Histology Notes

1. CONNECTIVE TISSUE
WITH SPECIAL
PROPERTIES
ADIPOSE
RETICULAR
PIGMENTED

2. ADIPOSE TISSUE
• LOOSE C.T.
• ADIPOSE CELLS
• SIGNET RING POLY HYDERAL
• CENTRAL DROPLET VIMENTIN
• BASAL LAMINA
• YELLOW & BROWN FAT
• ENERGY STORAGE TRIGLYCERIDES

4. YELLOW FAT BROWN
FAT
• ADULTS • EMBRYO
• WHITE YELLOW INTERSCAPULAR &
• INGUINAL
UNILOCULAR
• BROWN
• SIGNET RING
ADIPOCYTE • MULTILOCULAR
• VASCULARIZED • NUCLEUS ECCENTRIC
• MITOCHONDRIA
CYTOCHROME
OXIDASE
• INCREASED
VASCULRATIRY &
INNERVATION

6. ELASTIC CONNECTIVE
TISSUE
• YELLOW ELASTIC
• LIGAMENTS OF VERTEBRAL
COLUMN ELASTIC ARTERY
• BUNDLES OF ELASTIC FIBERS
• FIBROBLAST

8. RETICUALR CONNECTIVE
TISSUE
• RETICULAR CELLS & FIBERS
• THREE DIMENSIONAL SPONGY
NETWORK
• PROCESSES OVERLAP FIBERS
• RETICULAR FRAMEWORK OF
HAEMOPOIETIC & LYMPHOID
ORGANS

10. CARTILAGE

11. CARTILAGE
LOAD BEARING
AVASCULAR C.T.
CELLS
HIGHLY SPECIALIZED
MATRIX

12. CLASSIFICATION
• HYALINE
ARTICULAR
NONARTICULAR
• ELASTIC
• FIBROUS

13. HYALINE NON ARTICULAR
CARTILAGE
• BLUISH HOMOGENOUS GLASSY
• SOLID FIRM & RESILIENT
• PERCHONDRIUM
• CHONDROCYTES
• MATRIX
FIBERS & GROUND SUBSTANCE

14. PERICHONDRIUM
• FIBROUS LAYER
DENSE IRREGULAR C.T
FIBROBLAST
BLOOD VESSELS NERVES & LYMPH VESSELS
• CELLULAR LAYER
COLLAGEN FIBERS
CHONDROGENIC CELLS
• ESSENTIAL FOR GROWTH &
MAINTENANCE

16. CELLS
• CHONDROGENIC
STEM CELLS FIBROBLAST
• CHONDRBLAST
FIBERS & GROUND SUBSTANCE
• CHONDRO CYTE
ISOGENOUS GROUP
LACUNAE

17. FIBERS
• COLLAEGEN
• TYPE II, IX, X,XI
• NOT VISIBLE UNDER THE
LIGHT MICROSCOPE
• THINNER FIBRIL
• REFRACTIVE INDEX
• 64 nm PERIODICITY

18. GROUND SUBSTANCE
• BASOPHILIC MORE MARKED AROUND
ISOGENOUS GROUPS
• TERRITORIAL & INTERTERITORIAL
MATRIX
• FIRM HIGHLY HYDRATED
• PROTEOGLYCAN
CHONDROITIN & KERATAN SO4 (PROTEOGLYCAN)
HYALURONIC ACID
• GLYCOPROTEINS CHONDROCYTE & MATRIX
• ANCHARIN TENASCIN FIBRONECTIN
• RESILIENCE DIFFUSION SHOCK

21. LOCATION
• EMBRYONIC SKELETON
• LARGER RESPIRATORY
PASSAGES
• LARYNGEAL CARTILAGES
• COSTAL CARTILAGE
• EPIPHYSEAL PLATE

22. HYALINE ARTICULAR
CARTILAGE
• ARTICULAR SURFACE OF BONES
• NO PERICHONDRIUM
• ZONE I
• CELLS ARE FLAT // TO SURFACE
• // COLLAGEN FIBERS
• ZONE II
• CELLS LARGE ROUNDED SINGLY / GROUPS
• FIBERS ARE OBLIQUE
• ZONE III
• CELLS IN VERTICAL COLUMN
• ZONE IV CALCIFIED MATRIX

24. ELASTIC CARTILAGE
• EXTERNAL EAR, AUDITORY
TUBE, LARYNX
• HYALINE NON ARTICULAR
CARTILAGE
• YELLOWISH
• ELASTIC FIBER

26. FIBROCARTILAGE
• INTERVERTEBRAL DISC
FIBROCARTILAGE
• NO PERICHONDRIUM
• ACIDOPHILIC
• BUNDLES OF TYPE I COLLAGEN
FBERS REGULAR & IRREGULAR
WITH GROUPS OF
CHONDROCYTE