C.

Canals, semicircular, 77

Capillaries, 48

Carbohydrate, 14, 96 digestion of, 22

Carbon, 11, 13

Carbonic acid gas, 13, 25

Cartilage, 36

Cavity of the body, 43

Cell, 4 a chemical laboratory, 6 division of, 32, 105 exhaustion of, 102 movements of, 5, 31 nerve, 60, 87 spinal ganglion, 63

Centres, nervous, 63, 78, 88, 91

Centrosome, 31

Cerebellum, 84

Cerebral cortex, 86 hemispheres, 85

Chemical compounds, 2 needs of body, 11

Chemistry of the body, 8

Chords, vocal, 93

Cilia, 33

Circulation, 27, 97 course of, 28, 55 mechanism of, 48

Circulating fluids, 26

Clotting of blood, 104

Cochlea, 76

Cold, 83

Collagen, 24, 35, 96

Compounds, chemical, 2

Conductivity of protoplasm, 59

Connective tissue, 24, 35, 96

Conservation of energy, 92

Contraction of heart, 49 of muscle, 34

Cooking, 96

Cord, spinal, 63, 78

Corpuscles, red blood, 29 white blood (leucocytes), 45

Cortex, 86

Cough, 65, 67