Epithelum

Question 0

Epithelia

Answer 0

Layers of cells that cover internal or external surfaces

Question 1

Epitheal tissue

Answer 1

Includes the surface of your skin

Question 2

Glands

Answer 2

Are structures that produce fluid secretion; they are ethier attached to or deprived from epithelia

Question 3

Cellularity

Answer 3

Composed mostly of cells bound closely together by interconnections known as cell junctions

Question 4

Polarity

Answer 4

Uneven distribution of membrane functions and organelles between the exposed

Question 5

Attachement

Answer 5

The base of an epithelium is bound to a thin basal lamina.

Question 6

Avascularity

Answer 6

Do not contain blood vessels

Question 7

Regeneration

Answer 7

Epithelial cells are damaged or lost are continuously replaced

Question 8

Functions of epitheal tissue

Answer 8

Provide physical protection
Control permeability
Provide sensation
Produce specialized secretions

Question 9

Glandular epithelium

Answer 9

Most or all of the epi cells produce secretions which are ethier discarded onto the surface of the epi to provide physical protection or released into the surrounding interstitial fluid and blood to act as chemical messengers

Question 10

Apical surface

Answer 10

The cell is exposed to an internal or external environment

Question 11

Basolateral

Answer 11

Includes both the base, where the cell attaches to underlying epi cells and on the sides

Question 12

Ciliated epi

Answer 12

Contains cilia

Question 13

Cell adhesion molecules

Answer 13

Large areas of opposing cell membranes are interconnected by transmembrane proteins

Question 14

Intercellular cement

Answer 14

Thin layer of proteglycans that contain polysaccharide derivatives

Question 15

Hyaluronan

Answer 15

Polysaccharide derivatives known as Glycosaminoglycans

Question 16

Cell junctions

Answer 16

Specialized areas of cell membrane that attach a cell to another cell or to extra cellular materials.

Question 17

Tight junctions

Answer 17

Lipid portions of the two cell membranes are tightly bound together by interlocking membrane proteins

Question 18

Lumen

Answer 18

When the epi lines a tube the apical surface is exposed to the space inside the tube, a passageway

Question 19

Gap junction

Answer 19

Two cells are held together by interlocking membrane proteins called connexons

Question 20

Desmosome

Answer 20

CAMs and proteglycans link the opposing cell membranes

Question 21

Lamina lucida

Answer 21

Layer closet to the epi

Question 22

Lamina densa

Answer 22

Deeper layer of the basal lamina

Question 23

Endocrine glands

Answer 23

Release their secretion into the interstitial fluid

Question 24

Exocrine glands q

Answer 24

Release their secretions into passageways called ducts that open onto the epithelial surface

Question 25

Endocrine ex

Answer 25

Thyroid gland and pituitary gland

Question 26

Melocrine secretion

Answer 26

The product is released from secretory vesicles by exocytosis

Question 27

Apocrine secretion

Answer 27

Involves the loss of cytoplasm

Question 28

Holocrine

Answer 28

Destroys the gland cell

Question 29

Serous glands

Answer 29

Decrease a watery solution that contains enzymes. The Paramus salivary glands are serous glands

Question 30

Mucous glands

Answer 30

Secrete mucins that hydrate to form mucus

Question 31

Mixed exocrine glands

Answer 31

Contains more than one type of gland cell and may produce two differ t exocrine secretions, one serous and one mucous .