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Scapula(shoulder blade)

Sternum(breastbone)

Humerus

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Ulna

Radius

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Metacarpals

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67 The Human Skeleton

Phalanges

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s on

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68

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Gliding joint

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69 Exploring Movable Joints

Hinge joint

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E EX

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70 The Three Classes of Levers ©

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71 Exploring Levers in the Body©

Pren

tice-

Hal

l, In

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First-class lever

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72

Th

e Sk

in

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73

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74 The Digestive System©

Pren

tice-

Hal

l, In

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Focu

s on

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75 Exploring the Heart©

Pren

tice-

Hal

l, In

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Rightatrium

Pacemaker

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Aorta

Septum

Leftatrium

Leftventricle

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Major vein from lower body to heart

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NC

E EX

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76

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E EX

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77 Exploring the Respiratory System©

Pren

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Hal

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E EX

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78

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79

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81 Exploring the Path of a Nerve Impulse©

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Muscle in hand

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E EX

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82

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E EX

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83

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84

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85

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86

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87

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88

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89

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