Muscle Contraction: The Skeletal Muscle Movement

Skeletal muscle moves because we want it to. It is controlled voluntarily (consciously).
There is 2 types of contraction
Isometric: As the muscle contracts, it remains the same length whilst the tension increases in an attempt to overcome the opposing force. Example: Holding a glass of water still in front of you.
Isotonic: As the muscle contracts its length changes whilst the tension remains constant or develops to overcome the opposing force. Example: Lifting a glass of water to your mount and lowering in back onto the table.
Skeletal muscle needs to pass over a joint to create movement. Muscle contraction pulls one bone towards another and thus moves the limb. Muscles never work alone; it takes a group of muscles for movement. Mostly
Protection: The skeleton protects many vital organs. The skull protects the brain eyes and middle ears. The vertebrae protects the spinal cord. The ribs protect the spine and sternum. It also protects the lung, heart and major blood vessels, clavical, scapula, the shoulder. The ileum and spine protect the digestive and urogential system and the hip. The patella protects the knee and the carpals and the tarsal’s protect the wrist and the ankle.
Movement: Joints between bones allow movement. Bones connect to bones with ligaments. Muscles connect to bones with tendons. Movement is powered by skeletal muscles which are attached to the skeleton at various sites on bones and are coordinated by the nervous system. A muscle function is to produce force and motion and movement of internal organs such as contraction of heart and the movement of food through the digestive system via peristalsis.
Shape:The upright posture is done by the axial skeleton and is shared with the appendicular skeleton, between them they give balance.
Blood cell manufacture: Production of blood cells that takes place in bone marrow, a site know as