The Skeletal System

By: Jordan Period: 7 Advanced Biology

Bones in this system...

The adult human skeletal system consists of 206 bones, as well as many tendons, ligaments, and cartilage that connects them. However, these are the general bones:

Skull, Clavicle, Scapula, Humerus, Ribs, Vertebrae, Radius, Ulna, Coxal Bone, Sacrum, Coccyx, Carpal Bones, Metacarpal Bones, Phalanges, Femur, Patella, Tibia, Fibula, Tarsal Bones, Metatarsal Bones, Phalanges.

The skeletal system supports and stores energy and minerals for other body systems!


The skeletal system performs essential functions. It provides support, movement, protection, blood cell production, calcium storage and endocrine regulation which enables us to move every single day of our lives. The most important functions are to make walking, running, and other movement possible and to protect the major organs responsible for digestion, excretion and reproduction.

Joints, Ligaments, and Cartilage...

Joints, or articulations, exist wherever two bones meet. The structure of a joint determines the type of movement that happens. Ligaments stabilize the anterior, posterior, medial, and lateral surfaces of any joint. They can be found outside or inside the joint capsule. Joints can be defined as three different types of cartilage: fibrous, cartilaginous, and synovial. There are different anatomical and functional properties of synovial joints that enable these skeletal movements.

Bones can be classified according to shape and structure...

Bone is a supporting connective tissue that contains all specialized cells and a matrix consisting of extracellular protein fibers, mixed in with ground substance. The texture of bones results from the deposition of calcium salts in the matrix. Flat bones are thin and relatively broad. Irregular bones have complex shapes that do not fit easily into main categories. Compact bones are solid, whereas a spongy bone resembles a network of bony rods separated by spaces.

Diseases/ Disorders...

Many of the disorders and diseases of this system are common and well-known today. Arthritis is a disease that affects synovial joints. It always involves damage to cartilages. The effects of arthritis are usually classified as inflammatory. You can also get carpal tunnel syndrome. This is inflammation of the tissues of the wrist that causes compression of nearby the wrists that causes compression of tendons and nerves. Symptoms are pain and a loss of wrist mobility. Spina bifida is a condition resulting from the failure of the vertebral laminae to fuse together during development. This often occurs with abnormalities of the spinal cord and brain. Luxation, a dislocation, is a condition in which the articulated surfaces are forced out of position. As a result of this, scoliosis can occur. This is an abnormal lateral curvature of the spine.

Biology Video: Learn about Human Skeleton
Skeletal System Rap
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