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49 Cards in this Set

  • Front
  • Back
epithelial tissues
little to no intercellular material, classification based on number of cell layers, shapes of the surface cellular, avascular, basement membrane
simple epithelium
single layer of cells supported by basement membrane, specialized for absorption or filtration, located in areas of minimal wear and tear
simple squamous
flattened, scale-like, fitted together to form a mosaic
simple squamous epithelium when it covers viscera
simple squamous epithelium when it forms and capillary walls,lines blood and lymph vessels, and lines the heart
simple cuboidal
cubed shaped, from surface view, cells look like polygons with more than four sides, ovary covering and ducts in thyroid and salivary glands
simple columnar
long cylindrical cells like rectangles on ends, without cilia or modified (microvilli into goblet cells) or with cilia
stratified epithelium
stacked, top layer at free surface, bottom layer at basement membrane, top layer produced by mitotic divisions of bottom layers, areas of much wear and tear
stratified squamous
superficial cells are flat, deeper ones cuboidal to columnar, nonkeratinized line wet areas, keratinized forms outer dead, dry, layer of skin
tough water resistant protein contained in dead cells
stratified cuboidal
rare, ducts of adult sweat glands
stratified columnar
superficial cells are columnar, basal layer of irregualr (polyhedral) cells, male urethra, milk ducts
superficial cells are large and rounded, but can be stretched into squamous-like situation, urinary bladder, ureters, urethra
glandular epithelium
secretion of chemicals
exocrine glands
secrete products into ducts that open at sin surface or into organ's lumen, oils sweat, enzymes
goblet cells whihc produce mucus
tubular, acinar, tubuloacinar
cell dies and secretion is discharged, sebaceous glands
no part of cell is lost, secretion produced, pancreas, salivary glands,
tips of cells are pinched off along with the secretion, milk glands
endocrine glands
ductless, secrete hormones into tissue spaces where they enter blood vessels, thyroid, adrenal gland, placenta
integumentary system
skin, epidermis,dermis, subcutaneous layer, hypodermis, hair glands, nails
largest organ of body, cover and protection, control of body temperature, stimuli from environment, small amounts of nitrogenous wastes, vit D production, surface is dead
outer thinner production of stratified squamous epithelium
stratum basale
single layer of columnar cells, site of mitosis, aka stratum germinativum
stratum spinosum
spiny appearance due to desmosomes, 8-10 rows of polyhedrals, Langerhans cells-initiate immune response
stratum granulosum
2 to 3 layers of flattened cells, contain granules of keratohyalin gives rise to eleidin, nuclei begin to degenerate, upper cells are dead
stratum lucidum
3-5 layers of clear flat dead cells, dead cells contains mostly eleidin which transforms to keratin, areas of thick skin, palms and soles, absent in hairy skin
stratum corneum
25-30 layers of flat, dead cells, cells contain keratin, cornified or horny, continuously shed and replaced from beneath
water resistant protein, friction callus may form, resists bacterial invasion
melanin, melanoblasts, melanocytes
yellow pigment abundant in epidermal cells of people of Asian decent, in s. corneum & fatty areas of dermis
papillary region
vascualr, dermal papillae increase surface area cause ridges, respoinsible for fingerprints
reticular regions
contains fibers, vessels, adipocytes glands, sensory receptors, hair follicles, attached to orgns by subcutaneous layer(NOT PART OF INTEGUMENT)
sebaceous glands
acinar, develop in empty hair follicles, secreting portion in dermis, some associated with hairless regions, large in breasts, face, neck upper chest, back and nipples, secrete sebum
sweat glands,located on mot of the body except nail beds of digits,margins of lips, eardrums, labia minora, and glans penis/clitoris
eccrine sweat
tubular, merocrine, secrete by dermis, open to free surface, many on palms and soles, ceruminous gland in ears
apocrine sweat
tubular extend into sub-q, associated with hair follicles, located in axillae, perineal region, around nipples, merocrine with viscous secretion in response to stress or sexual stimulation, degraded by bacteria to cause odors
most of body, protect from UV rays, important in touch, ornamental
hair follicles
bulb w/ indentation, matrix, germial area, hair root of cuticle, cortex and medulla, shaft, superficial portion, arrector pili muscles
highly modified keratinized epidermal cells, protects end of digits, picking things up, scratching
parts of nail
free edge, nail body, nail root, lunula, hyponychium, eponychium, nail bed of s. basale, nail matrix, curved longitudinally and transversely
free edge
portion of nail that is cut
nail body
visible part of nail
nail root
hidden part of nail in nail groove
moon shaped opaque region of nail
stratum corneum below free edge
cuticle, stratum corneum at proximal border of nail
nail matrix
thick s. basale, site of mitosis