Histology

Question 1

simple squamous

Answer 1

tight junction, blood vessels (endothelium), body cavities (mesoderm), bowmans capsule, alveoli

Question 2

simple cubodial

Answer 2

ducts of glands (sweat), most kidney tubules

Question 3

simple squamous function

Answer 3

fluid transport, gas exchange, lubrication

Question 4

simple cuboidal function

Answer 4

secretory and absorptive function

Question 5

simple columnar

Answer 5

lining of stomach, lining of intestines, lining of uterus and oviducts, lining of paranasal sinus, ependymal cells of spinal cord, wall of large kidney ducts

Question 6

simple columnar function

Answer 6

protection, secretion, absorption, transport

Question 7

stratified squamous general

Answer 7

joined by desmosomes, protection, keratinized and nonkeratinized

Question 8

nonkeratinized stratified squamous

Answer 8

have nuc, moist cavities- oral, esophagus, vagina, anal

Question 9

keratinized stratified squamous

Answer 9

no nuc or cyto, surface of skin, thick- sole of foot

Question 10

stratified cuboidal

Answer 10

lining of sweat gland

Question 11

stratified columnar

Answer 11

conjunctivia of the eye, lining ducts of some large glands

Question 12

transitional epithelium

Answer 12

2-6 layers, urinary system- bladder, urethra, ureter, empty apical- round, full apical- flattened, cells joined by desmosomes, barrier bw urine and underlying tissue

Question 13

pseudostratified columnar

Answer 13

resp system- trachea, primary bronchi, nasal cavity, cilia on apical sides

Question 14

glandular epithelim

Answer 14

exocrine and endocrine glands

Question 15

exocrine glands

Answer 15

maintain contact w surface epi- secrete fluids onto surface via ducts

Question 16

endocrine glands

Answer 16

no connection to surface epi, secretions carried via bloodstream

Question 17

basal lamina

Answer 17

firm, flexible support for overlying epi, barrier, doesnt let large or neg charge particles through, directs migration of damaged epi during wound healing

Question 18

basement membrance

Answer 18

thicher layer than BL, usually 2 BL of BL and another acellular level (reticular lamina)

Question 19

microvilli

Answer 19

fingerlike projections on cell, inc SA, core of actin containing MF oriented parallel to axis

Question 20

sterocilli

Answer 20

elongated, branched MV, epididymis and cochlea of ear

Question 21

glycocalyx

Answer 21

filamentous fuzzy coat overlaying MV, protect, GC and MV = brush boarder (kidney proximal tubule) or stratied boarder (intestinal epithelium)

Question 22

cilia

Answer 22

motile projection at apical surface membrane

Question 23

axoneme of cilia

Answer 23

complex of MT and proteins making the core, 9 MT doublets around a core of 2 ind MT

Question 24

ciliary dynein

Answer 24

used to generate bending motion of cilia

Question 25

cilia dyskinesia

Answer 25

cilia immotile- resp prob, infertilization in men

Question 26

lateral surface folding

Answer 26

inc folding to inc SA, epi cells invovled in fluid transport- kidney tubules, basal surface folding- kidney proximal tubules

Question 27

intercellular junction

Answer 27

lateral board of columnar/cuboidal cells, zonula occudens, zonula adherans, macula adherens

Question 28

zonula occudens

Answer 28

tight jx, prevent H20 soluble molecules from passing, leaky tight jx in kidney proximal tubules, maintenance of plasma memb protein polarity

Question 29

zonula adherans

Answer 29

belt desmosomes, ca dep transmemb linker proteins invovled, IC: a adherin, myosin, vinculin, rigidity

Question 30

macula adherens

Answer 30

spot desmosomes, firm cell to cell attachments, distribute shearing force

Question 31

hemidesmosomes

Answer 31

1/2 a spot of desmosome that attached basal cell memb to underlying basal lamina

Question 32

gap junction

Answer 32

channel forms across cell memb, transcellular movement of molecules, heart muscle