Histology 1- connective tissue Flashcards Preview

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Flashcards in Histology 1- connective tissue Deck (66)
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1

connective tissue is most _____ and ______

abundant, variable tissue in the body

2

2 types of connective tissue

1. embryonic
2. adult

3

2 types of embryonic connective tissue

1. mesenchyme
2. Mucous

4

2 types of adult connective tissue

1. connective tissue proper
2. specialized

5

5 types of connective tissue proper

1. loose (areolar)
2. reticular
3. dense regular
4. dense irregular
5. Adipose

6

2 types of specialized connective tissue

1. blood
2. supporting connective tissue
cartilage
bone

7

function of connective tissue

BIPCIST
Binds, support, strengthens
insulation
protection
compartmentalization
immune response
storage of energy reserves
transport

8

function: protection examples

bones- skull, vertebrae

9

function insulation example

adipose tissue

10

characteristics of connective tissue

1. cells in extracellular matrix
2. common origin
3. degrees of vascularity

11

connective tissue common origin is from what

mesenchyme cells

12

cells in extracellular matrix

few cells, very spread out. Most is extracellular matrix

13

degrees of vascularity

bone is highly vascularized
cartilage is avascular
dense connective tissue is somewhat vascularized

14

components of connective tissue

cells and ECM

15

components of ECM

protein fibers
ground substances

16

3 protein fibers types

1. collagen
2. reticular
3. elastic

17

what secretes protein fibers

cells in the ECM

18

ground substance

provides medium through which things can diffuse. can be fluid, gel like, or calcified, very hydrophilic

19

ground substances types

1. Glycosaminoglycans GAG
2. proteoglycans
3. multiadhesive glycoproteins

20

Glycosamineglycans (GAG)

hyaluronic acid and chondroitin sulfate

21

multiadhesive glycoproteins

laminin and
fibronectin

22

structural cells in connective tissue

fibroblast, chrondroblast, osteoblast, odontoblast- production of fibers and ground substances

23

immunologic cells in connective tissue

plasma cells, lymphocytes, eosinophil

24

defense cells in connective tissue

mast cells, basophils, macrophages, neutrophils

25

energy reserve/heat production

adipose cells

26

fibroblast

produce fibers and ground substances
most common type of cell in CT
produce and maintain ECM
large nucleus, cyto tapers out, spindle shape cells
2 levels of activity- quiesto, active

27

quiesto fibroblast cells

sit around, much smaller. fewer processes coming off from cell. smaller darker chromatin (heterochromatin) acidophilic, not a lot of translation

28

active fibroblast

abundant cytoplasmic processes, euchromatin ( not densely packed) cytoplasm full of rough ER. cyto more basophilic

29

mast cells

originate from bone marrow, migrating in down picture, large oval and rounded, small spherical shaped
strucutures - basophilic secretory granules, very small (inside)- contain certain substances, histamine -
have role in inflammatory, allergic, immune responses. Nice spherical central nucleus

30

plasma cells

Plasma cells- derived from B lymphocytes, responsible for synthesis
of antibodies. Very large. Basophilic cytoplasm, due to lots of Rough ER
spherical nucleus off to side.