Epithelial Tissue

Question 1

Simple squamous

Answer 1

Location: alveolar capillaries, lining blood vessels
Function: Reduce friction, permit diffusion

Question 2

Simple Cuboidal

Answer 2

Location: Thyroid/other glands, kidney tubules
Function: Primarily secretion and absorption

Question 3

Simple columnar

Answer 3

Location: Digestive tract, uterus, kidney
Function: Secretion and Absorption, protection

Question 4

Pseudostratified ciliated columnar

Answer 4

Location: Respiratory tract, male reproductive tract
Function: secretion/absorption, slightly protective

Question 5

Transitional

Answer 5

Location: Urinary bladder
Function: permit stretching; expand and recoil

Question 6

5 characteristics of epithelial tissue

Answer 6

1) Cellularity (Cells are jam-packed!!)
2)Polarily- apical (top) and basal (bottom) surfaces
3)attachment (Basement membrane)
4) Regenerative (Cells proliferate quickly, can lead to cancer!)
5) Avascular

Question 7

4 Functions:

Answer 7

-secretion/absorption
-protection
-permeability
-sensations

Question 8

what are the 2 secretions?

Answer 8

1) Mucous (glycoproteins)
2) serous (watery substance containing enzymes)

Question 9

2 types of unicellular glands

Answer 9

1) Mucous cells- salivary, trachea
2) goblet cells (more common)- small/large intestines

Question 10

3 methods of secretion

Answer 10

1) holocrine
2)apocrine
3) eccrine

Question 11

Eccrine secretion

Answer 11

released via exocytosis (salivary gland)

Question 12

Holocrine secretion

Answer 12

Released when entire cell bursts and dies (sebaceous glands)

Question 13

Apocrine secretion

Answer 13

shedding of cytoplasm (mammary gland)