NU 327 Exam 6 WITH WELL ANSWERED QUESTIONS

NU 327 Exam 6 WITH WELL
|\ |\ |\ |\ |\ |\




ANSWERED QUESTIONS |\




Functions of the skeletal system - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\


✔✔Protection of internal organs |\ |\ |\




Provide bony attachments for muscles and ligaments
|\ |\ |\ |\ |\ |\




Present rigid levers to allow functional movement of the body
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\


and its separate parts
|\ |\ |\




Store mineral and marrow elements for forming new blood cells
|\ |\ |\ |\ |\ |\ |\ |\ |\




organic matrix of bone - CORRECT ANSWERS ✔✔Collagen fibers
|\ |\ |\ |\ |\ |\ |\ |\ |\


(strength and flexibility) |\ |\




Ground substance (surrounds bone cells) Osteoblasts
|\ |\ |\ |\ |\




Osteocytes


Osteoblasts


Inorganic mineral content - CORRECT ANSWERS ✔✔Mineral salts
|\ |\ |\ |\ |\ |\ |\ |\


(calcium and phosphate)|\ |\

,Hard, rigid structure
|\ |\




Reservoir for calcium and phosphorus
|\ |\ |\ |\




Osteon (Haversion system) - CORRECT ANSWERS ✔✔Basic unit of
|\ |\ |\ |\ |\ |\ |\ |\


bone
|\




Haversion canals allow nutrients from blood vessels to reach the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\


osteocytes


Osteoblasts - CORRECT ANSWERS ✔✔Lay down bone
|\ |\ |\ |\ |\ |\




Responsible for bone growth and repair |\ |\ |\ |\ |\




Estrogen secretion helps regulate
|\ |\ |\




Osteoclasts - CORRECT ANSWERS ✔✔Bone resorption
|\ |\ |\ |\ |\




Tearing down the old or excess bone
|\ |\ |\ |\ |\ |\




Cancellous bone (trabecular) - CORRECT ANSWERS ✔✔Spongy
|\ |\ |\ |\ |\ |\ |\




Thin plates
|\

,Laid down in response to stress
|\ |\ |\ |\ |\




Accomodates loads |\




Compact bone (cortical) - CORRECT ANSWERS ✔✔Resistant to
|\ |\ |\ |\ |\ |\ |\ |\


compression


Dense in structure
|\ |\




Periosteum - CORRECT ANSWERS ✔✔Vascular |\ |\ |\ |\




Inner layer contains
|\ |\ |\




osteoblasts


Covers the entire bone except for the ends
|\ |\ |\ |\ |\ |\ |\




long bone - CORRECT ANSWERS ✔✔
|\ |\ |\ |\ |\




Wolff's law - CORRECT ANSWERS ✔✔Bone is laid down where it is
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


needed and resorbed where it is not needed
|\ |\ |\ |\ |\ |\ |\ |\




Why is this important?
|\ |\ |\ |\




Immobilized bone or persons on bedrest are not subject to stress
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\




Bone-resorbing activity |\ |\

, increases (osteoclasts)|\




Increased risk for fractures
|\ |\ |\




Increased risk for falls |\ |\ |\




Geriatric Considerations - CORRECT ANSWERS ✔✔Increased bone
|\ |\ |\ |\ |\ |\


resorption and decreased bone formation
|\ |\ |\ |\ |\




-Osteoporosis


Increased bone circumference
|\ |\




-Pelvis widening
|\




Dehydration of intravertebral disks |\ |\ |\




-Kyphosis
-Decreased height |\




Erosion and thinning of cartilage
|\ |\ |\ |\




-Synovial membrane fibrosis
|\ |\




Cartilage - CORRECT ANSWERS ✔✔Dense connective tissue
|\ |\ |\ |\ |\ |\




Supports, shapes, and cushions body structures
|\ |\ |\ |\ |\