Mrs. Degl1

2 Locomotion or movement involves the interaction of bones, cartilage, muscles, tendons, and ligaments. Bones: Bones are made of bone tissue and are hard and rigid. They provide support and protection for the soft parts of the body. They are the sites for muscle attachment. At joints, bones act as levers, letting the body move when muscles contract. Long bones have marrow that create new red and white blood cells.

Mrs. Degl3 Cartilage: Cartilage is a type of flexible, fibrous, elastic connective tissue. Babies are born with more cartridge than bones. This cartridge gradually hardens into bone. An adult nose, trachea, and ears are still mostly cartridge. Cartridge also provides cushions at joints. Joints: Joints are locations where bones attach to each other. Hinge joints move back and forth and allow the elbow and knee to bend. Ball-and-socket joints are capable of circular movement and allow the shoulder and hip to move. The neck has a pivot joint that can move in a half circle. The skull is made of immovable joints.

Mrs. Degl4 Muscles Muscles can contract Muscle is also a tissue All movement in the body involves muscles There are 3 types of human muscle tissue: 1.Skeletal Muscle 2.Smooth Muscle 3.Cardiac Muscle

Mrs. Degl5 Skeletal Muscle Skeletal Muscle is voluntary muscle that attaches to the bones of the skeleton. They are also called striated muscles. Skeletal muscles appear striated (striped). Skeletal muscles movements are controlled by the nervous system, which makes controlled movements possible. Triceps and biceps usually make opposite movements (when one contracts the other relaxes).

Mrs. Degl6 Smooth Muscle Smooth muscle is not striated. Smooth muscle is also called visceral muscle. Smooth muscle is found in the walls of the digestive organs and arteries as well as other internal organs. Smooth muscles are not under voluntary control. They are involuntary.

Mrs. Degl7 Cardiac Muscle The cardiac tissue found only in the heart. This muscle is not under voluntary control. It is very different than skeletal muscle.

Mrs. Degl8 Tendons and Ligaments Tendons attach muscles to bone. Ligaments attach bones to other bones.

Mrs. Degl9 Disorders of the Locomotive System Arthritis is an inflammation of joints, which can be very painful and make movement difficult. Tendonitis is an inflammation of a tendon, usually where it is attached to the bone. This occurs often in athletes and people who use the same tendons over and over again.