2The Skeleton is the name given to the collection off bones in thebody and the tissues thatconnect them.
3The skeleton has 5 major functions. It protects our vital organs such as the brain, the heart, and the lungsIt gives us structure. Without it we would just be a blob of blood and tissue on the floor.It allows us to move. Because our muscles are attached to our bones, when our muscles move, they move the bones.
4Functions It stores calcium. Which keeps bones and teeth hard. It makes Red and White blood cells
5Skeleton FactsWhen you were born, your skeleton had close to 350 bonesBy the time you become an adult, you will only have around 206 bonesThis is because, as you grow, some of the bones fuse together to form one bone such as the skull.Our bones are 5 times stronger than steel•.•
6Skeleton FactsThe smallest bones in the body are found in the ear. (3mm)The longest bone in the body is the femurOver half the body's bones are in the hands and feet.As your bones grow, you get taller. Girls usually stop growing around age 16, and boys around age 18.
7Organization of the Human Skeleton • Your skeleton is made upof two parts; the axial skeletonand the appendicularskeleton.Green = AxialPurple = Appendicular
8Colour the axial and appendicular parts of the skeleton Axial skeleton protects the organs of your body
14There are Four Main types of bone Flat: like those found in the skull; provide protection for soft tissues and points for muscle attachmentLong: found in the arms and legs; provide strength and supportShort: found in the wrists and ankles; provide flexibilityIrregular: backbone, middle ear; have shapes related to a specialized function
16Bones • Bones get their strength and rigidity from hard deposits of minerals such ascalcium andphosphate.• Bones are strongbut light becausethey are hollowand filled with asubstance calledBone Marrow.
17Bone Marrow the center of large bones. • Bone marrow is the tissue inthe center of large bones.It is a spongy, fatty tissue that houses stem cells.
18Types of Bone Marrow Red marrow Yellow marrow Has stem cells that make red blood cells, platelets and most white blood cellsYellow marrowHas stem cells that make fat, cartilage, bone and some types of white blood cellsBoth types of bone marrow contain blood vessels and capillaries.
20At birth, all bone marrow is red. With age, more and more of it is converted to the yellow type.Adults have about 2.6kg of bone marrow - about half of it is red.
21Red marrow is found:In flat bones such as hip bone, breast bone, skull, ribs, and shoulder bladesIn the spongy material at the ends of the long bones the femur and humerus.
22What happens if you loose a lot of blood? Your body can convert yellow marrow to red marrow to help replace the loss.You may need a bloodtransfusion
23Every minute of every day, someone in Canada needs blood.
24Canadian Blood Services collects blood through donations Most people have five litres of blood.When you donate you give approximately 450 ml of blood - ~ ½ a litreCanadian Blood Services collects approximately 850,000 units of blood annuallyThink about becoming a donor