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NERVE (continued)—
Muscle, 83

Functions of, 74

Odontoblasts, 44

Osteoblasts, 32

Pacinian bodies, 69

Parts of a tooth, 43
Passive tissues, 7

Perforating fibres of Sharpey, 33
Perichondrium, 23

Perimedullary lamellæ, 33

Periosteum, 35

Peripheral terminations of nerves, 64

Peripheric lamellæ, 33

Permanent dentition, 50

Physical properties of bone, 36

Primitive sheath of Schwann, 53

Production of elementary cells, 3

Properties and composition of blood, 107
Of nerves, 73
Of dentine, 45
Of enamel, 46

Protoplasm, 5
Pulp cavity, 43

Ranvier, nodes of, 55

Intersegmental substance of, 56

Retiform tissue, 7, 8

Schwann, primitive sheath of, 53

White substance of, 54

Segmentation of yelk, 3

Sharpey, perforating fibres of, 33

Spaces (Haversian), 33

Special enamel germ, 48

Spheroidal epithelium, 93

Spongy bone, 34

Squamous epithelium, 91

Structural elements of nerve tissue, 52

Sympathetic system of nerves, 71

System (Haversian), 32

Tactile corpuscles, 98

TEETH, development of, 47-49
Crusta petrosa of, 47
Temporary cellular cartilage, 22
Hyaline, 22

TISSUES, passive, 6, 7
Active, 6, 7, 52

Classification of, 7

TOOTH, 7, 43

Parts of, 43

Ultimate structure of lamellæ of bone, 33 Unstriated muscle, 83

Varicose nerve fibres, 56

Varieties of intercellular substance, 61

Nerve fibres, 58

Epithelium, 91

Vascular supply of bone, 35

Cartilage, 25

Muscle, 82

Vegetable cell, 2

Vitelline membrane, 3

White fibrous tissue, 7, 9

Nerve fibres, 52

White fibro-cartilage, 26

Substance of Schwann, 54

YELK, 3

Segmentation of, 3

Yellow elastic tissue, 7-10

Fibro-cartilage, 28

Zona pellucida, 3

DESCRIPTION OF PLATES.

PLATE I.

FIG. I. TRANSVERSE SECTION OF BONE.

a. Haversian canal.

b and c. Lacunæ and canaliculi concentrically arranged.

d. Haversian space.

FIG. 2. YELLOW ELASTIC TISSUE.

Showing fibres possessing a well-defined outline anastomosing, and curling up at the ends.

FIG. 3. WHITE FIBROUS TISSUE.

a and b. Lines produced by section of the lamellar prolongations of the cells between the bundles

of fibres.

FIG. 4. VERTICAL SECTION OF BONE.

a. Haversian canal branching.

b. Lacunæ and canaliculi.

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