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BELL WORK. Write about a time you broke a bone or sprained your ankle. . BODY SYSTEMS. SKELETAL SYSTEM. OBJECTIVES. explain the functions of the skeletal system. identify four types of joints. list some problems of the skeletal system. - PowerPoint PPT Presentation
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BELL WORK
Write about a time you broke a bone or sprained your ankle.
BODY SYSTEMS
SKELETAL SYSTEM
OBJECTIVES
explain the functions of the skeletal system.
identify four types of joints.
list some problems of the skeletal system.
practice healthful behaviors to keep your skeletal system healthy.
BONE FACTS• You have 206 total bones in your body. • When you were born you had over 300 bones. As
you grew, some of these bones began to fuse together and now you have 206 bones.
• The human hand has 27 bones• The longest bone in your body? Your thigh bone, the femur -- it's about 1/4 of your height.The smallest is the stirrup bone in the ear which can measure 1/10 of an inch.
BODY’S FRAMWORK
The skeletal system helps you stand up and works with your muscles to help you walk, run, jump, bend, lift, and carry.skeletal system A body system made up of bones, joints, and connective tissue
BODY’S FRAMEWORK
The skeletal system includes many bones that support the body and protect the organs.
BODY’S FRAMEWORK
The backbone, or spinal column, consists of 24 separate bones called vertebrae.
FUNCTIONS
The skeletal system provides a strong, stable framework capable of movement
FUNCTIONS
The skeletal system supports and protects delicate internal organs.
FUNCTIONS
Bones store important minerals such as calcium and phosphorus.
FUNCTIONS
Bones produce the body’s blood cells.
Little Red Riding Cell
Her job is to carry oxygen to ALL OF THE CELLS IN THE BODY!
MARROW
Red bone marrow makes millions of blood cells each day.marrow Soft tissue in the center of some bones
JOINTS
joint The point at which two bones meet
JOINTS
Some joints do not move. Others move only slightly, and others allow a wide range of movement.
JOINTS
HING JOINTSThese joints allow movement in one direction. Knees and elbows are hinge joints.
JOINTS
GLINDING JOINGSGliding joints help bones slide over one another without twisting. Examples include wrist and ankle joints, and connective bones below the neck in the collarbone.
JOINTS
PIVOT JOINTSThese joints allow movement with limited rotation. A pivot joint is found between the neck and the head.
JOINTS
BALL AND SOCKET JOINTSThese joints allow complete rotations, making it possible for bones to move in all directions. Your hips and shoulders are examples of ball-and-socket joints.
CONNECTIVE TISSUE
cartilage A strong flexible, gel-like tissue that cushions your joints
CARTILAGE
At joints where movement occurs, the bone surfaces are coated with smooth, slippery cartilage.
CONNECTIVE TISSUE
tendons Tough bands of tissue that attach your muscles to bones
TENDON
A large tendon that you can easily feel is your Achilles tendon.
CONNECTIVE TISSUE
ligaments Cord-like tissues that connect the bones in each joint
LIGAMENTS
Ligaments help hold bones in place.
PROBLEMS WITH THE SKELETAL SYSTEM
FRACTUREA break in the bone caused by an injury
PROBLEMS WITH THE SKELETAL SYSTEM
DISLOCATIONWhen a bone is pushed out of its joint
PROBLEMS WITH THE SKELETAL SYSTEM
SPRAINStretching or twisting of ligaments in a joint
PROBLEMS WITH THE SKELETAL SYSTEM
OVERUSE INJURYAn injury that happens over time, especially in sports
PROBLEMS WITH THE SKELETAL SYSTEM
SCOLIOSISA disorder in which the spine curves to one side of the body
PROBLEMS WITH THE SKELETAL SYSTEM
OSTEOPOROSIS A condition characterized by brittle and porous bones
CARING FOR YOUR SKELETAL SYSTEM
NUTRITIONEXERCISEPOSTUREPROPER PROTECTION
