Unit 2: Histology, Integument, Bone, Skeleton

Question 1

Tissue

Answer 1

Group of ells with the same function

Question 2

What are the four main types of tissues

Answer 2

• epithelial
• connective
• muscle
• nervous

Question 3

Epithelial tissue

Answer 3

lining and coverings

Question 4

Connective tissue

Answer 4

supports, protects, and binds other tissues together

Question 5

muscle tissue

Answer 5

force (contracts to cause movement)

Question 6

nervous tissue

Answer 6

communication (internal)

Question 7

Epithelial Tissue Traits

Answer 7

• all very cellular
• polarity to them (polar)
  – apical edge (outward edge)
  –basal edge (bottom)
• avascular (blood vessel)
• highly regenerative (a lot of mitosis)
• functions: protection, exchange, sense (sensitivity-nerve ending)

Question 8

Epithelial Tissues subclasses

Answer 8

(named by the number of cell layers and cell shape at the apical layer)

• simple squamous
• simple cuboidal
• simple columnar
• pseudostratified ciliated columnar epithelium
• stratified squamous
• stratified cuboidall (rare)
• stratified columnar (rare)
• transitional

Question 9

Simple

Answer 9

1 layer thick (tall)

Question 10

squamous

Answer 10

flattened

Question 11

simple squamous

Answer 11

• one layer of flattened cells
• good exchange
  – (e.g. alveoli of lungs)
• good lining
  – (e.g. endothelium of blood vessels)

Question 12

What does the endothelium do?

Answer 12

keeps blood moving smoothly

Question 13

cuboidal

Answer 13

boxy shape

Question 14

simple cuboidal

Answer 14

• one layer of boxy cells
• exchange
  – (e.g. kindey tubules)

Question 15

Columnar

Answer 15

tall cells

Question 16

simple columnar

Answer 16

• one layer of tall cells
• absorption and secretion
  – (e.g. intestinal lining)

Question 17

pseudostratified ciliated columnar epithelium

Answer 17

• one layer of tall (some are taller than others) hairy looking at the top
  – (e.g. trachea lining)

Question 18

Stratified

Answer 18

multi-layered

Question 19

stratified squamous

Answer 19

• muti-layered, flat cells ar apex ledge (free ledge)
• common
• protection
  –can be nonkeratinized (e.g. inside mouth)
  – or keratinized (e.g. epidermis)