FUNCTIONAL ANATOMY

Skeletal System What is the Skeletal System? What is the Skeletal System? It is the bones, tendons, ligaments and cartilage that connects them all together. It is the bones, tendons, ligaments and cartilage that connects them all together.

Skeletal System How does the Skeletal System help us? How does the Skeletal System help us? 1. SUPPORT. It supports our body, without we would be a pile of guts and skin on the ground. 2. PROTECTS. It protects our vital organs and body tissue, E.g. Brain, eyes, heart etc… 3. MOVEMENT. Provides the structure for us to be able to move.

Skeletal System ACTIVITY: Complete the table. Common NameScientific Name Skull Jaw Bone Collar Bone Shoulder Blade Breast Bone Funny Bone Spine Hips Wrist Ankles Thigh Bone Knee Cap Shin Bone

Muscular System The Muscular system can be described as having either voluntary (controlled) or involuntary ( no direct control) muscles. The 3 main types of muscles are; 1. Smooth muscle are found in blood vessels or in the intestinal walls are usually internal involuntary muscle. 2. Cardiac muscle are found in the walls of the heart and are involuntary. 3. Skeletal muscle are external voluntary muscle like biceps and quads.

Muscular System Skeletal Muscle: Attach to and cover the bony skeleton. Skeletal muscle fibres have the longest muscle cells; they have obvious stripes called striations and can be controlled voluntarily. Skeletal muscle is responsible for overall body movement. It contracts fast, but tires easily, but can generate great amounts of force, and is easily adaptable. Attach to and cover the bony skeleton. Skeletal muscle fibres have the longest muscle cells; they have obvious stripes called striations and can be controlled voluntarily. Skeletal muscle is responsible for overall body movement. It contracts fast, but tires easily, but can generate great amounts of force, and is easily adaptable.

Muscular System Skeletal Muscle Fibre Types Skeletal Muscle Fibre Types There are 2 different types of muscle cells. Type 1: Fast twitch Type 1: Fast twitch Type 2: Slow twitch Type 2: Slow twitch Fast twitch muscles contract at faster rate but fatigue easily; they are good for sprinting and power. Slow twitch muscles contract slower, but don’t fatigue as fast; they are good for endurance.. Research states that all fibre types are changeable with training, so higher intensity training creates fast twitch muscles (anaerobic), and low intensity trainings creates slow twitch muscles (aerobic). Fast twitch muscles contract at faster rate but fatigue easily; they are good for sprinting and power. Slow twitch muscles contract slower, but don’t fatigue as fast; they are good for endurance.. Research states that all fibre types are changeable with training, so higher intensity training creates fast twitch muscles (anaerobic), and low intensity trainings creates slow twitch muscles (aerobic).

Muscular System ACTIVITY: Fill in the muscles using correct anatomical names Fill in the muscles using correct anatomical names

Synovial Joints Synovial joints are freely movable, and the bones are separated by fluid containing joint cavity. This allows the freedom of movement. Most joints of the body fall into this class. Synovial joints are freely movable, and the bones are separated by fluid containing joint cavity. This allows the freedom of movement. Most joints of the body fall into this class.

Synovial Joints

There are 2 types of synovial joints; 1. Hinge joint. Allows back and forth movements like bending and straightening. Eg knee and knuckle. 2. Ball and socket joint. Allows side to side, back and forth and rotational movements. It is held in place by ligaments. Eg shoulder and hip.

Synovial Joints ACTIVITY. What type of joints are the following? 1. Knee 2. Elbow 3. Shoulder 4. Hip

Movements How does movement happen? Muscle cells have contractile components. This means that they have the ability to shorten and lengthen. Muscle is attached to bone via and lengthen. Muscle is attached to bone via connective tissue called tendons. When a muscle contracts it pulls on the bone over a joint and contracts it pulls on the bone over a joint and creates movement. Muscles work in pairs. When one muscle in a pair shortens the other must lengthen to allow the movement to occur.

Movements Flexion and Extension. Flexion is the bending or decreasing of the angle between the bones. Eg. Bending your arm through flexion at the elbow. Extension is the straightening or increasing of the angle of the bones. Eg. Straightening your leg by extension at the knee.

Movements Abduction and adduction. Abduction is the movement of the bone away from the midline. Eg. Doing a lateral raise. (movement on the way up.) Adduction is the movement of the bone towards the midline. Eg. In the lateral raise, (movement on the way down towards the body.)

Movements Dorsiflexion and plantarflexion. Dorsiflexion is the raising of the toes and foot towards the tibia. Plantarflexion is pointing of the toes.

Movements Inversion and eversion. Inversion is the movement of the sole of the foot inward at the ankle. Eversion is the movement of the sole of the foot outward at the ankle.

Movements Pronation and supination. Pronation is the crossing of the radius and the ulna, for eg when the palms are facing down. Supination is movement of the bones so the radius and ulna run parallel, for eg when your Palms are facing up.

Movements Circumduction. Circumduction is movement of the bone so that end describes a circle, and the bone make a cone around it. around it.

Movements ACTIVITY. Complete the table. Type of joint Movements Major muscles used in movement. KneeHinge Extension and Extension andflexion Quadriceps and hamstrings hamstrings Shoulder Elbow Hip