-BONES: They are the hardest parts of the body (femur, humerus)

-MUSCLES: They are soft and are under the skin (biceps, gluteus)

- JOINTS: They are the place where bones join together (elbow, knee)

-VOLUNTARY: We want to make some movements.

-INVOLUNTARY: We don´t want. We make them without thinking

1) It holds up our body 2) It protects the most delicate parts of our body

3) It helps move our body

-FRONTAL ….in the skull 1) In the head -PARIETAL…. in the skull

-NASAL………in the face

-RIBS2) In the trunk -VERTEBRAE

-STERNUM

-RADIUS -ULNA in the arm

-HUMERUS3) In the limbs

-FEMUR-TIBIA in the leg-FIBULA

1) MOVABLE…………………SHOULDER AND KNEE

2) SEMI - MOVABLE………. SPINE

3) FIXED……………………..SKULL

PARTS OF THE LOCOMOTORSYSTEM

MOVEMENT

THE FUNCTIONS OF THE SKELETON

BONES

JOINTS

Radius

Frontal Parietal

Nasal Ribs

Vertebrae

Sternum

UlnaHumerus

Femur

TibiaFibula

Eyelid muscle

1) In the head -MASSETER - EYELID MUSCLE

-ABDOMINALS 2) In the trunk -PECTORALS

-COSTAL MUSCLES-TRAPEZIUM-DELTOID

In the arms: BICEPS, TRICEPS 3) In the limbs

In the legs: QUADRICEPS, CALF MUSCLES and GLUTEUS

• The locomotor system has bones, muscles and joints.

• Bones form the skeleton.

• Muscles form the musculature.

• Joints can be movable, semi-movable or fixed.

MUSCLES

Masseter

Abdominalss

Pectorals

Costal muscles

Deltoid

Biceps

Triceps

Quadriceps

Calf muscles

Gluteus

Trapezium