(1) Giving the body its shape
(2) Protecting the vital internal organs
(3) Allowing for movement
(4) Storing minerals and producing blood cells
The skeletal system has 6 basic components: the skull, spinal column, thorax, pelvis, and the upper and lower extremities. The bones of the adult skeleton are classified by size and shape (long, short, flat, or irregular). The skull rest at the top of the spinal column and houses …show more content…
Ribs originate from it to form the chest (thoracic) cavity. The rest of the human skeletal is either directly or indirectly connected to the spine as well.
The spinal column is made up of irregular shaped blocks of bone called vertebrae that has great deal of mobility. Lying on top of one another they form the spinal column . Damage to the spinal cord will cause loss of sensation or movement distal to the injury, as for injury to the vertebrae (spinal column) will produce only pain. Intervertebral disk is a fluid-filled pad of tough elastic cartilage located between each two vertebrae. It acts as shock absorber and allows movement of the spine. They are extremely susceptible to injuries such as, improper lifting of heavy objects, or twisting and grinding.
Spinal Column The spinal column is composed of 33 vertebrae disk, which are divided into 5 parts: cervical, thoracic, lumbar, sacral, and the coccyx.
(1) Cervical spine, C1-C7 (neck). The first 7 vertebrae that form the cervical spine, and most prone to injury.
(2) Thoracic spine, T1-T12 (upper back). The 12 thoracic vertebrae that are directly below (inferior) the cervical spine and forms the upper back. Vertebrae is support by the 12 pairs of thoracic ribs that are attached to the spine …show more content…
The clavicle referred to as the collarbone is attached to the manubrium, which is the top (superior) portion of the sternum. The ribs are attached to the body of the sternum or also known as the middle segment. The lower (inferior) portion of the sternum is called the xiphoid process.
The Pelvis
The pelvis is a doughnut shaped structure consisting of several bones, including the sacrum and the coccyx. The iliac crest forms the wings of the pelvis, located at each side of the pelvis. The pubis is in the front (anterior) and lower (inferior) portion of the pelvis, and the ischium is in the back (posterior) and lower (inferior) portion of the pelvis. The pelvis forms the floor of the abdominal cavity. The pelvic cavity supports the intestines and houses the bladder, rectum, and internal reproductive organs in the human body.
Lower Extremities
The legs from the hip to the toes form the lower extremities. The hip joint is on each lateral side of the hip. The joint is made up of the pelvic socket, called the acetabulum, which fits the head of the femur