Epithelial Tissues

Question 1

functions of epithelial tissues

Answer 1

• covering
• protection
• absorption
• filtration
• secretion

Question 2

epithelial tissues are found ____

Answer 2

covering surfaces and lining body cavities

Question 3

epithelium can be classified based on

Answer 3

• shape
• layers
• special definitions

Question 4

epithelium based on shape

Answer 4

• squamous
• cuboidal
• columnar

Question 5

epithelium based on layers

Answer 5

• simple
• stratified

Question 6

epithelium based on special definitions

Answer 6

• pseudostratified
• transitional

Question 7

simple epithelial tissue includes

Answer 7

• simple squamous
• simple cuboidal
• simple columnar
• pseudostratified columnar

Question 8

stratified epithelial tissue includes

Answer 8

• stratified squamous
• stratified cuboidal
• stratified columnar
• transitional

Question 9

differences of squamous, cuboidal, and columar

Answer 9

• squamous - cells are flat, nucleus are centrally-located
• cuboidal - cells are cube-like, nucleus are centrally located, width and length almost similar
• columnar - cells are tall than wide, representing columns, nucleus are basally-located

Question 10

differences of simple and stratified

Answer 10

• simple - one layer of epithelial tissue, underlined by a single basement membrane
• stratified - two or more layers of epithelial tissue, each layer underlined by a basement membrane

Question 11

difference between pseudostratified and transitional

Answer 11

• pseudostratified - classified under simple epithelium, made up of cells of various heights but location of nucleus vary - some found in the apex, in the base, or near the middle of the cell
• transitional - changes shape because of regular distension

Question 12

the stratified appearance in pseudostratified epithelium is brought by

Answer 12

• irregular positioning of nucleus
• unequal sizes of the cells

Question 13

tissues are group (aggregation) of cells with _______ , performing the _______ and are bound by the ______

Answer 13

• similar form
• same function
• extracellular matrix

Question 14

second platform of biological organization, above the cell and under the organ & organ system

Answer 14

tissue level

Question 15

total number of cell types in humans

Answer 15

210

Question 16

epithelium in the tracheal linings

Answer 16

pseudostratified columnar

Question 17

epithelium in the mucus linings of the lower urinary tract

Answer 17

transitional epithelium

Question 18

epithelium in the kidney

Answer 18

cuboidal

Question 19

tissue linings found mostly in the respiratory and digestive tract

Answer 19

columnar

Question 20

made up of spherical to polygonal cells mostly found in the corneal layer of the skin epidermis that are filled with protein keratin

Answer 20

keratinized squamous

Question 21

made of thin spherical and polygonal cells that make up the mucosal linings of cavities (eg., oral cavity)

Answer 21

non-keratinized squamous

Question 22

epithelium that make up glandular tissues (eg., mammary glands, sweat glands, salivary glands)

Answer 22

stratified cuboidal

Question 23

epithelium that make up the linings of pharynx, conjunctiva, and urethra of males

Answer 23

stratified columnar