Understandings: Why do we have a skeletal system? What makes up our skeletal system? Do Now: Pick up the skeleton worksheet and match up the name of the bone with the bone. Do your best

Objective:  Label the parts of the skeletal system  Explain how the skeletal system functions  Identify problems with the skeletal system  Recall how to care for your skeletal system

Skeletal System  Body System: a group of organs that work together to perform an important function  Skeletal System: a frame work of bones that supports you, allows you to move, protects vital organs and produces blood cells  Functions:  Supports you  Allows you to move  Protects vital organs  Produces blood cells

The Skeletal System  Made up of 206 bones.  The bones of the face, skull, vertebral column and rib cage make up your body’s central framework for support. (Protects vital organs!)

Important “Bone” Terms  Cartilage: a strong flexible tissue on the ends of some bones  It provides a cushion where bones come together.  Ligaments: strong cords of tissue that connect bones to bones in your joints.

Support and Movement  Which bones provide support and movement?  Bones of the:  Arms  Legs  Pelvis  They work with muscles to help us move!

Anatomy of a Bone The Inside of a Long BoneParts of a Long Bone  Periosteum – covering on bones  Compact Bone – hard bone  Spongy Bone – soft bone  Bone Marrow – blood cells made here  Parts of the Bone Parts of the Bone

Movie: The Skeletal System

How do our bones move?  Joint: a point at which two bones meet.  Without joints, you could not move.  Three main kinds of joints:  Hinge Joint  Ball and Socket Joint  Fixed Joint Muscle and Bones Make Joints Move

Joints Types of JointsMovementsLocations Hinge Joint Provides back and forth movement. Elbow, Knees Fixed JointNo movement is allowed.Plates of the skull Ball-and-Socket Joint Allows a wide range of movements. Shoulder, Hip

The Skeletal System Skull Clavicle Scapula Humerus Sternum Rib Cage Vertebrae Ulna Radius Femur Patella Fibula Tibia

The X-Ray GIFs of Cameron Drake  Moving X-rays Moving X-rays

Brain Pop Videos  Joints Joints  Broken Bones Broken Bones

Problems and Caring for the Skeletal System

Skeletal System Problems OsteoporosisOsteoporosis Fact!  A disease in which bones become thin and brittle.  Who does this affect?  55% of people who are over the age of 55.  Of the 10 million Americans who have this disease, 8 million are women and 2 million are men.  (from osis/diseasefacts.htm)  About 85-90% of adult bone mass is acquired by age 18 in girls and 20 in boys. Building strong bones during childhood and adolescence can help to prevent osteoporosis later in life.  (from orosis/diseasefacts.htm)

Skeletal System Problems Scoliosis Photograph of someone with scoliosis.  Causes: deformity of the spine win which the spine develops an S-shaped curve when viewed from behind.  Can this affect you? Affects 2% of women and.5% of men in the general population

Skeletal System Problems Sprain What happens when you sprain your ankle?  Stretching or partial tearing of ligaments.  Can be painful and cause swelling around the injured joint.  /flash/body/yuckystuff/ankl esprain/js.index.html /flash/body/yuckystuff/ankl esprain/js.index.html

Caring for your Skeletal System  Exercise regularly using weights, walking, running, jumping rope, dancing, hiking, soccer, or basketball (just to name a few activities!).  Wear proper fitting shoes.  Select foods and beverages rich in calcium, phosphorus, and vitamin D.  Sit, stand, and walk with correct posture.  Participate in screenings for scoliosis.

Skeleton Game  Labeling the Skeleton Labeling the Skeleton