The Skeletal System By Christie Rozema Ed 205 Sect. 2 Quit
Head Arms Legs Hands Feet Chest Introduction Welcome to the skeletal system! Come along with me as we learn a little bit about human bones, and the names given to them. Click on introduction to learn about bone structure, then click on each part of the body to learn the names of bones in that given area. Need to see if you have learned all the names? Try quizzing yourself! Bone Quiz Authors page Resources Concept Map Quit
Introduction <ul><li>Bones provide support, protection to vital organs and allow for movement in the human body. All the bones of the body together is called the skeletal system. The skeletal system is what gives the human body its distinctive shape! Did you know that an adult has 206 bones? An infant has even more. They have more than 300 bones! As babies grow some bones join, or fuse, together to make a bigger stronger bone. Osteology is the study of bones. </li></ul><ul><li>For more information on the organization of the skeletal system watch this video http:// www.youtube.com/watch?v =Nr2318z1XKg&feature=related </li></ul>Quit
Introduction cont. <ul><li>Because bones make up such a large portion of the human body they are made to be lightweight, but very hard and strong. There are three different parts that make up each individual bone: periosteum , compact bone and spongy bone . The periosteum in the thin outer layer of the bone. The difference between spongy and compact bone is the amount of gaps and spaces in them. Compact bone has very few gaps and is made in a honeycomb like fashion, making it a harder, denser, stronger material. This is what the outside of a bone is made of with the periosteum surrounding it on the outside. The inside of the bone is softer having more gaps throughout it. This is where bone marrow is found. Bone marrow creates red and white blood cells that get sent throughout the body in the circulatory system (which is to be talked about at a different time). Although bones are very strong, they do occasionally break, and need some time to heal. Come with me as we look at each section of the human body, and we will give names to some of the bones found in each area. </li></ul>Quit
Head (skull) <ul><li>The skull consists of 28 bones (22 not counting the 6 ear bones). All of the bones are joined by sutures causing them to be rigid allowing for very little movement, except for the mandible. At birth humans have 45 bones in the skull and many fuse together. We will only be learning 4 of these bones for starters. </li></ul>Maxilla Mandible Frontal lobe Nasal bone Quit
Chest <ul><li>The chest area consist of the shoulder girdle and the spine and ribs. The spine is made of 26 vertebrae. There are 24 ribs. Did you know that the clavicle is the most frequently fractured bone in the human body? </li></ul>Rear view Clavicle Scapula Vertebrae Sternum Ribs Quit
Arm Humerus Radius Ulna Quit Your humerus bone connects to the scapula of the shoulder girdle and is above your elbow. The ulna and radius are below you elbow. A way that I remember which bone is which is that the ulna is the shorter word, and it connects to the short pinkie. Radius is a longer word which connects to the longer thumb. The elbow is the end of the ulna and radius
Hand Carpals Metacarpals Phalanges Ulna Radius Quit The hand consists of 27 bones. 8 wrist bones called carpals, 5 hand bones called metacarpals, and 14 finger bones called phalanges.
Leg Pelvis Femur Patella Tibia Fibula Quit The lower portion of the body consists of the pelvis and leg and feet bones. The femur is the biggest bone in the human body. The patella is the kneecap. To remember which bone is the tibia and fibula I say that the fibula fibs, or fools, you into thinking it’s the bigger bone by having the longer name, but it is not it is the smaller if the two.
Feet Metatarsals Tarsal Calcaneus Phalanges Quit Your feet take a great amount of pressure from supporting up your entire body. There are 26 bones in each foot. Just like in the hands the feet have 6, not 8 like the hand, ankle bones called the tarsal, 5 foot bones called metatarsals, and 14 toe bones once again called phalanges. The calcaneus is your heel bone.
Bone Quiz <ul><li>Welcome to the bone quiz! </li></ul><ul><li>Take a piece of paper and number it 1-24. </li></ul><ul><li>Each bone of the body now has a number instead of the name. Write down the name you think the bone is called next to the number given. After you write down all you know feel free to check your answers by clicking on the answer sheet link on the last slide of the quiz. Good Luck! </li></ul><ul><li>Go to the last slide of the quiz or back to this page to return to the main page of the presentation. </li></ul>Quit Skip to resources
Author’s Page <ul><li>I’m Christie Rozema a junior at Grand </li></ul><ul><li>Valley State University. I am going to school to be an elementary science teacher. I love to read, go to the beach, watch the sun set, gaze into the starry night sky, and most importantly spend time with my family. </li></ul><ul><li>If you would like to contact me with any questions or comments feel free to at: mailto:firstname.lastname@example.org </li></ul>Quit