1 - Skeletal System.pptx

The Skeletal System Understanding the Framework of the Human Body What if humans had no bones? What would happen if you did not have a skeleton as shown? Name at least three things you can and cannot do if you have no bones. Naming the Human Bones Did you know that bones also serve as storehouses...

The Skeletal System Understanding the Framework of the Human Body What if humans had no bones? What would happen if you did not have a skeleton as shown? Name at least three things you can and cannot do if you have no bones. Naming the Human Bones Did you know that bones also serve as storehouses for two minerals: calcium and phosphorus? These minerals are essential for nerves and cells to function properly. Naming the Human Bones Did you know that bones also serve as storehouses for two minerals: calcium and phosphorus? These minerals are essential for nerves and cells to function properly. WHAT IS SKELETAL SYSTEM? The skeletal system gives your body its shape and holds your organs in place. In the simplest terms, your skeletal system is your body’s most important support structure. Your skeletal system also includes connective tissue that helps you stay supported and safe while you’re moving and still. It includes muscles that help you move and creates new blood cells that keep you healthy. The skeletal system is also called the musculoskeletal system. FUNCTIONS OF THE SKELETAL SYSTEM  Giving your body shape: Your skeleton supports the weight of your body. It’s also the anchor for all the tissue that connects to it. Helping you move: Your joints, connective tissue and muscles all work together to push and pull parts of your body every time you move. Protecting your organs: The human skeleton is like a built-in suit of armor for organs throughout your body. Your skull protects your brain, your ribs shield your heart and lungs, and the vertebrae in your spine keep your spinal cord safe.  Creating new blood cells: Bone marrow at the center of some of your bones produces new red blood cells and white blood cells your body needs to stay healthy. Storing minerals: Your bones hold your body’s supply of important minerals like calcium and vitamin D. MAIN PARTS OF THE SKELETAL SYSTEM  Bones: Bones are your body’s main form of structural support. Adults have between 206 and 213 bones in their bodies. Muscles: Muscles are made of tightly woven, stretchy fibers. You have more than 600 muscles in your body that help you do everything from walking, running and jumping to breathing and digesting food.  Cartilage: Cartilage is strong, flexible tissue that acts like a shock absorber in joints throughout your body. Ligaments: Ligaments are bands of tissue that connect bones to other bones.  Tendons: Tendons are cords that connect muscles to bone. Joints: A joint is any place two bones meet. It contains some of (or all) the pieces listed above. FUNCTION OF THE BONES  SKULL To protect the brain and allow attachments for the facial muscles. CERVICAL VERTEBRAE Supports the weight of your head.  MANUBRIUM STERNI Allows protraction and retraction of thorax. XIPHOID PROCESS Serve as a point for muscular attachment.  LUMBAR VERTEBRAE Provide stability for your back and spinal column and allow for a point of attachment for many muscle and ligaments.  ILIUM Relieve a variety of ailment, including age-related diseases, burn, ulcers and coughs.  SACRUM Forms the posterior pelvic walls and strengthens and stabilizes the pelvis.  COCCYX Support your weight and helps you keep your balance when sitting.  PUBIS Protect the intestines, bladder and internal sex organs.  FEMUR Use to stand/critical part of your ability to stand.  PATELLA Helps quadriceps muscle move your leg, protect your knee joint and support muscles.  TARSAL/TARSUS Carrying and transferring weight in bipedal locomotion. METARSUS/METATARSALS Use for force absorption, support and as a rigid lever during gait propulsion.  PHALANGES Allow to use grip and hold onto objects.  ORBITAL CAVITY Protect the globe, while the supportive tissues allow the globe to move.  NASAL Filter and warm the air, and make it moist before it goes into the lungs.  CLAVICLE Serve as connection between the axial and appendicular skeleton in conjunction with the scapula.  SHOULDER BLADE/SCAPULA Protects the posterior upper chest including the underlying nerves and blood vessels.  RIB Function is to aid respiration.  HUMERUS Help your arm move, flex and rotate, hold 13 muscle in place.  ULNA Help you move your arm wrist and hand.  RADIUS Permits the forearm and hand to pronate and supinate, flex and extend at the elbow, and adduct, abduct, extend flex and circumduction of the wrist.  CARPALS Enables the wrist to rotate and move up and down.  METACARPALS Accommodate the muscles, tendons, and nerves of the palm.  PHALANGES Allow to use grip and hold onto objects.  FIBULA To combine with the tibia and provide stability to the ankle joint.  TIBIA Main function in the leg is to bear weight.