Epithelial Tissue

Question 1

Epithelial Tissue

Answer 1

Body covering (like skin), internal linings (lining of the stomach) and all glands(secretions)

Question 2

Epithelial functions

Answer 2

Protection, secretion, sensation

Question 3

Characteristics of Epithelial

Answer 3

1. Tightly packed cells
2. Avascular (no red blood cells)
3. Contains many nerves
4. Frequent Mitosis
5. 3 surfaces; Apical, Lateral, Basal.

Question 4

Simple

Answer 4

One row of cells

Question 5

Pseudostratified

Answer 5

Special type of simple; looks stratified but isn’t.

Question 6

Stratified

Answer 6

Two or more rows/layers of cells

Question 7

Squamous

Answer 7

“Squished” shaped cell

Question 8

Cuboidal

Answer 8

Squared shaped cell

Question 9

Columnar

Answer 9

Column shaped cell.

Question 10

Stratified squamous Epithelium

Answer 10

Location: epidermis (outer surface) of skin, lining of mouth, throat, vagina, anus, urethra.
Function: protection

Question 11

Simple Cuboidal Epithelium

Answer 11

Location: mostly glands
Function: secretion

Question 12

Glands

Answer 12

Epithelial tissue structure that secretes substances.

Question 13

Endocrine Glands

Answer 13

No ducts, secretes hormones into blood stream.

Ex: thyroid, adrenal, pituitary glands and ovaries/testes

Question 14

Exocrine Glands

Answer 14

Have ducts, secretes fluid onto body surfaces.

Ex: salivary, mammary, and sweat glands.

Question 15

3 types of Exocrine glands

Answer 15

Merocrine, Apocrine, holocrine

Question 16

How are epithelial tissues named ?

Answer 16

By # of rows/ layers of cells and shape of cells.

Ex: STRATIFIED(two rows of cells)-SQUAMOUS(squished shape)

Question 17

Merocrine

Answer 17

Secretion packaged into Vesicles ➡️ exocytosis.
Most common.

Question 18

Apocrine

Answer 18

Apical part of cell pinches off

Ex: sweat, mammary, curuminous (earwax) glands.

Question 19

Holocrine

Answer 19

Whole cell bursts/ruptures

Ex: sebaceous (oil) gland