Exam 1 Part 4 Flashcards Preview

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Flashcards in Exam 1 Part 4 Deck (33):
1

stratified cuboidal ET

2-3 layers; sweat and salivary glands

2

stratified columnar ET

not common

3

Transitional ET

similar to stratified squamous ET but surface cells rounded
capable of changing shape to allow for istention; urinary system (bladder + ureters)

4

pseudostratified columnar ET

appears stratified but each cell contacts basement membranes; not all cells exposed
may be ciliated and associated with goblet cells that secrete mucus
in respiratory system cilia help move mucus/particles and direct to digestive system

5

sensory epithelia

associated with nervous tissues
-connects to nervous cells

6

Glandular epithelia

cell, tissue, or organ that produces and secretes a substance for use in or elimination from the body

7

Gland

can be one cell or many

8

Gland types

exocrine
endocrine

9

exocrine gland

secrete products into ducts or to lumen of organ
-eventually goes outside body

10

exocrine gland examples

salivary glands
pancrease (digestive enzymes)
sebacous -oils
mammary glands and sweat glands
goblet cells

11

endocrine gland

secrete hormones directly into blood capillaries
stay with body

12

endocrine gland examples

thyroid gland
adrenal gland
pancreas (insulin/glucagon

13

glandular epithelia

cells doing the secreting

14

Connective Tissue

most abundant tissue in body; very diverse
provides support -structurally and metabolically for other tissues
cells well separated -extensive matrix
capable of mitosis
most are highly vascularized

15

CT functions

support
transport (blood)
protection
binding
fills space (fat)
storage (fat, bone (Ca2+))
insulation, cushions

16

CT types

connective tissue proper
supportive connective tissue
fluid connective tissue

17

Cell types in CT proper

fibroblasts
adipocytes

18

fibroblasts

produces fibers in matrix
large, flat, branched
CT proper

19

adipocytes

fat cells
CT proper

20

Cell types in supportive CT

chondrocytes
osteocytes

21

chondrocytes

mature cell of cartilage

22

osteocytes

mature cell of bone

23

blood cells

RBC, WBC (platelets)
(some WBC leave the blood and wander tissues)

24

Matrix of CT can be

liquid
largely fibrous
solid

25

Fibers of CT proper

collagen
elastic
reticular

26

Collagenous fibers

protein called collagen
very tough, flexible, whitish, resist stretching
-ligaments, tendons, skin

27

Elastic fibers

protein elastin
stretch and recoil, yellowish
ex. arteries, respiratory passages, skin

28

reticular fibers

protein called reticulin
delicate, form network, not individually strong
ex. lymph nodes, spleen, liver

29

ground substance

H2O, minerals, macromolecules
varies from viscious fluid to solid
surround/contains cells and fibers
NOT matrix

30

CT =

ground substance + fibers + cells

31

CT proper types

Loose
Areolar
Reticular

32

loose CT

most general type, no regular arrangement
binds and packs tissues, connects skin and muscle (fascia) surrounds nerves and blood vessels
highly vascular
holds interstitial fluid
collagen and elastic fibers, fibroblasts, some immune cells
flexible in all directions

33

adipose tissue

mostly adipocytes, few fibers
stores fat, cushions organs, insulates
organelles pushed to edges; appears empty, colorless
energy storage throughout body