Homeroom READ!!!!!! Or study for your cell quiz. Sit in your assigned seat. All pencils must be sharpened before the bell rings.

Warm-up: Describe how your life would be without bones. The Skeletal System Warm-up: Describe how your life would be without bones.

What is a Bone? The skeletal system is made up of the bones and cartilage that forms the framework of your body. We have bones so that we are not a puddle of skin and guts on the floor. Babies have 300 bones. Adults have 206 bones. Quit Main Menu

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The Inside of a Bone A bone is made up of salts, water, and tissue. Inside a bone there is a jelly substance called bone marrow. Bone marrow produces blood cells for the body. Quit

Four Main jobs of a Bone: To protect your body and give it shape. To protect your internal organs. To provide a scaffolding for your muscles, allowing you to move. To store minerals and make blood cells. Quit Main Menu

The Spine The spine is the central support for the body. The spine is made up of separate bones called vertebrae. Between each vertebrae is cartilage which keeps bones from rubbing against each other. FUN FACT: there are 26 vertebrae in the human body. Quit Main Menu

Ribs “Your rib cage is made up of 12 vertebrae, 24 ribs and a breastbone in three parts. It protects your heart and lungs from knocks and bumps.” Quit Main Menu

Hands and Feet The bones in your hands and feet are VERY flexible. The foot has 26 bones. (tarsals, metatarsels, and phalanges) The hand has 27 bones. (metacarpals, carpals, and phalanges) Quit Main Menu

Hips and Legs The hip bone helps us to stand upright and move. The main bones of the legs are the tibia, fibia, and femur. The patella (kneecap) is also important! Quit Main Menu

Arms The bones in the arm are very flexible. The three bones that make up the arm are the ulna, radius, and humerus. The two bones that form the shoulder are the clavicle and the scapula. Quit Main Menu

Joints The Pivot Joint Hinge Joint The Gliding Joint Ball-and-socket Joint View More on Joints! Quit Main Menu

Quiz How many bones are in an adult? 4. What is another name for kneecap? 342 bones A. Sternum 100 bones B. Phalanges 85 bones C. Tibia 206 bones D. Patella 2. What is the jelly substance inside a bone called? 5. The legs are connected to what ? Cartilage A. The Hips (Pelvis) Bone Marrow B. Skull Compact Bone C. Hands Joints D. Heart 3.What Bone protects the internal organs BONUS QUESTION!!! like the lungs and heart? What joint is found in the ankle? The Spine A. Pivot Joint The Femur B. Gliding Joint The Ribs C. Hinge Joint Pelvis D. Ball-and-socket Joint Quit Main Menu

Pasta Skeleton Using the pasta in the box, create a human skeleton with your partner. You must include 15 bones!