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.
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Write about a time you broke a bone or sprained your ankle.
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.
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
The skeletal system includes many bones that support the body and protect the organs.
The backbone, or spinal column, consists of 24 separate bones called vertebrae.
The skeletal system provides a strong, stable framework capable of movement
The skeletal system supports and protects delicate internal organs.
Bones store important minerals such as calcium and phosphorus.
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!
Red bone marrow makes millions of blood cells each day.
marrow Soft tissue in the center of some bones
joint The point at which two bones meet
Some joints do not move. Others move only slightly, and others allow a wide range of movement.
These joints allow movement in one direction. Knees and elbows are hinge joints.
Gliding joints help bones slide over one another without twisting. Examples include wrist and ankle joints, and connective bones below the neck in the collarbone.
These joints allow movement with limited rotation. A pivot joint is found between the neck and the head.
BALL AND SOCKET JOINTS
These 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.
cartilage A strong flexible, gel-like tissue that cushions your joints
At joints where movement occurs, the bone surfaces are coated with smooth, slippery cartilage.
tendons Tough bands of tissue that attach your muscles to bones
A large tendon that you can easily feel is your Achilles tendon.
ligaments Cord-like tissues that connect the bones in each joint
Ligaments help hold bones in place.
A break in the bone caused by an injury
When a bone is pushed out of its joint
Stretching or twisting of ligaments in a joint
An injury that happens over time, especially in sports
A disorder in which the spine curves to one side of the body
A condition characterized by brittle and porous bones