2. the portion of a long bone formed from a primary center of ossification. EPIPHYSIS- 1. The end of a long bone that is originally separated from the main bone by a layer of cartilage but that later becomes united to the main bone through ossification. HYALINE CARTILAGE- a type of connective tissue composed of specialized cells in a translucent, pearly blue matrix. Hyaline cartilage thinly covers the articulating ends of bones, connects the ribs to the sternum, and supports the nose, the trachea, and part of the larynx.
Skeletal System * Function of the Skeletal System * Support - framework that supports body and cradles its soft organs * Protection - for delicate organs, heart, lungs, brain * Movement - bones act as levers for muscles * Mineral storage - calcium & phosphate * Blood cell formation – hematopoiesis * Types of Bones * Long Bones - metacarpals, metatarsals, phalanges, humerus, ulna, radius, tibia, fibula * Short Bones - carpals, tarsals * Flat Bones - rib, scapula, skull, sternum * Irregular Bones - vertebrae, some facial bones * Sesamoid – patella * Skeletal Organization 1. Axial Skeleton * skull, ribs, vertebral column 2. Appendicular skeleton - arms, legs, and bones that anchor the limbs to the axial skeleton. * Axial Skeleton 1. Cranium Facial Bones Anterior View Anterior View 2.
In synovial joints a fluid containing joint cavity separates the bones. The opposing bone surfaces in the joint cavities are covered with a layer of cartilage. Outside the joint cavities ligaments connect the bones. In addition to being held together by ligaments, synovial joints are also stabilized by the muscles around the joints. | How Do They MoveWith a lot of help.
The axial skeleton includes the skull, spinal column, ribs and sternum. The appendicular skeleton includes all upper and lower extremities, the shoulder girdle and the pelvic girdle. Bones come in four main shapes, long, short, flat and irregular and are composed of webs of collagen fibers reinforced with calcium and phosphorous. The collagen provides flexibility while the minerals provide tensile strength. The axial skeletal makes up the upper structure of the skeletal system.
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.
Without these an upright posture would not be able to be maintained. Protection. One of the main functions of the skeleton is protect the major internal organs within the body. The skull (cranium) acts as a protective casing for the brain and the sensory organs, the rib cage provides protection to the lungs and heart and the spinal column protects the nerves. Blood cell production.