Unit 2: Notes 1 Flashcards Preview

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Flashcards in Unit 2: Notes 1 Deck (27)
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1

what are tissues?

groups of similar cells, with common embryonic origin, that function together to carry out specialized at Tiffany's

2

what is histology

The study of tissues

3

what is a pathologist

Studies cells and tissues to help other physicians make diagnosis

4

what are the four types of tissue

epithelial, connective, muscle, nervous

5

what is epithelial tissue

-covers body surfaces exposed to environment (skinway, airway)
-Lines body cavities, hollow organs, ducts
-forms glands

6

what is connective tissue

- fills internal spaces
- protects and supports body and organs
- binds organs
- transports
- provides immunity
- stores energy

7

what is muscle tissue

-specialized for contraction
•skeletal, cardiac, smooth
-generates force needed to move body

8

what is nervous tissue

- detects change inside and outside body
-carries electrical signals

9

what are the two types of epithelial tissue

covering and lining and glandular

10

what do the covering and lining of epithelial tissue do and in what forms are they in?

covers external surfaces

forms: digestive, respiratory, urinary

11

what does the glandular epithelial tissue do and what form does it come in

produce fluid secretions (sweat and hormones)

forms: various glands including the sweat glands

12

what are the functions of epithelial tissue

- provide physical protection
- Controls permeability
- provide sensation
- produce specialize secretions: protection or chemical messengers (hormones)

13

what are the general features of all epithelial tissue

1. closely packed cells
2. three surfaces
3. avascular
4. has a nerve supply
5. has a high capacity for renewal

14

what are the closely packed cell's structure in epithelial tissue

continuous sheets of single or multi layers

15

what are the three surfaces in all epithelial tissue

apical: top/superficial layer, exposed to body
lateral: side layer
Basal: bottom/Deep layer, attached to basement membrane

16

why does epithelial tissue have a high-capacity for renewal

because of wear and tear and injury

17

how does one classify epithelial tissue

by the number of cell layers in cell shape

18

what is simple

One cell layer

19

what is stratified

two or more layers

20

what is pseudostratified

false; appears to have multiple layers

21

what is squamous

thin and flat

22

what is cuboidal

tall and wide

23

what is columnar

secretion/absorption

24

what is transitional

changes shape as organ stretches

25

what are endocrine glands

secrete hormones directly into bloodstream

26

what are exocrine glands

secrete hormones into ducts

27

what does avascular mean?

no blood vessels