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Skeletal System

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.

made of organs called _____   bones  
number of adult bones   206  
number of Infant bones   350  
number of bones total   206  
Axial skeleton (main_____)consists of:(4)   Main trunkconsists of:SkullVertebrebral columnribs and sternumhyoid bone  
Appendicular skeleton (extremities/______)Cosists of: (2)   (pelvic and shoulder girdles)consists of:1. upper extremities2. lower extremities  
number of Auditory ossicles   6  
Functions of Skeletal system(5)   1.framework-for muscles,fat,and skin2.protection-internal structures3.production-blood cells=henatopoiesis or homopoiesis; RBCs, WBCs, platelets4.storage-calcium, phosphorus and fat5.levers-muscle attatchs to hones to assist in movement  
bones of extremities=_____   long bones  
diaphysis   long shaft  
epiphysis   ends of bone  
red marrow (found in) (produces)   found in epiphysisproduces RBCs, plt, and some WBCsuse for dx procedures  
Medullarty canal/cavity (inside the _____) (filled with ____)   inside the diaphysisfilled with yellow marrow  
endosteumlines ______ canalkeeps ______ marrow intactProduces some _____   line the medullary canalkeeps the yellow marrow intactproduces some bone growth  
Red Marrowfound in certian bones (5)function:   found in vertebrae, ribs, sturnum, cranium, proximal ends of humerous and femurfunction: produces RBCs, Thrombocytes, WBCsimportant in manufacture of blood cells and immune system  
Periosteumoutside of ____; tough____necessary for______ and ______contains: ______   outside or bone; tough membranenecessary for bone growth and repair, nutritioncontains blood vessels  
osteoblasts-cells that _____osteoclasts_cells that _____   osteoblasts-cells that form new bone tissueosteoclasts-cells that break down bown  
articular cartilage-______"_____ absorber"   Articular cartilage-thin layer that covers the epiphysis"Shock absorber"  
Skull composed of (2) bones   cranial bonesfacial bones  
Cranium-Sheprical ________number of bones:   Cranium-sheprical structure that surrounds and protects the brain;8 bones;1 frontal;2 parietal;2 temporal;1 occipital (back of the head)1 ethmoid (separates nasal cavity from the brain)1 sphenoid  
number of facial bones   14 total; 1 mandible (lower jaw), 2 maxilla (upper jaw), 2 zygomatic (cheek), 2 lacrimal (inner aspect of eyes), 5 nasal (upper part of nose), 2 palatine (roof of mouth)  
sutures   areas where the cranial bones have joined together  
sinuses   air spaces in the bones of the skull act as resonating chambers for the voice  
foramina   openings in bones that allow nerves and blood vessels to enter or leave the bone  
fontnels   "soft spots"  
spinal column #__ bones   26  
functios of vertebrae (2)   protect spinal cord, provide support for head and trunk  


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Created by: sarah_thomas