Skeleton System The skeleton system is made up of 206 bones as an adult. Bones are arranged into two major divisions. The axial region which contains 80 bones and the appendicular region which contains 126 bones. The axial contains the Skull, Hyoid, Auditory Ossicles, Ribs, Sternum, and the Vertebral Column. The skull is composed of 22 bones which are fused together expect for the mandible. The 21 fused bone are separated in children to allow the skull and brain to grow but fused to give an adult outstanding protection of the brain. The mandible remains a moveable bone because it is also known as the jaw bone and forms the only moveable joint with the temporal bone. The temporal bone is one of the two bones that form parts of the sides and …show more content…
Most of a bone is filled with matrix and tiny bone cells and half of the matrix mass is water, the other half collagen protein and solid crystals of calcium carbonate and calcium phosphate. Inside the matrix are living bone cells found on the edges of bones and in small cavities. These little tiny bone cells have very important roles in the functions of the skeleton system. They allow the bones to grow and develop, be repaired following an injury or daily wear (getting older) and be broken down to release their stored minerals. The human body isn’t made of just one size bone. It consists of long, short, flat, irregular, and sesamoid. Long bones are longer than they are wide. Long bone also grow more than the other bones because throughout childhood you are growing. A hollow medullary cavity is found in the center of the long bones and serves as a storage are for the bone marrow. Examples: Femur and Tibia, Etc. Short bones are about the same size long and wide. The carpal bone of the wrist and the tarsal bones of the bones of the foot are the short bones in the body. The flat bones in the body vary in size and shape but have a common feature of being very thin in one direction. Because the bones are thin, they don’t have a cavity like the long bones have. The frontal, parietal. And occipital bones of the cranium and hip bones are some examples of flat bones. Irregular bones are the bones that don’t fit the …show more content…
Also is serves as anchors to the skeletal muscles. The bones in the act like a hard shell to protect the internal organs such as the brain, the skull is a hard barrier for most objects to go through. Another function is movement the system acts as attachment point for the skeletal muscles of the body. Joints provide movement for the bones and every skeletal muscle works by pulling two or more bones either closer or further apart from the body. The skeletal system also helps to maintain hematopoiesis in the bones. Which is where red bone marrow produces red and white blood cells in a process known as hematopoiesis. The red marrow is found in the hollow space inside of the bones cavity. Red bone marrow is mostly found in children because when you hit puberty the red bone marrow turns in yellow bone marrow. Last the bones provide storage for many different types of essential substances to facilitate growth and repair of the body. Calcium banks are located in bone which releases calcium into the blood stream when needed to reach other parts of the body. Bone cells also release osteocalcin which is a hormone that helps regulate blood sugar and fat deposition. The yellow bone marrow inside the long hollow leg bones store energy in the form of lipids. The skeleton system does amazing most people wouldn’t even think of and protects are human body
However some of the basic bone functions include storing of crucial nutrients, minerals and lipids, producing red blood cells for the body, protect the organs such as heart, ribs and the brain, aide in movement and also to act as a buffer for pH. With the differences in all of the bones there are four things that remain the same in each bone, their cells. Bones are made up of four different cells; osteoblasts, osteoclasts, osteocytes and bone lining cells. Osteoblasts produce and secrete matrix proteins and then transport the minerals into the matrix. Osteoclasts are responsible for the breaking down of tissue. The osteoblasts and osteoclasts are both responsible for remodeling and rebuilding of bones as we grow and age. The production of osteoclasts for resorption is initiated by the hormone, the parathyroid hormone. Osteocytes are the mature versions of osteoblasts because they are trapped in the bone matrix they produced. The osteocytes that are trapped continue making bone to help with strength and the health of the bone matrix. The bone lining cells are found in the inactive bone surfaces which are typically found in
An osteoblast is a “baby” bone cell whose main job is to secrete osteoid which forms the hardened, or calcified, bone matrix. Osteocytes are formed from osteoblasts. Osteocytes are the mature bones cells that have been completely differentiated. They are found in the lacunae of hard bone and have a spider-like appearance due to their canaliculi. Osteoclasts are a different type of cell formed from the mesenchymal cells. These cells are not related to osteoblasts or osteocytes. Their job is to basically “eat” the bone to create cavities and other hallow spaces during bone remodeling. Finally, the cells form differentiate to form fibroblasts and fibrocytes. These fibroblasts and fibrocytes secrete and form the matrix for fibrous connective tissue which is an essential component of the
This portion of the skeletal provides the main structural support for the body while also protecting the central nervous system and vital organs in the thorax (heart, lungs, etc.). Of primary importance is the adult vertebral column, consisting of 33 vertebrae divided into five groups and named according to the region of the body in which they are located. The upper seven are cervical vertebrae, followed in descending order by 12 thoracic vertebrae, five lumbar vertebrae, five sacral vertebrae fused into one bone as the sacrum, and four coccygeal vertebrae fused together into one bone called the coccyx. The sacral vertebrae and coccygeal vertebrae become fused in the adult, so there are only 24 movable vertebrae (Fig given
The axial skeleton is part of the skeleton where there is bones at the top and bottom of a vertebrate. The human skeleton has 80 bones and is made of 6 parts. The axial skeleton has 2 responsibilities. The first is to support and defend the organs in the dorsal and ventral cavities. The second is to make a surface for the muscles.
The skeleton is divided into two major parts: the axial skeleton and the appendicular skeleton. The axial skeleton forms the central axis of the body and includes skull, spine, ribs, and sternum. The appendicular skeleton includes the appendages, which are the shoulders, arms, hips, and legs.
The skeletal system is made of all the bones, connective tissues and joints in the body. Bones, cartilage are some of the bones that make up the Skeletal system. The Skeletal system helps perform important everyday functions, for example; support, movement and protection, etc. The skeletal system helps form blood cells. The skeletal system helps store calcium and phosphorus, which is important and beneficial to the other functions in the body.
The human body is made up of 12 different systems. Each system has a separate function while some do work together. One system is called skeletal system which is to serve as a support the body, mineral storage, energy storage (fat), blood cell production, movement (leverage), and protect the internal organs. (Martini, 112). With the help of the muscular system, it keeps us moving and makes us to do tasks that we don’t think about like swinging the arms while running. The average adult skeleton has 206 bones that are joined together by ligaments (bone to bone) and tendons (muscles to bone) to make a protective framework for the tissues and muscles. The vital organs are also protected by the skeleton, brain is covered with skull just like heart
The three functions of the skeletal system are to support, to allow movement, and to protect. The skeleton is the framework of the body and also cradles its soft organs, with it the body would be just a jelly mass it wouldn’t have no definite shape and would just collapse. It supports the softer tissues and provides points of attachment for more skeletal muscles to hold all of the parts of the body upright. For example, the bones of the legs as pillars to support the body trunk we stand up. It also supports the body against the pull of gravity. The skeletal allows movement. The skeletal muscle attached to the bones by tendons and uses the bones as a simple mechanical lever system to move the body and its parts. All together with the muscles
The function of bones in the body is to support and protect vital organs, keeps us upright, provide structure, produce red and white blood cells and store minerals.
The skeletal system consists of 206 bones and is made up of the axial and appendicular skeletons. The axial skeleton is the central line of the body which consists of the cranium, vertebral column and rib cage. It is for...
The skeletal system is made of bones. Bone is a connective tissue which plays an important role for the function of the body, it provides support and structure to our body, it helps muscles to cause motion, it stores calcium and release it when the body needs it. The aim of this essay is to talk about what is a fracture, the types of bone fracture, how is diagnosed, the treatment and the prevention.
The bony collar of long bones is the one that is designed to help support the weight of the body and withstand compressive stress.
The axial skeleton consists of the skull, hyoid bone, vertebral column, sternum and ribs. The axial skeleton is a vital part of the skeletal structure e.g. bones as it protects the CNS (central nervous system); it also provides attachment of other bones and muscles in the body e.g. arms and legs
The skeletal system is made up of 206 bones, as well as tendons, ligaments, and cartilage that connects them. The skeletal system has six major functions. The first function is that it supports and provide structure, the second is it facilitates the movement, as the muscles contract and shorten they pull on the bones and move them. The Skeletal system also acts a protector to all the of the soft tissue organs, they can also move to be used as a defense of the body from outside forces. The skeletal system also helps create red bone marrow, that is a soft connective tissue surrounded by the hard walls of some bones that produce both
Twenty-eight bones make up the skull. Eight of these bones are interlocking plates. These plates form the cranium.