{ The Skeletal System

Your skeletal system has many functions…  Provides support for the body  Protects internal tissues and organs from damage  Acts as the framework for attached muscles  Allows movement of limbs and digits  Produces new red and white blood cells  Stores fat and minerals (calcium and phosphorus) There are 206 bones in the human body.

 one.html one.html one.html  Key terms from the clip: Bone Marrow, Compact Bone, Spongy Bone  Ossification: the process by which bone is formed, renewed, and repaired. Bone Structure

 Bones are categorized by their shape.  Shapes include long bones, short bones, flat bones, and irregular bones. Examples: Humerus and Femur - Long Bones Rib, Skull, Sternum – Flat Bones Wrist, Carpals (hands), Tarsals (feet)– Short Bones Vertebrae and Hip – Irregular Bones Types of Bones

 Cartilage: a strong, flexible connective tissue that can act as a cushion between bones to reduce friction or as a flexible structure for soft parts of the body.  Ligament: a band of fibrous, slightly elastic connective tissues that attaches one bone to another. Ligaments attach to bones to make joints.  Tendon: a fibrous cord that attaches muscle to the bone. Also holds joints together. Connective Tissue

 Joints: Are points at which bones meet. Different Types of Joints: Flexible joints include ball and socket, hinge, pivot, and ellipsoidal joints Examples: Hinge joint – Elbow and Knee Ball and Socket – Hip Pivot – Rotation of the skull Ellipsoidal - Wrist Joints

 odybasics_knee.html odybasics_knee.html odybasics_knee.html Connective Tissue and Joints

The Skeleton cranium clavicle scalpula ribs sternum vertebrae pelvis humerus radius ulna carpals metacarpals phalanges femur patella fibula tibia tarsals metatarsals

 Largest Bone:  Femur  Smallest Bone:  the stapes (ear bone) a.k.a. “stirrup” Interesting Facts…