Histology of
Muscular Cartilage Bone

Type of muscle

Skeletal muscle

Cardiac muscle

Smooth muscle

Voluntary control

Striated muscle

100-1,000 nuclei in each muscle fiber

Elongated or ovoid eccentric nucleus

Involuntarily

Smooth muscle is innervated by visceral motor nerves.

Involuntarily

1-2 nuclei in each 1 fiber

อวัยวะภายใน

Histology of muscle

Skeletal muscle

Smooth muscle

Cardiac muscle

Muscle fiber

M-line

H-band
Thick filament

Light band (I-band)
• Thin filament

Dark band (A-band)
• Thick and Thin filaments

Myofibrill

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

Muscle cell

Fusiform Muscle fiber

1nucleus in each 1 fiber

Concentric nucleus

Concentric nucleus

No sacroplasmic reticulum

No T-tubule

Cartilage

มี chondrocytes อยู่ในแอ่งlacunae

neither vascularized nor supplied with nerves or lymphatic vessels

extracellular matrix

glycosaminoglycans

proteoglycans

3types

Hyaline cartilage

Fibrocartilage

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

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

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

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Type of Bone

LONG BONES

SHORT BONES

FLAT BONES

IRREGULAR BONES

BONE TYPES

SESAMOID BONES

Cells of Bone

Bone tissue

Compact bone tissue

Spongy bone tissue

hard outer layer, gives bones their smooth, white, and solid appearance, accounts for 80% of the total bone mass

A network of rod- and plate-like elements, room for blood vessels and marrow ,remaining 20% of total bone mass

Bone formation

Osteoblast

Osteocyte

Osteoblasts are located on the surface of the bone in a sheet-like arrangement of cuboidal to columnar cells

Osteocytes are mature bone cells, transformed from osteoblasts

Intramembranous ossification

Endochondral ossification

Calcified without cartilage model

Cartilage model serve as the
precursor of the bone

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