1. STRUCTURE AND MOVEMENT
The skeletal system and the muscular system work together to provide structure, enable movement and protect organ systems.
The human body is very flexible in the way that it can move and tasks it can perform.

2. STRUCTURE AND MOVEMENT
The skeletal system has 5 major functions:
It protects internal organs
It provides support and structure
It help the body to move
It stores minerals
Produces blood cells
The skeletal system is mostly bones.
Ligaments, tendons and cartilage are also parts of the skeletal system

3. STRUCTURE AND MOVEMENT
The Skeletal System
Storage: Bones are an important storage site calcium which is essential for many functions in the body.
Muscles require calcium for contractions
The nervous system requires calcium for communication
Protection: Many bones protect organs which are made of softer tissue.
The skull protects the brain
The rib cage protects the heart and lungs

4. Joints They allow bones to move in different ways
Moveable and immoveable
Hinge joints
Ball-and-Socket joint
Gliding joint
Pivot joint

5. Characteristics of Bones
Complex living structures that:
grow
develop
repair themselves

6. The Skeletal System Bones are organs that contain two types of tissue:
Compact bone – hard outer layer
Spongy bone –
inner region with many holes
There are 2 types of bone marrow:
Red bone marrow – produces red blood cells. White blood cells and platelets. Because it produces white blood cells it is part of the lymphatic system
Yellow bone marrow – yellow because of its high fat cell content. Produces fat, cartilage and bone.

7. Healthy Bones
Balanced diet and regular exercise

8. Muscle Muscle is a soft tissue found in most animals.
Muscle cells contain protein filaments of actin and myosin that slide past one another, producing a contraction that changes both the length and the shape of the cell.
Muscles function to produce force and motion.
Muscle Types

9. Voluntary and Involuntary Muscle
Voluntary muscles are under your conscious control and involuntary are not.

10. THE MUSCULAR SYSTEM Muscle cells are everywhere in the body
Almost half of your body mass is muscle cells
Skeletal Muscle –
It's attached to the bone and consists of muscle tissue, blood vessels, tendons, and nerves that cover our bones and allows movement.
Cardiac muscle –
Only found in the heart. Continuously contracts and relaxes
Smooth muscle –
moves materials through the body.
Found in organs such as the stomach, esophagus and bladder.
Blood vessels also have smooth muscle tissue.

11. How Skeletal Muscles Work
Skeletal muscles work in pairs, contract not lengthen. One contracts the other relaxes.

12. Healthy Muscles Regular exercise maintains strength and flexibility.
Individual cells become bigger so the whole muscle becomes thicker and stronger.
Warming up increases blood flow.
Stretching makes you more flexible and prepares them for exercise.

13. Muscle Injury
Strains occur when a muscle is overworked or overstretched.
Cramp is when a muscle contracts and stays contracted.
Ruptured Thigh Muscle
Cramp
Bicep Repair Operation 1
Bicep Repair Operation 2

14. Functions and structure of skin
Skin has two layers to protect the body
Regulates body temp
Eliminates wastes
Gathers environmental information
Produces vitamin D

15. Skin Structure

16. Keeping Your Skin Healthy
Healthy diet
Clean your skin
Limit your time in the sun