Epithelium

Question 1

Apical

Answer 1

free surface of epithelial cell

Question 2

microvilli

Answer 2

increase surface area of cell

• contain actin core and terminal web
• fimbrin, myosin and spectin play a motor role
• look like a brush border
• have glycocalyx at the top

Question 3

stereocilia

Answer 3

very long microvilli

-epididymis, vas deferens and hair cells only

Question 4

nodal cilia

Answer 4

similar to primary cilia

Question 5

basal surface

Answer 5

the surface that rests on the extracellular supporting layer

Question 6

Basal lamina layers

Answer 6

lamina lucida
lamina densa
lamina reticularis

Question 7

lamina lucida and lamina densa

Answer 7

contains collagen IV, adhesive glycoproteins (laminin, fibronectin), and proteoglycans.
anchoring filaments- laminin and type XVII

Question 8

reticular lamina

Answer 8

made of collagen type III

Question 9

lateral surface

Answer 9

zonula occludens
zonula adherens
macula adherens (desmosome)

Question 10

goblet cell

Answer 10

cells that secrete mucins/mucous

Question 11

terminal bar

Answer 11

zonula occludens and zonula adherens

Question 12

simple squamous epithelia

Answer 12

• lining the lumen of all blood vessels (endothelium)
• lining of the body cavities and forming the surface layer of some organs (mesothelium)
• renal corpuscles (bowman’s capsule)

Question 13

simple cuboidal epithelia

Answer 13

-kidney tubules and smaller ducts in the exocrine glands

Question 14

simple columnar epithelia

Answer 14

-lining the lumen of the stomach, intestines, and gall bladder

Question 15

stratified squamous epithelia

Answer 15

Minimally Keratinized- lumen of the vagina, esophagus and parts of the oral cavitiy
Maximally Keratinized- epidermis

Question 16

stratified cuboidal epithelia

Answer 16

-larger size exocrine gland ducts (sweat glands)

Question 17

stratified columnar epithelia

Answer 17

-lining exocrine glands, and in some areas of the urethra

Question 18

transitional epithelia

Answer 18

• shape of the surface cells changes depending on the physiological status.
• only in urinary tract
• relaxed- large domes
• stretched- flat and rectangular

Question 19

pseudostratified columnar epithelia

Answer 19

• appears to be stratified, but isn’t.

- trachea

Question 20

metaplasia

Answer 20

transition from normal to normal epithelia

Question 21

dysplasia

Answer 21

transition from normal to abmnormal epithelia

Question 22

Endocrine glands

Answer 22

have no ducts

release product to connecting tissue and picked up by blood

Question 23

Exocrine glands

Answer 23

empty into ducts

Question 24

Merocrine

Answer 24

exocytosis release

Question 25

Apocrine

Answer 25

secretory material contains a thin rim of apical cytoplasm

Question 26

Holocrine

Answer 26

apoptosis of entire cell

Question 27

simple

Answer 27

single unbranched duct

Question 28

compound

Answer 28

multi branched duct

Question 29

tubular

Answer 29

long tube shaped secretory unites

Question 30

acinar (alveolar)

Answer 30

spherical shaped

Question 31

tubuloacinar

Answer 31

mixture of tubular and acinar

Question 32

Serous

Answer 32

secrete watery fluid rich in ions and glycoproteins

very eosinophilic

Question 33

mucous cells

Answer 33

vacuoles flatten the nucleus

secrete mucinogens that mix with water to become mucin which is mucus