Ch. 5 Tissues

Question 1

similar cells with a common function

Answer 1

tissue

Question 2

study of tissues

Answer 2

histology

Question 3

close space between cells, located among cells that form linings

Answer 3

tight junctions

Question 4

form “spot welds” between cells, located among outer skin cells

Answer 4

desmosomes

Question 5

tubular channels between cells, located in cardiac muscle cells

Answer 5

gap junctions

Question 6

General characteristics of Epithelial Tissue

Answer 6

• covers organs and the body
• line body cavities
• line hollow organs
• have a free surface
• have a basement membrane
• avascular
• cells readily divide
• cells tightly packed
• often have desmosomes
• function in protection, secretion, absorption and excretion
• classified according to cell shape and number of cell layers

Question 7

Simple

Answer 7

1 layer

Question 8

stratified

Answer 8

many layers

Question 9

squamous

Answer 9

flat (tile shaped)

Question 10

cuboidal

Answer 10

cube shaped

Question 11

columnar

Answer 11

column shape

Question 12

pseudo

Answer 12

false

Question 13

Simple Squamous characteristics

Answer 13

• single layer of flat cells
• substances pass easily through
• line air sacs
• line blood vessels
• line lymphatic blood vessels

Question 14

Simple cuboidal characteristics

Answer 14

• single layer of cube shaped cells
• line kidney tubules
• cover ovaries
• line ducts of some glands

Question 15

Simple Columnar characteristics

Answer 15

• single layer of elongated cells
• nuclei usually near basement
• membrane at same level
• sometimes posses cilia sometimes microvilli
• often have goblet cells
• line uterus, stomach, intestines

Question 16

secretor of mucus

Answer 16

goblet cell

Question 17

Pseudostratified columnar characteristics

Answer 17

• single layer of elongated cells
• nuclei at two or more levels

Question 18

Stratified squamous characteristics

Answer 18

• many cell layers
• top cells are flat
• can accumulate keratin
• outer layer of skin
• line oral cavity, vagina, and anal canal

Question 19

protein that kills old skin cells

Answer 19

keratin

Question 20

Stratified cuboidal characteristics

Answer 20

-2 to 3 layers
- cube shaped cells
- line ducts of mammary glands, sweat glands, salivary glands, and pancreas

Question 21

Stratified columnar characteristics

Answer 21

• top layer of elongated cells
• cube shaped cells in deeper layers
• line part of male urethra and part of pharynx (throat)

Question 22

Transitional characteristics

Answer 22

• many cell layers
• cube shaped and elongated cells
• line urinary bladder, uterus, and part of urethra

Question 23

composed of cells that are specialized to produce and secrete substances

Answer 23

Glandular Epithelium

Question 24

2 types of Glandular Epithelium

Answer 24

endocrine glands and exocrine glands

Question 25

What's the difference between endocrine glands and exocrine glands

Answer 25

endocrine glands are ductless and exocrine glands have ducts

Question 26

composed of one cell and a goblet cell

Answer 26

unicellular exocrine glands

Question 27

composed of many cells, sweat glands, salivary glands, etc..., simple and compound

Answer 27

multicellular exocrine