ap Flashcards

7902431506	keratinocytes	produce keratin for strength	0
7902435286	melanocytes	contribute to skin color. melanin produced by these cells then transferred to keratinocytes	1
7902438728	Langerhans cells	part of the immune system	2
7902440095	merkel cells	detect light touch and superficial pressure	3
7902442086	keratinization	cells move outward through the layers they fill with keratin, die, and serve as a layer that resists abrasion and forms permeability layer	4
7902448810	stratum basale	deepest portion of epidermis and single layer. high mitotic activity and cells become keratinized	5
7902452363	stratum spinosum	limited cell division. desmosomes. lamellar bodies and additional keratin fibers	6
7902456167	stratum granulosum	contains keratohyalin. in superficial layers nucleus and other organelles degenerate and cells dies	7
7902460644	stratum lucidum	thin clear zone. found only in palms and soles	8
7902462613	stratum corneum	most superficial and consists of cornified cells	9
7902476083	melanin	provides for protection against UV light.	10
7902478944	albinism	deficiency or absence of pignment	11
7902482393	carotene	yellow pigment from vegetables	12
7902488017	cyanosis	blue color caused by decrease in blood oxygen content	13
7902494923	papillary	superficial. areolar with lots of elastic fibers. dermal papillae, capillary beds. fingerprints. touch receptors, nerve endings	14
7902501146	reticular	deep. dense irregular C.T. collagen and elastic fibers.	15
7902504730	cleavage lines	elastic and collagen fibers oriented in some directions more than in others	16
7902508069	striae	stretch marks	17
7902588318	holocrine	death of secretory cells	18
7902615499	eccrine glands	simple coiled tubular glands. open directly onto surface of skin. coiled part in dermis.	19
7902615500	apocrine	active at puberty. compound coiled tubular, usually open into hair follicles superficial to opening of sebaceous gland	20
7902625821	eponychium (cuticle)	is corneum superficial to nail body	21
7902627400	hyponychium	is corneum beneath the free edge	22
7902707208	excretion	removal of waste products from the body	23
7902733118	chondroblasts	form matrix	24
7902733148	chondrocytes	surrounded by matrix are lacunae	25
7902734694	perichondrium	double layered c.t. sheath covers cartilage except at articulations	26
7902737423	articular cartilage	covers bones at joints	27
7902747116	ossification	formation of bone by osteoblasts	28
7902749467	osteocytes	mature bone cells	29
7902749468	lacunae	spaces occupied by osteocyte cell body	30
7902751114	canaliculi	canals occupied by osteocyte cell processes	31
7902753783	osteoclasts	resorption of bone	32
7902756410	remodeling	removing old bone and adding new	33
7902760291	trabeculae	interconnecting rods or plates of bone	34
7902779058	fontanels	large membrane covered spaces between developing skull bones	35