UNC BIOL 252 Exam 2 UPDATED ACTUAL
Exam Questions and CORRECT Answers
chondrocytes - CORRECT ANSWER - cartilage cell
tension - CORRECT ANSWER - force needed to stretch or change something
compression - CORRECT ANSWER - to press or squeeze together
torsion - CORRECT ANSWER - the twisting of a bodily organ
diaphysis - CORRECT ANSWER - The shaft of a long bone
epiphysis - CORRECT ANSWER - The head of a long bone
epiphyseal line/plane - CORRECT ANSWER - line that marks where the bone grew from
the epiphyseal plate- found in adults
marrow cavity - CORRECT ANSWER - cavity of bone containing red and or yellow bone
marrow
periosteum - CORRECT ANSWER - A layer of fibrous connective tissue covering the
surface of a bone
endosteum - CORRECT ANSWER - thin layer of cells lining the medullary cavity of a
bone
osteon - CORRECT ANSWER - A structural unit of compact bone consisting of a central
canal surrounded by concentric cylindrical layers of matrix
, osteoblast - CORRECT ANSWER - Bone- forming cell that arises from an osteogenic cell,
deposits bone matrix, and eventually becomes an osteocyte
osteocyte - CORRECT ANSWER - Mature bone cell formed when an osteoblast becomes
surrounded by its own matrix and entrapped in a lacuna
articular cartilage - CORRECT ANSWER - A thin layer of hyaline cartilage covering the
articular surface of a bone a a synovial joint, serving to reduce friction and ease joint movement
endochondral ossification - CORRECT ANSWER - The formation of bone in which a
cartilage template is gradually replaced by a bone matrix, as in the formation of long bones
calcification - CORRECT ANSWER - deposit of calcium in a tissue
PTH - CORRECT ANSWER - parathyroid hormone- a hormone secreted by the
parathyroid glands that raises blood calcium concentration by stimulating bone resorption by
osteoclasts, promoting intestinal absorption of calcium and inhibiting urinary secretion of
calcium
calcitonin - CORRECT ANSWER - which lowers calcium and phosphate concentration in
plasma and inhibits bone resorption
calcium - CORRECT ANSWER - chemical element, formation of bones, found in blood,
essential for normal function
osteoporosis - CORRECT ANSWER - A degenerative bone disease characterized by a loss
of bone mass, increasing susceptibility to spontaneous fracture, and sometimes deformity of the
vertebral column; causes include aging, estrogen hyposecretion, and insufficient resistance
exercise
Exam Questions and CORRECT Answers
chondrocytes - CORRECT ANSWER - cartilage cell
tension - CORRECT ANSWER - force needed to stretch or change something
compression - CORRECT ANSWER - to press or squeeze together
torsion - CORRECT ANSWER - the twisting of a bodily organ
diaphysis - CORRECT ANSWER - The shaft of a long bone
epiphysis - CORRECT ANSWER - The head of a long bone
epiphyseal line/plane - CORRECT ANSWER - line that marks where the bone grew from
the epiphyseal plate- found in adults
marrow cavity - CORRECT ANSWER - cavity of bone containing red and or yellow bone
marrow
periosteum - CORRECT ANSWER - A layer of fibrous connective tissue covering the
surface of a bone
endosteum - CORRECT ANSWER - thin layer of cells lining the medullary cavity of a
bone
osteon - CORRECT ANSWER - A structural unit of compact bone consisting of a central
canal surrounded by concentric cylindrical layers of matrix
, osteoblast - CORRECT ANSWER - Bone- forming cell that arises from an osteogenic cell,
deposits bone matrix, and eventually becomes an osteocyte
osteocyte - CORRECT ANSWER - Mature bone cell formed when an osteoblast becomes
surrounded by its own matrix and entrapped in a lacuna
articular cartilage - CORRECT ANSWER - A thin layer of hyaline cartilage covering the
articular surface of a bone a a synovial joint, serving to reduce friction and ease joint movement
endochondral ossification - CORRECT ANSWER - The formation of bone in which a
cartilage template is gradually replaced by a bone matrix, as in the formation of long bones
calcification - CORRECT ANSWER - deposit of calcium in a tissue
PTH - CORRECT ANSWER - parathyroid hormone- a hormone secreted by the
parathyroid glands that raises blood calcium concentration by stimulating bone resorption by
osteoclasts, promoting intestinal absorption of calcium and inhibiting urinary secretion of
calcium
calcitonin - CORRECT ANSWER - which lowers calcium and phosphate concentration in
plasma and inhibits bone resorption
calcium - CORRECT ANSWER - chemical element, formation of bones, found in blood,
essential for normal function
osteoporosis - CORRECT ANSWER - A degenerative bone disease characterized by a loss
of bone mass, increasing susceptibility to spontaneous fracture, and sometimes deformity of the
vertebral column; causes include aging, estrogen hyposecretion, and insufficient resistance
exercise
