chapter 3: The tissue

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1

name 4 primary tissue types

epithelial
muscular
connective
neural

2

epithelial includes

epithelia, which covers surfaces and glands, which are secretory structures derived from epithelia.

3

What is the function of epithelium

an avascular layer of cells that forms a surface, lining, or covering.

4

functions of epithelial tissue

protects, control permeability, sensation, produce specialized secretion

5

polarity

connect neighbor cells on their lateral surfaces

6

ciliated epithelium moves

materials across the surface

7

simple epithelium

has a single layer of cells covering the basal lamina

8

stratified epithelium (protection)

has several layers

9

squamous epithelium

thin and flat

10

cuboidal epithelium(secretion absorption)

short hexagonal bosses

11

columnar epithelium(secretion absorp and protection)

hexagonal but hey are tall and slender

12

transitional epithelium(stretch)

mixture of cuboidal and squamous

13

pseudostratified columnar epithelium

columnar cells

14

exocrine

secretes through ducts onto the skin

15

endocrine(hormones)

secretes into the blood, released by gland cells in to the interstitial fluid surround the cell

16

modes of secretion

merocrine-most common, released by exocytosis
apocrine-loss of both secretory product and some cytoplasm
holocrine-destroys the cell, which had become packed with secretory product before bursting.

17

all connective tissues have 3 components

sepcialized cells
extracellular protein fibers
ground substance

18

matrix is the combo of

protein fibers and ground substances

19

what is connective tissue

an internal tissue with many important functions including structured framework, transporting fluids and dissolved materials, protecting organs, defending body from infection

20

connective tissue proper refers to

all connective tissues that contain varied cell populations
2 types. fixed and wandering cells

21

fluid connect tissue

watery substance.
ex. blood and lymph

22

supporting connective tissues

2 types, cartilage and bone

23

3 types of connective tissues

collagen
reticular
elastic

24

all tissues derived from

embryonic mesenchyme

25

name 3 types of cartilage

hyaline (joints)
elastic (ear)
fibrocartilage (vertebrae)

26

bones has matrix consisting of

collagen fibers and calcium salts

27

Muscle tissue has 3 types

skeletal(volunatary)striated
cardiac(non volunatary)striated
smooth(non voluntary)nonstriated

28

neural tissues

conducts electrical impulses from one area of the body to another

29

tissues change with

age, repair and maintenance grow less efficient , and the structure and chemical composition of many tissues are altered.