Joints are where two or more bones meet. They allow the rigid skeleton to move, surrounding soft tissues hold each joint together. Muscles lie over one or more joints at the lower back and extend upwards to the trunk and downwards to the pelvis. At both ends the muscle changes into a tendon by which it attaches itself to different
A tendon is tissue that connects muscles to bones. It is the muscles job to move the skeletal structure of the body. When a muscle contracts it creates a pulling motion. It is the connection of the tendon that acts as an elastic band, this allowes a contraction to move the bones. What is a ligament made of?
This plate is a layer of hyaline cartilage that allows the diaphysis of the bone to grow in length but not in width. • Articular cartilage is a thin layer of hyaline cartlage covering the epiphysis where the bone forms a joint with another bone. This
U. tendons What is its function? The tendon connects the muscle to the bone. What is a body tissue? Body tissue is groups of similar cells that perform a common function,
Lever; almost always the bone Fulcrum; the pivot point of the lever in which is usually the joint. Muscle force; the force that drives the opposite ends of the muscles together. Resistive force; the force generated by a factor to the external body Torque; the degree in which a force tends to rotate an object. http://www.answers.com/topic/first-class-lever http://www.answers.com/topic/first-class-lever There are three different types of levers in the body; First-class, Second-class and Third-class. First-class; when the muscle force and resistive force is on different sides of the fulcrum e.g.
When the muscles contract the bones move 5. Blood production - red blood cells (to carry oxygen) and white blood cells (to protect against infection) are produced in the bone marrow of some bones. The Structure and Physiology of Bone Bone is
The articular capsule has two layers: -Fibrous capsule: the outer layer - Synovial membrane: the inner layer that secretes synovial fluid which lubricates to reduce friction. The surface of the knee joint, the patella lies within the joint capsule and has an important function which is to reduce friction during extension and to protect the knee joint. The muscles that facilitate the movement of the synovial joints are skeletal muscles. The muscles that move the knee joint are called quadriceps and hamstring. When the agonist which is the contracting muscle which, in this case is the quadriceps, it allows flexion of the knee joint while the antagonist which will be the hamstring, is the relaxed
[2] The skeletal portion of the system serves as the main storage system forcalcium and phosphorus and contains critical components of the hematopoietic system. [3] This system describes how bones are connected to other bones and muscle fibers via connective tissue such as tendons and ligaments. The bones provide the stability to a body in analogy to iron rods in concrete construction. Muscles keep bones in place and also play a role in movement of the bones. To allow motion, different bones are connected by joints.
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.
It has been shown that in order to recover faster from an ankle sprain, rigid immobilization of the affected foot must be observed. Doctors can apply a post-mold cast to immobilize the area below and above your injured ankle. To facilitate your mobility, you might also need to use the best crutches for exercise injuries to help you move around. 3. ACL or PCL injuries.