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Terms in this set (36)pore a duct that opens externally as funnel-shaped apocrine sweat gland under skin in armpits and pubic regions; start secreting a more viscous solution into hair follicles in response to stress or sexual excitement; start at puberty hairs millions scattered all over the body. Serve a few minor protective functions- such as guarding the head against bumps, shielding the eyes, and helping keep foreign particles out of respiratory tract. root part of the hair enclosed in the follicle; penetrates skin shaft part projecting from the surface of the scalp or skin; visible portion hair bulb matrix growth zone, inferior end of follicle; bottom of hair follicle where cells actively divide to produce new hair cells hair follicles compound structures; sheath that surrounds hair in the skin arrector pili small bands of smooth muscle cells that connect each side of the hair follicle to the dermal tissue. Make hairs stand up on ends causing chill bumps. nail scalelike modification of the epidermis that corresponds to the hoof or claw of other animals. Free edge, body, and root. athletes foot an itchy, red, peeling condition of the skin between the toes, resulting from fungus infection. Also called tinea pedis. boils and carbuncles inflammation of hair follicles and sebaceous glands, common on the dorsal neck. cold sores small fluid-filled blisters that itch and sting, caused by a herpes simplex infection. The virus localizes in a cutaneous nerve, where it remains dormant until activated by emotional upset, fever, or UV radiation. Usually occur around lips and in the oral mucosa of mouth. contact dermatitis itching, redness, and swelling of the skin, progressing to blistering. Caused by exposure of the skin to chemicals that provoke allergic responses in sensitive individuals. impetigo pink, water-filled, raised lesions (around mouth and nose) that develop a yellow crust and eventually rupture. Caused by a highly contagious staphylococcus infection; common in elementary school-aged children. psoriasis a chronic condition, characterized by reddened epidermal lesions covered with dry, silvery scales. When severe, may be disfiguring. Its cause is unknown; may be hereditary in some cases. Attacks often triggered by trauma, infection, hormonal changes, and stress. burn tissue damage and cell death caused by intense heat, electricity, UV radiation, or certain chemicals. 1st degree burn only epidermis is damaged; becomes red and swollen; not usually serious; heals in 2-3 days; most sunburns 2nd degree burn involve epidermis and upper region of dermis; red, painful, and blisters appear; regeneration is possible; no permanent scars with proper care partial thickness burn first and second degree burns 3rd degree burn destroy entire thickness; so they are called full-thickness burns; burned areas appear blanched (gray-white) or blackened; because nerve endings are destroyed there is no pain; regeneration is not possible; skin graft must be done full-thickness burn third degree burns basal cell carcinoma the least malignant and most common skin cancer. Can't form keratin. Proliferate, invading dermis and subcutaneous tissue. Occur most often on sun-exposed areas and appear shiny, dome-shaped nodules that later develop central ulcer with pearly beaded edge. Slow growing and doesnt metastsize. Full cure - 99% squamous cell carcinoma arises from the cells of the stratum spinosum. Lesion appears as a scaly, reddened papule that gradually forms a shallow ulcer with a firm, raised border. Appears most often on scalp, ears, dorsum of hands, and lower lip. Grows rapidly. Sun-induced. Surgical removal or radiation therapy. Complete cure if caught early. malignant melanoma cancer of melanocytes. Accounts for about 5% of skin cancers, but its incidence is increasing rapidly and is often deadly. Can begin wherever there is a pigment; pigmented moles. Survival- 50% ABCD rule recognizes melanoma Asymmetry the two sides of the pigmented spot or mole do not match Border irregularity the borders of the lesion are not smooth but exhibit indentations; edges notched, uneven, and blurred color the pigmented spot contains areas of different colors (blacks, browns, tans, and sometimes blues and reds) diameter the spot is larger than 6 mm in diameter (the size of a pencil eraser) lanugo during the fifth and sixth months of fetal development, the soon-to-be-born infant is covered with this downy type of hair, usually shed by birth vernix caseosa baby's skin is covered with this when born. White, cheesy looking substance, produced by sebaceous glands, protects the baby's skin while it is floating in its water-filled sac inside the mother. milia accumulations in the sebaceous glands, appear as small white spots on baby's nose and forehead dermatitis skin inflammation alopecia some degree of baldness male pattern baldness not hairless (even though it seems that way), hair becomes colorless and very thin vellus tiny colorless hair (meaning wool) Sets with similar termsAnatomy Chapter 4 Part 239 terms Leeann_Bearden Lesson 3.362 terms madib16 Chapter 4: Part 2 (pg. 119-127)- Skin and Body Mem…32 terms MichaelaMattern Chapter 4 (124-128)31 terms alyssa_pasterchalk Sets found in the same folderHonors Anatomy & Physiology Ch. 20-21 Vocab Ursuli…49 terms annielongo1 Cell Parts and Function60 terms leeminha Anatomy Lecture - Unit 2 - Bones of the lower limb47 terms Stratoherc A&P ReviewSheet 10 The Skull24 terms bedhog5 Other sets by this creatorSpanish stem changing verbs11 terms m_rhyne Spanish Numbers28 terms m_rhyne English 12 Vocab Unit 615 terms m_rhyne Stats Chapter 4 Test26 terms m_rhyne Verified questionsANATOMY AND PHYSIOLOGY Describe the defecation reflex. 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What causes silvery white scales in psoriasis?It indicates the activeness of the disease. Plaque psoriasis typically presents as erythematous plaques with silvery scales most commonly over extensors of extremities, i.e., on the elbows, knees, scalp, and back.
What disease condition that has small and large plaque with silvery scales?Plaque psoriasis.
The most common type of psoriasis, plaque psoriasis causes dry, itchy, raised skin patches (plaques) covered with scales. There may be few or many. They usually appear on the elbows, knees, lower back and scalp.
What is psoriasis skin?Psoriasis is a skin disorder that causes skin cells to multiply up to 10 times faster than normal. This makes the skin build up into bumpy red patches covered with white scales. They can grow anywhere, but most appear on the scalp, elbows, knees, and lower back. Psoriasis can't be passed from person to person.
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Which skin condition is characterized by red, raised lesions covered with dry, silvery scales?
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