Transcript of "Life Science 1.2 : The Skeletal System"
Life Science : 1.2<br />The Skeletal System<br />
Objectives:<br />Identify the major organs of the skeletal system.<br />Describe four functions of bones.<br />Describe three types of joints.<br />List three injuries and two diseases that affect bones and joints.<br />
Bones<br />Bones, cartilage, and the connective tissue that holds bones together make up your skeletal system.<br />Bone Structure <br />Bone tissue without any visible open spaces is called compact bone. <br />Bone tissue that has many open spaces is called spongy bone. <br />Bones contain a soft tissue called marrow.<br />Bone Growth<br />Most bones start out as a flexible tissue calledcartilage. <br />Eventually, most cartilage is replaced by bone.<br />
Joints<br />Joint<br />Place where two or more bones meet.<br />Joints are held together byligaments.<br />Three Joints:<br />
Skeletal System Injuries and Diseases<br />Bones may be fractured or broken.<br />Ligaments can be stretched or torn.<br />Arthritis is a disease that causes the joints to swell or stiffen.<br />Osteoporosis is a disease that causes bones to become less dense.<br />
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