Human Skeletal System

By: Ainsley tate & Abigail Gray

Major Function

  • The skeletal system protects the soft tissues that make up the rest of the organism

  • Also has attachment joints for the muscles to move at the joints.

  • Blood Cells are produced by red bone marrow which is located inside of our bones in the skeletal system.

  • Bones house calcium, iron, and energy as fat.

  • When children get older their bones grow with them creating a structure that holds up the rest of their body and other organ systems.

Diseases, and Disorders

  • Osteoporosis is a disease and that results in a loss of bone tissue. Also in osteoporosis bones lose calcium and become thinner and may disappear completely.

  • Scoliosis is a curve in the back and often looks like a C or S shape when looked at under an x-ray.

  • Arthritis can attack joints, that surround the tissue, or throughout the body. It affects the joints of the neck, shoulders, hands, lower back, hips, and knees.

  • Leukemia the cancer starts in the marrow of the bone. When dealing with this type of cancer different white blood cells multiply uncontrollably, affecting the amount of normal white blood cells and red blood cells

  • Bone Cancer is another disease of the skeletal system. It may begin in the bones or spread there from another part of body. Bone cancer in the united states only accounts for only about 1% of cancer cases.

  • Bursitis is disorder that causes pain in your joints. It usually affects the shoulders and the hips. It is caused by an inflammation of the bursa.

  • Thoracic Outlet Syndrome is a condition where an extra rib is created and squashes nearby blood vessels and nerves. It may create pain in the shoulder or neck, loss of limb feeling, blood clots, and many other problems

Major Organs

Axial Skeleton Division

  • Skull

  • Hyoid

  • Auditory Ossicles

  • Ribs

  • Sternum

  • Vertebral Column

Appendicular Skeleton Division

  • Upper Limbs

  • Lower Limbs

  • Pelvic Girdle

  • Pectoral (which is your shoulder) girdle (goes with picture of Axial and Appendicular Skeletal Divisions

Fun Facts

  • There are 5 types of bones they are Long, Short, Flat, Irregular, and Sesamoid

  • Adults have 24 ribs, but one in 500 people have an extra rib called a cervical rib

  • The longest bone in the human body is the thigh bone called the femur

  • Our teeth form part of the skeletal system, but are not counted as bones

  • Calcium is very important for our bones and help keep them strong and healthy

  • The medical branch of learning about the human skeletal system is called Orthopedics

  • Like our skin, the human body’s bones are also constantly worn down and made, to the point where every 7 years we essentially have a new bone.

  • The hyoid is the only bone in our body that is not connected to another bone

  • The oldest tumor ever recorded dates back to 120,000 or 130,000 years

  • Even though bones are stronger than steel they are not the strongest thing in our body. The strongest thing in our body is tooth enamel.