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Connective and supporting tissue
1.
2. As its name implies, connective tissue connects,
holds, and supports other body tissues.
The cells of connective tissue are characteristically
separated from one another by large amounts of
intercellular material.
This extracellular material is that gives connective
tissue its strenght.
Parts of the connective tissue:
Cells
Extracellular matrix (ECM)
3. Two types of cells are present in the
connective tissue
FIXED MOBILE
Fibroblast (fibrocyte) Plasma cell
Fat cells (adipocyte) Mast cell
Melanocyte Histiocyte
Mesoblast (macrophage)
Reticular cell Lymphocyte
Granulocyte
4. Fibers Amorphous material
Collagen fibers GAG and
Elastic fibers proteoglycans
Reticular fibers Adhesion molecules
Microfibrils
5. Mesenchyma
Embryonic
Wharton s jelly
Areolar
Rich in cells Reticular
Spinocellular
Mature
Loose
Rich in fibers Regular
Dense
Irregular
19. Cartilage consists of cells (chondrocytes)
and an extensive extracellular matrix
composed of fibers and ground substance.
3 forms of cartilage have evolved, each
exhibiting variations in matrix composition:
1. Hyaline cartilage
2. Elastic cartilage
3. Fibrocartilage
20. 1. Hyaline cartilage: in the articular surfaces of the
movable joints; the walls of larger respiratory
passages (nose, larynx, trachea, bronchi); the
ventral ends of ribs; and in the epyphyseal
plates of bones
2. Elastic cartilage: in the auricle of the ear; the
walls of the external auditory canals, the
auditory tubes, the epiglottis, and the cuneiform
cartilage in the larynx
3. Fibrocartilage: in the intervertebral disks; and in
articular meniscs
21. Perichondrium: outer layer (stratum fibrosum)
type I collagen, inner layer (stratum
chondroblasticum) rich of cells
The unit of cartilages: chondron
Chondrocyte: only one cell, or little groups of
cells, roundish shape, spherical nucleus
In hyaline cartilage: 2-4 chondrocytes
In elastic cartilage: 1-2 chondrocytes
In fibrous cartilage: 1-2 chondrocytes
Lacuna
Pericellular matrix
Territorial/capsular matrix
Interterritorial matrix
25. To identify the parts of hyaline cartilage:
perichondrium
chondron
chondrocyte
pericellular matrix
territorial matrix
interterritorial matrix
lacuna
30. To identify the parts of the fibrocartilage:
chondrocytes
collagen fibers
31. Schematic drawing of the bone
outer circumferential lamellae
Haversian system (osteon)
compact bone
Inner circumferential
lamellae
cancellous
(spongy) bone
osteocyte
Haversian
canal
Volkmann s
canal
34. To recognize the following structures:
osteon
outer and inner circumferential lamellae
interstitial lamellae
osteocyte
Volkmann s canal
Haversian canal
