DK - WOW! The Visual Encyclopedia of Everything

59 Most vertebrates (animals with backbones) have strong bony skulls. They are made up of cranial bones that protect their brain ...

Cells Magnified 13,500 times, this is a false-colour SEM (scanning electron micrograph) of human blood. Red blood cells (red) ca ...

Human body 61 060_061_HumanBody.indd 61 03/01/19 12:09 PM ...

The body is constructed from trillions of tiny living units, known as cells. There are more than 200 different types of cells – ...

(^1) NERVE CELLS Found in the brain, spinal cord, and nerves, nerve cells, or neurons, carry and process high-speed electrical s ...

64 Shoulder joint is the most flexible joint in the body Hip joint is where the ball-shaped head of the femur fits into the cup- ...

65 Phalanges are the 14 slender bones that form the fingers and thumb Fibula is the smaller bone of the lower leg Phalanges are ...

Every body movement, whether it’s a leap in the air, a wink of the eye, a rumbling stomach, or a rapid heartbeat, is produced by ...

67 Gastrocnemius muscle pulls the Achilles tendon to bend the foot downwards Intercostal muscles move the ribs during breathing ...

BODY SYSTEMSThe body’s trillions of cells are highly organized. Cells of the same type are grouped together in tissues. Two or m ...

69 DIGESTIVE SYSTEM ▶ The body needs nutrients for energy, growth, and repair. The digestive system breaks down food to release ...

The body’s trillions of cells require an uninterrupted supply of oxygen to release the energy they need to stay alive. They get ...

3 BRONCHIOLES AND ALVEOLI The narrowest bronchioles end in 300 million air-filled bags called alveoli that fill most of the lung ...

72 Flowing all around your body, blood delivers food, oxygen, and other essentials to trillions of cells and removes their waste ...

73 Oxygen-carrying red blood cells make up 99 per cent of all blood cells. Every second, two million new red blood cells are mad ...

Skin is the body’s protective overcoat, forming a barrier between vulnerable body tissues and the harsh, changing conditions of ...

75 (^4) FINGERNAIL Ideal for gripping objects and scratching itches, fingernails are clear plates that protect the sensitive upp ...

BRAINSafely inside the skull, the brain allows us to sense, think, learn, remember, and move. It also automatically regulates vi ...

3 PREMOTOR CORTEX Learned movement skills, such as playing tennis, are controlled and coordinated by the premotor cortex. It tel ...

Our senses make us aware of the world around us, and the changes that are happening in it. The eyes detect light waves, and the ...