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Histology of Muscular Cartilage Bone, IMG_0516, IMG_0514, IMG_0515, IMG…
Histology of
Muscular Cartilage Bone
Type of muscle
Skeletal muscle
Voluntary control
Striated muscle
100-1,000 nuclei in each muscle fiber
Elongated or ovoid eccentric nucleus
Cardiac muscle
Involuntarily
1-2 nuclei in each 1 fiber
Smooth muscle
Involuntarily
Smooth muscle is innervated by visceral motor nerves.
อวัยวะภายใน
Histology of muscle
Skeletal muscle
Muscle fiber
M-line
H-band
Thick filament
Light band (I-band)
• Thin filament
Dark band (A-band)
• Thick and Thin filaments
Myofibrill
Smooth muscle
Muscle cell
Fusiform Muscle fiber
1nucleus in each 1 fiber
Concentric nucleus
Concentric nucleus
No sacroplasmic reticulum
No T-tubule
Cardiac muscle
Muscle cell
Ovoid shape
Intercalated disc connects between fibers [striated line]
Cylindrical Muscle fiber
Cytoplasmic organelles
Myofibrils
T-tubule and terminal cistern (Diad)
Purkinje cell
Modified cardiac cell involved with impulse conducting system
Cartilage
มี chondrocytes อยู่ในแอ่งlacunae
neither vascularized nor supplied with nerves or lymphatic vessels
extracellular matrix
glycosaminoglycans
proteoglycans
3types
Hyaline cartilage
located in the nose and larynx,articular cartilage
most abundant cartilage of the
body
Semi-translucent substance
Chondroblasts become entrapped in their own matrix in small individual compartments called lacunae
cartilage template of the long bones during embryonic development and constitutes the epiphyseal plates of growing long bones
Fibrocartilage
Chondrocytes are often aligned in alternating parallel rows with the thick, coarse bundles of collagen
Present in intervertebral disks, in the pubic symphysis, in articular disks
fibrocartilage does not possess a perichondrium
Elastic cartilage
elastic fiber > collagen)fiber
located in the pinna of the ear the epiglottis, and the larynx (cuneiform cartilage)
Chondrocytes of elastic cartilage are more abundant and larger than those of hyaline cartilage
Type of Bone
LONG BONES
SHORT BONES
FLAT BONES
IRREGULAR BONES
BONE TYPES
SESAMOID BONES
Cells of Bone
Osteoblast
Osteoblasts are located on the surface of the bone in a sheet-like arrangement of cuboidal to columnar cells
Osteocyte
Osteocytes are mature bone cells, transformed from osteoblasts
Bone tissue
Compact bone tissue
hard outer layer, gives bones their smooth, white, and solid appearance, accounts for 80% of the total bone mass
Spongy bone tissue
A network of rod- and plate-like elements, room for blood vessels and marrow ,remaining 20% of total bone mass
Bone formation
Intramembranous ossification
Calcified without cartilage model
Endochondral ossification
Cartilage model serve as the
precursor of the bone
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