Skeletal System. Bones The skeleton has two major parts: 1.Axial skeleton are the bones of the head...
Embed Size (px)
Transcript of Skeletal System. Bones The skeleton has two major parts: 1.Axial skeleton are the bones of the head...
BonesThe skeleton has two major parts:Axial skeleton are the bones of the head and trunkAppendicular skeleton are the bones of the pelvis shoulder girdle and limbs.
BonesFunctions of the skeletonAid in movement of the bodySupport and protect internal body organsProduce red and white blood cellsStore minerals for the bodies usage.
BonesOssification-process of bone formation.Ossification begins in week 8 of an embryos development.A baby is born with 270 bones and an adult has 206 bonesA babies bones are soft and ossification continues and makes them hard and able to bear weight.
BonesDiaphysis-long bone containing a shaft.Epiphysis-end of long boneMedullary canal-center of the shaft where bone marrow isSpongy bone-breakdown of hard bonePeriosteum-fibrous tissue covering the bone
BonesBone growth starts from the center of the diaphysis and moves to the epiphyseal ends (end of the bones)
BonesOsteoblasts-bone cells involved in the formation of new bone.Osteoclasts-bone cells involved in the breakdown of old bone.
BonesWhen the epiephyseal cartilage is completely ossified growth stops. This is approximately 18 in females and 20-21 in males.Does this mean bone growth stops? Why or why not?
Bones-TypesLong Bones-arms and legsFlat Bones-skull, ribs, sternumIrregular bones-spinal cordShort bones-cubelike bones of the tarsals and carpals
BonesSimple/closed fracture- break in bone that does not pierce skin
BonesOpen/Compound Fracture- the fractured end penetrates the skin. Possible infection.
Bones-InjuriesComminuted Fracture- break in bone where it is fractured in many pieces
BonesGreenstick fracture-an incomplete fracture in the shaft of a bone occuring in children. Think of a childs bone as that of a young tree shoot, it bends and may break part way, but does not crack like an adults would.
BonesStress fracture-small incomplete break in the bone that results from overuse, weakness or biomechanical problems.
BonesEpiphyseal Plate Fracture-break in the bone at the growth plate. Typically in children 10-16, most often at wrist or ankle.
An avulsion fracture
Library Kinesiology ProjectLook at page 16 in text You are going to choose 10 of the words on the list to give the following information for.MarkingDescribe in your wordsExample PictureBe able to point it out on the skeleton in class