Exam 1 Material

Question 1

simple squamous epithelium

Answer 1

flattened irregular shaped cells
forms a continuous surface
supported by an underlying basement membrane

Question 2

Bulk transport

Answer 2

various types of endocytosis, phagocytosis, pinocytosis

Question 3

Microvilli

Answer 3

extension of the cell which increase surface area

Question 4

Stereo cilia

Answer 4

found in the epididymis (males)
extra long, nonmotile microvilli

Question 5

What type of RNA is transcribed in the nucleus?

Answer 5

tRNA and mRNA

Question 6

Where is rRNA transcribed?

Answer 6

nucleolus

Question 7

What protects the cell from effects of hydrogen peroxide?

Answer 7

Peroxisomes

Question 8

Lysosomes

Answer 8

single cell membrane
low pH
many acid hydrolase
breaks down things with low pH

Question 9

Type of simple epithelia

Answer 9

1. simple squamous
2. simple cuboidal
3. simple columnar
4. simple columnar ciliated
5. pseudo stratified columnar ciliated

Question 10

Simple cuboidal epithelium

Answer 10

square appearance
round nucleus in the center of cell
lines small excretory/secretory ducts
ex. kidneys, salivary glands, pancreas

Question 11

Simple columnar epithelium

Answer 11

elongated nucleus
nucleus found toward the base
found in highly absorptive/secretory tissues
ex. stomach

Question 12

Simple columnar ciliated epithelium

Answer 12

uncommon in humans except in fallopian tube.

cilia can be identified with light microscope

Question 13

Pseudo stratified columnar ciliated

Answer 13

found in large airways of mammals
mucociliary (moves mucus to pharynx)

Gives impression of more than one layer of cells

Question 14

Stratified epithelia

Answer 14

two or more layer of cells

protection for skin that is prone to physical stress
ex. skin, vagina, esophagus

not good for absorption /secretion

Question 15

Stratified squamous keratinizing epithelium

Answer 15

cells that make up the skin

cross-linked protein results in tough layer containing keratin K protein

Question 16

Transitional Epithelium

Answer 16

Found in the urinary tract

Withstands extreme stretch, and toxicity of urine.

Question 17

Zonula adherens

Question 18

Nexus Junctions (communicating gaps)

Question 19

Goblet cells

Question 20

Apocrine Secretion

Answer 20

Discharges free, unbroken membrane bound vesicles

breast and sweat glands

Question 21

Merocrine Secretion

Answer 21

Most common form of secretion
Protein secretion

Question 22

Holocrine Secretion

Answer 22

discharge of entire cell
sebaceous gland

Question 23

Types of glandular epithelia

Answer 23

1.Merocrine
2. Holocrine
3. Apocrine

Question 24

Classification of simple epithelium is based on

Answer 24

number of ell layers