ap Flashcards

6101787486	related cells that live and work together in cell communities	tissues	0
6101794885	four main functions of epithelial tissues	1. protection 2. absorption 3. sensation 4. secretion	1
6101799139	main function: protection	from bacteria	2
6101801677	main function: absorption	substances entering/ leaving must cross an epithelium	3
6101804945	main function: sensation	provide information about external environment	4
6101806773	main function: secretion	secretes various substances	5
6101813822	main characteristics: cellularity	mostly sheets of cells	6
6101819971	main characteristics: specialized contacts	holds cells together(cell junction)	7
6101823042	main characteristic: polarity	apical and basical surfaces	8
6101827820	main characteristic: attachment	base of epithelium attached to basal lamina (composed of proteins)	9
6101834441	main characteristic: avascular	no blood vessels	10
6101836888	main characteristic; regeneration	cell division	11
6101841324	impermeable junctions prevent molecules from passing the intercellular space	tight junction	12
6101846381	bind adjacent cells together and help form an internal tension- reducing network of fibers	desmosomes	13
6101849665	communicating allow ions and small molecules to pass from 1 cell to the next	gap junctions	14
6101856085	border of epithelial and connective tissue, composed of proteins	basal lamina	15
6101859911	______ are deep to the basal lamina from connective tissue	reticular fibers	16
6101864327	includes the basal lamina and the reticular fibers (reticular lamina)	basement membrane	17
6101867123	allows movement of substances over the cells	cilia	18
6101870238	allows absorption of substances into cell, folds are to increase surface area	microvilli	19
6101871963	specialized secretions	glands	20
6101877117	lack ducts, secrete directly into tissue fluid that surrounds them, release hormone into blood	endocrine	21
6101883559	have ducts, secretes products onto body surfaces(skin) or into body cavities(digestive tube)	exocrine	22
6101883560	the pancreas includes	both endocrine and exocrine	23
6101893334	simplest of the epithelia, allows passage of materials by diffusion in the lungs	simple squamous	24
6101899344	thick membrane composed of several cell layers, protects underlying tissues in areas subjected to abrasion in the skin	stratified squamous	25
6101907433	single layer of cube like cells with large spherical central nuclei, secretion and absorption in the kidneys	simple cuboidal	26
6101912717	single layer of tall cells with round oval nuclei, absorption in the digestive tract	simple columnar	27
6101925271	single layer of cells at different heights some not reaching free surface, secrete substance particularly mucus, propulsion of mucus by ciliary action in the trachea	pseudostratified columnar	28
6101935657	resembles both stratified squamous and stratified cuboidal, stretches readily and permits distension of urinary organ by contained urine in the urinary bladder	transitional	29