Chapter 4 - The Tissue Level of Organization Notes Flashcards Preview

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Flashcards in Chapter 4 - The Tissue Level of Organization Notes Deck (100)
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1

how many types of cells are in teh body

about 200

2

what is the study of tissues

histology

3

how many types of tissues in body

4

4

what are the types of tissues in body

epithelial
connective
muscle
neural

5

epithelial tissue includes:

glands

6

epithelial tissues cover

internal and external surfaces

7

glands are

secretary structures that are made from epithelial tissue

8

the skin is

epithelium tissue

9

what lines the gi tract, respiratory tract, reproductive and urinary tracts

epithelium tissue

10

characteristics of epithelium

cellularity
polarity
attachment
avascularity
regeneration

11

function of epithelial tissue is

provide physical protection, control permeability, provide sensation, and produce specialized secreations via glandular epithelium

12

epithelia that line pasageways have ___ present

microvilli

13

where is stereocilia found

male reproductive tract and the inner ear

14

epithelia attaches to other cells by _______

cell junctions

15

how many types of cell junctions

3

16

what are the cell junctions

tight junctions
gap junctions
desmosomes

17

epithelia can be classified by

shape
based on view under microscope

18

what are the shapes for epithelia

squamous
cuboidal
columnar

19

also can classify epithelia by

number of layers

simple or stratified

20

squamous epithelium

thin flat and irregular in shape

21

simple squamaous is found

where absorption takes place or where a slick surface is required to reduce friction

22

mesothelium

a specialized epithelium that does not contact the outside world, they line the ventral body cavities, the pleura peritoneum and pericardium

23

endothelium

simple epithelia that line the heart and all blood vessels.

24

stratified epithelial is found

where mechanical stress is severe

25

cuboidal epithelial

provide limited protection, and are located where secretions are promient

26

stratified epithelial cells are rare but can be found in the

sweat and mammary glands

27

columnar epithelium

apear rectangular and are tall and slender.

28

simple columnar is found

in areas of scretion and absorption and function to protect lining from chemical stress (intestines)

29

glandular epithelia - endocrine

secretions which are hormones, are released into the surrounding interstital fluid and blood

30

glandular epithelia - exocrine

the secretions usually enzymes are released into the skin or other epithelial surfaces.