UNIT 3. LIFE PROCESSES. INTERACTION. THE LOCOMOTOR SYSTEM.

THE LOCOMOTOR SYSTEM ALLOWS US TO MOVE

OUR LOCOMOTOR SYSTEM HAS THREE PARTS:

1. BONES

2. MUSCLES 

3. JOINTS

shoulder

elbow 

wrist

Joints in the hand

hip

knee

ankle

Joints in the foot

 BONES, MUSCLES AND JOINTS WORK TOGETHER TO MOVE OUR BODY

FUNCTIONS OF THE SKELETON

SUPPORT OUR BODY

PROTECT THE DELICATE ORGANS INSIDE OUR BODY

THE SKULL PROTECTS THE BRAIN

THE RIBS PROTECT THE HEART AND THE LUNGS

Este link es de una web interesante sobre el esqueleto:   http://learnenglishkids.britishcouncil.org/fr/node/10500

En esta otra podréis revisar los sentidos y practicar las partes del cuerpo y el esqueleto: http://www.edu.xunta.es/espazoAbalar/sites/espazoAbalar/files/datos/1330417444/contido/thehumanbody.html

I hope you enjoy this vedeo!!

1. BONES

BONES ARE HARD AND RIGID (THEY DO NOT BEND)

TYPES OF BONES:

1. LONG BONES: HUMERUS, RADIUS, ULNA, FEMUR, TIBIA, FIBULA.

2. SHORT BONES: BONES IN HANDS AND FEET

3. FLAT BONES: SKULL, STERNUM, SCAPULA, PELVIS.

2. MUSCLES

MUSCLES ARE SOFT AND ELASTIC.

MUSCLES MOVE THE BONES BY CONTRACTING AND RELAXING.

FOR EXAMPLE, IN THE ARM, WHEN THE BICEPS CONTRACTS, THE TRICEPS RELAXES AND WHEN THE TRICEPS CONTRACTS, THE BICEPS RELAXES.

TYPES OF MUSCLES

1. VOLUNTARY MUSCLES: OUR BRAIN CONTROLS ITS MOVEMENT.

FOR EXAMPLE: BICEPS, TRICEPS, DELTOIDS, CALF MUSCLES...

2. INVOLUNTARY MUSCLES: THEY MOVE AUTOMATICALLY.

FOR EXAMPLE: HEART, MUSCLES IN THE STOMACH, INTESTINES...

3. JOINTS

JOINTS CONNECT BONES.

THERE ARE 3 TYPES:

1. FLEXIBLE/MOVABLE JOINTS: ALLOW OUR BONES TO MOVE A LOT: ELBOWS, KNEES, SHOULDERS.

2. SEMI-FLEXIBLE/SEMI-MOVABLE JOINTS: LET OUR BONES TO MOVE A LITTLE: SPINE.

3. FIXED JOINTS: THEY CAN'T MOVE: JOINTS IN THE SKULL

BONES OF THE SKELETON

MUSCLES OF THE BODY