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39 Cards in this Set
- Front
- Back
what is the body's largest organ?
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skin
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what layer of the skin is a keratinized stratified squamous epithelium?
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epidermis
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what layer of the skin is made of connective tissue containing elastic, reticular, collagen, & fibroblasts?
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the dermis
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what layer of the skin is also known as the subcutaneous layer or the superficial fasia?
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hypodermis
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what layers of the skin are highly vascular?
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the hypodermis and the dermis
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what is subcutaneous fat primary composed of?
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adipose
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what causes yellowing of the skin and whites of the eyes resulting from high levels of bilirubin?
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jaundice
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what causes blueness of the skin resulting from a deficiency of oxygen and the circulation of blood?
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cyanosis
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social functions (non verbal communication), thermoregulation, sensation, water and UV barrier, resistance to trauma & vitamin d synthesis are all:
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functions of the skin
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stem cells, keratinocytes, melanocytes, tactile (merkel) cells & dendritic (langerhans) cells are all:
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cells of the epidermis
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what cells in the epidermis destroy bacteria?
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dendritic (langerhans) cells
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what is melanin produced by?
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melanocytes
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where can melanin be found?
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in keratinocytes
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what is erythema?
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redness of the skin due to dilated cutaneous vessels (sun burn, anger, embarrassment)
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what type of hair is the only type that is pigmented?
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terminal
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what is lanugo hair?
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fetal hair
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what is vellus hair?
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fine unpigmented hair of women and children
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pattern baldness if a sex influenced trait that is dominant in males because of?
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high testosterone levels
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hirsutism is a hormone imbalance. what is the result of hirsutism?
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excessive hair growth
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what causes goose bumps?
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piloerector muscle
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where are ceruminous glands found?
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in ear canal
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sebaceous glands produce?
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an oily secretion that have short ducts open to a hair follicle
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what glands produce sweat to help cool the body?
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merocrine
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what glands produce sweat containing fatty acids/ body odor in response to stress and sex?
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apocrine
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what type of skin cancer is the least dangerous?
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basal cell carcinoma
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what type of skin cancer arises from keratinocytes in the stratum spinosum and goes to the lymph nodes, can be lethal?
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squamous cell carcinoma
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what type of skin cancer is the most deadly and arises from melanocytes of a preexisting mole?
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malignant melanoma
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This layer is absent in thin skin:
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stratum lucidum
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what color hair has a sparse amount of melanin in the cortex?
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blonde
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The oily secretion that prevents the skin from drying and cracking is:
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sebum
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Mammary glands are modified _____ sweat glands.
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apocrine
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does apocrine sweat have a disagreeable odor?
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no
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The ______ of the bulb of each hair is vascularized and supplies the hair with its nutrition.
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papilla
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The layer of the epidermis where one can find melanocytes is the:
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stratum basal
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how thick is the dermis?
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0.2mm to 4mm
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What is a vitamin that cannot be absorbed through the skin? a, c, d, e, or k?
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vitamin c
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What are anagen, telogen, & catagen cycles of?
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hair growth
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Which type of skin graft is unlikely to cause an immune reaction?
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isograft
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The epithelium of the nail bed is called:
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hyponychium
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