The human skeleton consists of approximately 206 bones all of shapes, sizes and functions. Our skeleton system has 5 main functions. These are to protect our internal organs, support our body shape & posture, and to aid movement. In addition to these basic functions, the human skeleton also performs more complex functions such as the storing of minerals to aid bone growth (e.g. calcium,) and lastly the creation of red blood cells which are used to transport oxygen around the body and to the muscles.
The actual surfaces of the bones that might touch the other are the articulating surfaces, and the cartilage covering those surfaces is called articular cartilage. Periosteum: A dense layer of vascular connective tissue enveloping the bones except at the surfaces of the joints. Articular cartilage: The cartilage covering the articular surfaces of the bones forming a synovial joint. Also called arthrodial
1. Bone is a very active tissue. Please explain the pathway of how the bone cells get nutrients and oxygen from the blood vessels using the following terms: Periosteum, endosteum, lacunae, lamellae, canaliculi, perforating canals, osteon, Haversian canal (central canal) and trabeculae. How the bone gets the necessary nutrients and oxygen it needs is through an array of microscopic tubes and chambers. In compact bones, blood vessels pass through the bones periosteum, the membrane surrounding the bone, and the endosteum through perpendicular channels known as the perforating canals.
The movement of the bones is caused by muscles which pull on tendons that are attached to bone. Cartilage is a hard, smooth tissue that covers the end of bones. Between the cartilages of two bones which form a joint, there is a small amount of thick fluid called synovial fluid. This fluid lubricates the joint which allows smooth movement between the bones. The synovial fluid is made by the synovium.
A joint is the location at which two or more bones make contact. They are constructed to allow movement and provide mechanical support and weight bearing. 2. What is a synovial joint? Synovial joints are made up of bones that come together to formulate the joint, the ligaments attach bone to bone and allow for the joint movement to be stable and in the correct direction.
We use those minerals when we need them, they also sometimes make you fat which means that you have excessive amount of minerals. The skeleton forms a sturdy internal framework of 206 bones and associated tissues - cartilage, tendons, and ligaments. Bones provide the base to which muscles attach and also the leverage required to accomplish external movement. The skeleton protects vital organs such as the brain, spinal cord, heart and lungs. As a living, dynamic tissue, bone stores vitamins and minerals (especially calcium and phosphorus) and houses red bone marrow, which produces blood cells.
Capsular ligaments are a part of the articular capsule that surrounds synovial joints. They act up as mechanical reinforcements, creating stability when the ligaments join together. Articular cartilage- Articular cartilage is a white smooth tissue that covers the ends of bones in the joints. It enables bones of a joint to easily glide over one another, establishing easy movement. Joints between the bones, knee, elbow, and rib cage are some areas in the body where these cartilages can be found.
The human skeleton Is made up of 206 bones. The functions of the skeleton are to provide support, give our bodies shape, and provide protection to other systems and organs of the body, to provide attachments for muscles, to produce movement Joints A joint is the point where two or more bones meet. There are three main types of joints; Fibrous (immoveable), Cartilagenous (partially moveable) and the Synovial (freely moveable) joint. Fibrous joints Fibrous (synarthrodial): This type of joint is held together by only a ligament. Examples are where the teeth are held to their bony sockets and at both the radioulnar and tibiofibular joints.
By working together with muscles, the strong, lightweight bones enable movement as well. Also, they protect internal organs – the skull protects the brain; the ribs protect the lungs and heart. In addition, bones produce blood cells and other substances that the body needs. Finally, they store materials like calcium and phosphorus. These make the bones strong, and when the body needs them, the bones release small amounts into the blood.