Epithelial Tissues

Question 1

Basement Membrane

Answer 1

A thin extracellular layer that is made up of 2 layers and is the base of all epithelial tissues.

Question 2

Secretion

Answer 2

Formation and release of substances such as sweat, hormones, and saliva.

Question 3

Absorption

Answer 3

Intake of fluids or other substances such as digested food from the intestinal tract.

Question 4

Simple Squamous

Answer 4

Single layer of thin, flattened cells.
Function: diffusion + filtration
Location: air sacs in lungs + walls of capillaries.

Question 5

Stratified squamous

Answer 5

Many layers of square-shaped cells. Cells at surface (older cells) become flattened.
Function: multi-layer squamous, functions in protection.
Location: skin and mouth.

Question 6

Simple cuboidal

Answer 6

Single layer of cube shaped cells
Function: secretion and absorption
Location: found in kidney tubules and ducts, covers the ovaries.

Question 7

Stratified cuboidal

Answer 7

2-3 layers of cuboidal cells.
Function: protection
Location: lines ducts of mammary, sweat, and saliva glands.

Question 8

Simple columnar

Answer 8

Single layer of cells that are longer than they are wide.
Function: secretion and absorption.
Location: lining of uterus, stomach, intestines
** may contain goblet cells (produces mucus) and cilia

Question 9

Psuedostratified columnar

Answer 9

Single layer of columnar shape, shape and nuclei are uneven which give it a false layered look (pseudo -fake)
Function: movement, secretion, protection
Location: lining of trachea

Question 10

Stratified columnar

Answer 10

Multiple column shaped cells
Function: protection, and secretion
Location: male urethra, and parts of the pharynx (rare in the body)

Question 11

Transitional

Answer 11

Stretchable
Changes in response to increase tension.
Cells change shape between squamous and cuboidal (the cells have a messy shape to them)
Function: blocks diffusion
Location: lining of urinary bladder

Question 12

Glandular

Answer 12

A group of cells or single cells that secret substances into ducts, onto a surface, or into the blood in the absence of ducts.

Question 13

Exocrine

Answer 13

Secrets products, ducts that empty onto skin.
Location: sweat, oil, salivary, and earwax glands.

Question 14

Endocrine

Answer 14

Secrets hormones into bloodstream.
Location: pituitary, thyroid, adrenal, pancreas, ovaries, and testis.
Function: hormones power many body functions and maintain homeostasis.

Question 15

Ciliated

Answer 15

Something covered in microscopic projections that look like tiny hairs.

Question 16

Keratin

Answer 16

A tough, fibrous intracellular protein that helps protect skin and underlying tissues from hear, microbes, and chemicals.