bell work write about a time you broke a bone or sprained your ankle

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