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A&P Ch5 Skin
|It is a hard protein produced by keratinocytes
|This pigment absorbs ultraviolet light to protect damage to the nucleus of keratinocytes in the epidermis.
|This layer of the epidermis is composed of a single row of cuboidal or columnar keratinocytes.
|Besides cuboidal-shaped keratinocytes, this layer of epidermis also has melanocytes and Merkel cells scattered within it.
|Stratum lucidum of the epidermis is present in
|What are sebaceous glands connected to?
|Which vitamin is produced in the skin?
|The process of scar formation is called:
|This layer of the skin is composed of keratinized stratified squamous epithelium.
|This cell responds to ultraviolet by making more pigment that causes the skin to darken.
|This epidermal cell has a role in immunity and disease resistance.
|Which layer of the epidermis continually generates new keratinocytes?
|This layer of the epidermis contains layers of flattened keratinocytes that are going through apoptosis.
|This part of the dermis contains 25-30 layers of dead keratinocytes
|stratum corneum of the epidermis
|Constant exposure of skin to friction stimulates the formation of a callus, which is the thickening of which layer of the epidermis?
|It is the process of cells producing and accumulating keratin
|What is the main component of the dermis of skin?
|This layer of skin is composed mainly of connective tissue with collagen and elastic fibers.
|This is another name for the subcutaneous layer.
|Differences in the skin color among peoples is due to:
|amount of melanin produced by melanocytes and transferred to keratinocytes
|This is transferred from melanocytes to keratinocytes to form a shield over their nuclei
|What best describes albinism?
|Absence of melanin
|What causes goose bumps on the skin surface?
|Arrector pili muscles pulling hairs erect during cold or fright
|Sebaceous glands are connected to which structures?
|The glands distributed throughout the skin of most regions of the body, especially in the skin of the forehead, palms, and soles are the:
|Eccrine sweat glands
|Where are the ceruminous glands found?
|Only in the outer ear canals
|The structure of skin that helps prevent water loss as well as inhibit bacterial growth on the surface of the skin is:
|This plays an important role in thermoregulation
|What stimulates vitamin D production in the skin?
|The process of scar formation is called:
|In this type of scarring, the scar tissue extends beyond the boundary of the injury into normal tissue.
|The most common and least dangerous form of skin cancer is a:
|Basal cell carcinoma
|A second-degree burn involves:
|The epidermis and part of the dermis
|This produces the protein that helps protect the skin and underlying tissue from light, heat, microbes and many chemicals
|This produces a pigment that contributes to skin colour and absorbs ultraviolet light
|These are cells that arise from red bone marrow, migrate to the epidermis, and participate in immune responses
|Cells thought to function in the sensation of touch
|Located in the dermis, they function in the sensations of warmth, coolness, pain, itching, and tickling
|Free nerve endings
|Smooth muscles associated with the hair follicles; when contracted to, they pull the hair shaft perpendicular to the skin surface
|An abnormal thickening of the dermis
|Release a lipid Rich secretion that functions as a water-repellent sealant in the stratum granulosum
|Pressure sensitive cells found mostly in the subcutaneous layer
|Associated with hair follicles, these secrete an oily substance that helps prevent hair from becoming brittle, prevents evaporation of water from the skin surface, and inhibits the growth of certain bacteria
|This is the deep region of the dermis composed primarily of dense irregular connective tissue.
|Composed of keratinized stratified squamous epithelial tissue
|This is not considered part of the skin, it contains areolar and adipose tissue and blood vessels; attaches skin to underlying tissues and organs
|Subcutaneous layer (hypodermis)
|This is The superficial region of the dermis; composed of areolar connective tissue
|The papillory region
|In deep wound healing epithelial cells migrate under scab to bridge the wound; formation of granulation tissue
|In deep wound healing sloughing of scab; reorganization of collagen fibres; blood vessels return to normal
|In deep wound healing vasodilation and increased permeability of blood vessels to deliver cells involved in phagocytosis; clot formation
|In deep wound healing extensive growth of epithelial cells beneath scab; random deposition of collagen fibres; continued growth of blood vessels
|What epidermal layer is found in thick skin but not in thin skin
|What is the most common that sweat glands that release a watery secretion
|Eccrine sweat gland
|Modified sweat glands in the ear are called
|Sweat glands located in the axilla, groin, areolae, beards of males and that release a thick, lipid-rich secretion
|Apocrine sweat glands
|The layer of the epidermis that contains stem cells undergoing mitosis
|The substance that helps promote mitosis in epidermal skin cells
|Epidermal growth factor
|To expose underlying tissues in the bottom of the foot a surgeon must first cut which layer of the stratum and list the following four more
|Stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, stratum basale
|Itching after skin can result in a
|Decrease in the activity of sebaceous glands
|Meaning of para-
|Meaning of peri-
|Meaning of patho-
|Meaning of metabol-
|Meaning of -philic
|Meaning of -phobic
|Meaning of glyco-
|Meaning of cilium
|Meaning of hemi-
|Meaning of endo-
|Meaning of condro-
|Meaning of colla-