SISTEMA ESQUELÉTICO PARA INGLES, Diapositivas de Idioma Inglés

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The Skeletal System

What would happen if you did not have a

skeleton as shown?

What if humans

had no bones?

It serves as a framework for the human body.

It comprises bones and connective tissues,

including cartilage, tendons and ligaments.

Bones are living tissues with blood supply.

They constantly change and remodel as

humans grow.

The Skeletal System

skull

humerus^ ribs

radius

ulna

pelvis

femur

tibia

fibula

spine scapula

sternum

patella

Did you know that bones also

serve as storehouses for two

minerals: calcium and

phosphorus? These minerals are

essential for nerves and cells to

function properly.

Bones are classified according to their shapes.

Types of Bones

scapula vertebra

Flat Bone Irregular Bone

Has a flat surface Serves as a protector and a point of muscle attachment

Has a complex shape Has a variety of functions, such as protection and providing support

Support

It gives shape and

support to the body.

The spine, for

example, helps

humans maintain an

upright position.

coccyx (fused)

Functions of the Skeleton

The spine of an average

adult is made up of 26 bones.

sacrum (fused)

24 individual vertebrae

Movement

Functions of the Skeleton

Bones in the elbows and knees are joined by flexible joints.

These joints allow the bones to glide, swing or rotate.

Bones team up with

joints and muscles to

allow movement.

As muscles contract,

they pull on the bones,

enabling people to walk,

run, jump and engage in

various activities.

Producing

Blood Cells

Functions of the Skeleton

In adults, most blood cells are produced in the spine, hips, ribs and breastbone.

Blood cell production in children, however, takes place in the long bones like the femur.

Red and white blood

cells are produced in

the bone marrow —a

soft, spongy material

in the hollow centre of

a person’s bones.