Which of the following is an example of the skeletal system's primary function of providing structural support? a)Red marrow fills the internal cavities of many bones. b)Individual bones provide a framework for the attachment of soft tissues and organs. c)The skull encloses the brain. d)Bones change the magnitude and direction of the forces generated by skeletal muscles. e)Calcium salts are found in bone.
Bone-forming cells, that also are responsible for the production of new matrix, are called ________. a)osteoclasts b)osteocytes c)osteoblasts d)calcium e)osteons
mature bone cells that maintain normal bone structure by recycling the calcium salts in the bony matrix around themselves a)osteoclasts b)osteocytes c)osteoblasts d)calcium e)osteons
The organic component of the matrix, which makes up around one- third of the mass of bone, is dominated by a)dendritic fibers. b)collagen fibers. c)calcium fibers d) giant fibers.
Which of the following accounts for almost two-thirds of the mass of bone tissue? a)protein fibers b)cells c)calcium phosphate d)polysaccharides e) osteons
An increase in the diameter (width) of growing bone is termed ________ growth a)intramembranous b)epiphyseal c)ossification d)endochondral e)appositional
Rickets is a condition marked by a softening and bending of bones that occurs in growing children, as a result of ________ deficiency a)vitamin D3 b)growth hormone c)thyroid hormone d)vitamin A e)vitamin C
The presence of a definitive epiphyseal line indicates a)epiphyseal growth is just beginning. b)growth in bone diameter is just beginning. c)the bone is fractured at that location. d)epiphyseal growth has ended. e) none of the above
In general, the process of ________ replaces existing cartilage with bone a)ossification b)blood cell production c)resabsorption d)calcification e) osteolysis f)
ID K a)Articular CartIlage b)Blood vessels c)Marrow cavity d)Epiphyseal line e)Diaphysis f)Proximal Epiphysis g)Distal Epiphysis h)Compact bone i)Spongy bone j)Periosteum k)Endosteum
results in bone projecting through the skin. 1.Compound fracture 2.Compound reduction 3.Closed reduction 4.Open reduction
Which of the following is part of the appendicular skeleton? a)the vertebrae b)the sternum c)the scapula d)the manubrium e)the skull