connective tissue histo Flashcards Preview

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Flashcards in connective tissue histo Deck (24):
1

Loosely arranged cells and abundant stroma

CT

2

Embryonic origin of CT

Mesoderm

3

types of ct proper

Collagenous
Reticular
Elastic

4

types of collagenous tissue

loose
dense

5

type of collagenous tissue
> widely distributed
> superficial and deep fascia
> few collagen fibers

loose CT

6

types of collagenous tissue
> close packing of collagen fibers

DENSE CT

7

– collagen fibers in bundle randomly oriented
-dermis ,GIT submucosa , capsule of organs, periosteum / perichondrium

a. dense irregular

8

-fibers oriented in one direction and parallel to each other
-tendons , ligaments , aponeurosis

b. dense regular

9

> supporting framework of hematopoietic and lymphoid organs
> contains reticular fibers ( argyrophillic fibers ) surrounds other tissues and cells i.e. adipose , muscle , basal lamina , endoneurium , stroma of glandular organs

RETICULAR TISSUE

10

> slender , refractile fibers with elastin
> walls of hollow organs , blood vessels , trachea , bronchi yellow ligaments , suspensory ligaments

Elastic Tissue

11


Principal cells of the connective tissue
Synthesis of fibers and amorphous ground substance ( GAG )

Fibroblast

12

> Tissue Phagocytes

2. Macrophages ( Histiocytes ) :

13

CELLS FOR Heat production
Storage of neutral fats
“ Signet ring “ appearance

3. Fat cells ( Adipocytes ) :

14

Type of cells
Infrequent
usually seen in areas of inflammation
produces antibodies
“ cartwheel “ or “ spokewheel “ appearing nucleus
with Inclusion bodies called “ Russell bodies “

4. Plasma Cells :

15

type of cells
With granules containing heparin , histamine , and serotonin .
anaphylactic sensitivity reactions

mast cells

16

TYPE OF CT FIBER
> most numerous
> most abundant protein in the human body
> with tropocollagen molecules

Collagen fibers :

17

> Type I collagen

dermis , bone, tendon, fibrocartilage

18

Type II collagen

hyaline and elastic cartilage

19

Type III collagen

endomysium, smooth m., liver , spleen, kidney, lung

20

Type IV collagen

basal lamina

21

Type V collagen

Fetal membrane , blood vessels

22

distinctive cell of mucous connective tissue is a primitive fibroblast,

spindle-shaped or stellate.

Wharton’s jelly of the umbilical cord

mucuous CT

23

large , oval shape , “ signet ring “
appearance

Function : Fat storage
Insulation
Mechanical support

ADIPOSE TISSUE

24

Types of adipose tissue


Yellow / white
Brown / multilocular

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