NUR1 235 Lecture Notes - Lecture 4: Wound Healing, Hypopigmentation, Congenital Heart Defect
15 Oct 2017
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Recall: number 4: signs of grade 3 shock priority for nurse, delegate other cases. Skin: cutaneous membrane, consists of epidermis and dermis. Hair and hair follicles, exocrine glands and nails: they are accessory structure, embedded in the dermis and project up to the epidermis. Protects and insulates projects above skin everywhere except the sides and soles of the feet, palms of hands, sides of fingers and toes, lips, and portions of external genitalia. Arrector pili muscles contract around hair to cause goosebumps in cold and stress. Structure: shaft: visible projecting part, root: begins at the hair bulb and halfway to the skin surface. 2 types of hair: vellus covers most of the body, terminal. Increases in hair loss can be related to stress, drug use, diet, radiation, fever, or hormones. Produ(cid:272)e a(cid:374) oily su(cid:271)sta(cid:374)(cid:272)e (cid:272)alled (cid:862)se(cid:271)u(cid:373)(cid:863: protects against moisture loss, lubricates hair. Sebum secreted through hair follicles or sebaceous follicles. Arrector pili muscles contract to help secrete sebum.
