores energy. Tissue composition: four types of tissues in the skin: Muscle, is smooth muscle receives innervation from the autonomic nerve cells, of hair position and dilation of blood vessels. Nerve endings with neurons to sense, control smooth muscles, and stimulate exocrine glands: sweat or ear wax or sebum.
