What are the four main functions of the skeletal system

what are the four main functions of the skeletal system

What Are the Four Functions of the Skeleton?

Mar 28,  · The four primary functions of the skeletal system are to support muscles and tissue, protect the vital organs, allow movement of bones and muscles and serve as the storage center for immature blood cells and minerals. The skeletal system has bones that are vital to the human body. Support, Movement, and Protection The most apparent functions of the skeletal system are the gross functions—those visible by observation. Simply by looking at a person, you can see how the bones support, facilitate movement, and protect the human body. Figure 2.

The skeleton has five main functions:. The main functions of the skeletal system The skeleton has five main functions: Movement — the skeleton allows movement of the body as a whole and its individual parts. The bones act as levers and also form joints that allow muscles to pull on them and produce joint movements. Support and protection — the bones of the skeleton provide support for the body and also protect the organs found within it. For example, the cranium protects the brain, the ribs offer protection to the heart and lungs, the vertebrae protect the spinal cord and the pelvis offers protection to the sensitive reproductive organs.

Production of blood cells — certain bones in the skeleton contain how to get rid of hair loss bone marrow and the bone marrow produces red blood cells, white blood cells and platelets. Examples of bones that contain marrow are the pelvis, sternum, vertebrae and clavicle. Storage of minerals — the bones themselves are made of minerals and act as a mineral store for calcium and phosphorous, which can be given up if the body requires the minerals for other functions.

Attachment of muscles — the bones of the skeleton provide surfaces for the attachment of muscles. This is why bones are often irregular shapes and have bony points and grooves to provide attachment points.

2. Support

The skeletal system is the body system composed of bones, cartilages, ligaments and other tissues that perform essential functions for the human body. Bone tissue, or osseous tissue, is a hard, dense connective tissue that forms most of the adult skeleton, the internal support structure of the lovealldat.com: Lindsay M. Biga, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Mat. Mar 06,  · The most apparent functions of the skeletal system are the gross functions—those visible by observation. Simply by looking at a person, you can see how the bones support, facilitate movement, and protect the human lovealldat.com: J. Gordon Betts, Kelly A. Young, James A. Wise, Eddie Johnson, Brandon Poe, Dean H. Kruse, Oksana Ko. Mar 06,  · The skeletal system gives the body shape and form and helps to both protect and support the entire organism. Bone, cartilage, tendons, joints, ligaments and other connective tissues compose the skeletal system. The two main types of bone tissue are compact (hard and dense) and cancellous (spongy and flexible) tissue.

Figure 1. Bones Support Movement. Bones act as levers when muscles span a joint and contract. Bone , or osseous tissue , is a hard, dense connective tissue that forms most of the adult skeleton, the support structure of the body.

In the areas of the skeleton where bones move for example, the ribcage and joints , cartilage , a semi-rigid form of connective tissue, provides flexibility and smooth surfaces for movement.

The skeletal system is the body system composed of bones and cartilage and performs the following critical functions for the human body:. The most apparent functions of the skeletal system are the gross functions—those visible by observation.

Simply by looking at a person, you can see how the bones support, facilitate movement, and protect the human body. Figure 2. Bones Protect Brain. The cranium completely surrounds and protects the brain from non-traumatic injury.

Just as the steel beams of a building provide a scaffold to support its weight, the bones and cartilage of your skeletal system compose the scaffold that supports the rest of your body. Without the skeletal system, you would be a limp mass of organs, muscle, and skin. Bones also facilitate movement by serving as points of attachment for your muscles. While some bones only serve as a support for the muscles, others also transmit the forces produced when your muscles contract.

From a mechanical point of view, bones act as levers and joints serve as fulcrums Figure 1. Unless a muscle spans a joint and contracts, a bone is not going to move.

For information on the interaction of the skeletal and muscular systems, that is, the musculoskeletal system, seek additional content. Bones also protect internal organs from injury by covering or surrounding them. For example, your ribs protect your lungs and heart, the bones of your vertebral column spine protect your spinal cord, and the bones of your cranium skull protect your brain Figure 2.

An orthopedist is a doctor who specializes in diagnosing and treating disorders and injuries related to the musculoskeletal system. Some orthopedic problems can be treated with medications, exercises, braces, and other devices, but others may be best treated with surgery Figure 3.

Figure 3. Arm Brace. An orthopedist will sometimes prescribe the use of a brace that reinforces the underlying bone structure it is being used to support. In recent years, orthopedists have even performed prenatal surgery to correct spina bifida, a congenital defect in which the neural canal in the spine of the fetus fails to close completely during embryologic development. Orthopedists commonly treat bone and joint injuries but they also treat other bone conditions including curvature of the spine.

Lateral curvatures scoliosis can be severe enough to slip under the shoulder blade scapula forcing it up as a hump. Spinal curvatures can also be excessive dorsoventrally kyphosis causing a hunch back and thoracic compression. These curvatures often appear in preteens as the result of poor posture, abnormal growth, or indeterminate causes. Mostly, they are readily treated by orthopedists.

As people age, accumulated spinal column injuries and diseases like osteoporosis can also lead to curvatures of the spine, hence the stooping you sometimes see in the elderly. Some orthopedists sub-specialize in sports medicine, which addresses both simple injuries, such as a sprained ankle, and complex injuries, such as a torn rotator cuff in the shoulder.

Treatment can range from exercise to surgery. Figure 4. The head of the femur contains both yellow and red marrow. Yellow marrow stores fat. Red marrow is responsible for hematopoiesis.

On a metabolic level, bone tissue performs several critical functions. For one, the bone matrix acts as a reservoir for a number of minerals important to the functioning of the body, especially calcium, and potassium.

These minerals, incorporated into bone tissue, can be released back into the bloodstream to maintain levels needed to support physiological processes. Calcium ions, for example, are essential for muscle contractions and controlling the flow of other ions involved in the transmission of nerve impulses.

Bone also serves as a site for fat storage and blood cell production. The softer connective tissue that fills the interior of most bone is referred to as bone marrow Figure 4. There are two types of bone marrow: yellow marrow and red marrow. Yellow marrow contains adipose tissue; the triglycerides stored in the adipocytes of the tissue can serve as a source of energy.

Red marrow is where hematopoiesis —the production of blood cells—takes place. Red blood cells, white blood cells, and platelets are all produced in the red marrow.

Skip to main content. Search for:. The Functions of the Skeletal System Learning Objectives Define bone, cartilage, and the skeletal system List and describe the functions of the skeletal system. Career Connection: Orthopedist An orthopedist is a doctor who specializes in diagnosing and treating disorders and injuries related to the musculoskeletal system.

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