BELL WORK Write about a time you broke a bone or sprained your ankle.
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Transcript of BELL WORK Write about a time you broke a bone or sprained your ankle.
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BELL WORK
Write about a time you broke a bone or sprained your ankle.
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BODY SYSTEMS
SKELETAL SYSTEM
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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.
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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.
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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
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BODY’S FRAMEWORK
The skeletal system includes many bones that support the body and protect the organs.
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BODY’S FRAMEWORK
The backbone, or spinal column, consists of 24 separate bones called vertebrae.
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FUNCTIONS
The skeletal system provides a strong, stable framework capable of movement
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FUNCTIONS
The skeletal system supports and protects delicate internal organs.
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FUNCTIONS
Bones store important minerals such as calcium and phosphorus.
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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!
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MARROW
Red bone marrow makes millions of blood cells each day.marrow Soft tissue in the center of some bones
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JOINTS
joint The point at which two bones meet
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JOINTS
Some joints do not move. Others move only slightly, and others allow a wide range of movement.
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JOINTS
HING JOINTSThese joints allow movement in one direction. Knees and elbows are hinge joints.
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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.
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JOINTS
PIVOT JOINTSThese joints allow movement with limited rotation. A pivot joint is found between the neck and the head.
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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.
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CONNECTIVE TISSUE
cartilage A strong flexible, gel-like tissue that cushions your joints
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CARTILAGE
At joints where movement occurs, the bone surfaces are coated with smooth, slippery cartilage.
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CONNECTIVE TISSUE
tendons Tough bands of tissue that attach your muscles to bones
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TENDON
A large tendon that you can easily feel is your Achilles tendon.
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CONNECTIVE TISSUE
ligaments Cord-like tissues that connect the bones in each joint
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LIGAMENTS
Ligaments help hold bones in place.
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PROBLEMS WITH THE SKELETAL SYSTEM
FRACTUREA break in the bone caused by an injury
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PROBLEMS WITH THE SKELETAL SYSTEM
DISLOCATIONWhen a bone is pushed out of its joint
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PROBLEMS WITH THE SKELETAL SYSTEM
SPRAINStretching or twisting of ligaments in a joint
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PROBLEMS WITH THE SKELETAL SYSTEM
OVERUSE INJURYAn injury that happens over time, especially in sports
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PROBLEMS WITH THE SKELETAL SYSTEM
SCOLIOSISA disorder in which the spine curves to one side of the body
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PROBLEMS WITH THE SKELETAL SYSTEM
OSTEOPOROSIS A condition characterized by brittle and porous bones
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CARING FOR YOUR SKELETAL SYSTEM
NUTRITIONEXERCISEPOSTUREPROPER PROTECTION