Question | a | b | c | d | e |
Which is a function of the skeletal system? | (a) support | (b) hematopoietic site | (c) storage | (d) providing levers for muscle activity | (e) all of these |
A bone with approximately the same width, length, and height is most likely | (a) a long bone | (b) a short bone | (c) a flat bone | (d) an irregular bone | (e) |
The shaft of a long bone is properly called the | (a) epiphysis | (b) periosteum | (c) diaphysis | (d) compact bone | (e) |
Sites of hematopoiesis include all but | (a) red marrow cavities of spongy bone | (b) the diploë of flat bones | (c) medullary cavities in bones of infants | (d) medullary cavities in bones of a healthy adult | (e) |
An osteon has | (a) a central canal carrying blood vessels | (b) concentric lamellae | (c) osteocytes in lacunae | (d) canaliculi that connect lacunae to the central canal | (e) all of these |
The organic portion of matrix is important in providing all but | (a) tensile strength | (b) hardness | (c) ability to resist stretch | (d) flexibility | (e) |
The flat bones of the skull develop from | (a) areolar tissue | (b) hyaline cartilage | (c) fibrous connective tissue | (d) compact bone | (e) |
The remodeling of bone is a function of which cells? | (a) chondrocytes and osteocytes | (b) osteoblasts and osteoclasts | (c) chondroblasts and osteoclasts | (d) osteoblasts and osteocytes | (e) |
Bone growth during childhood and in adults is regulated and directed by | (a) growth hormone | (b) thyroid hormones | (c) sex hormones | (d) mechanical stress | (e) all of these |
Where within the epiphyseal plate are the dividing cartilage cells located? | (a) nearest the shaft | (b) in the marrow cavity | (c) farthest from the shaft | (d) in the primary ossification center | (e) |
Wolff’s law is concerned with | (a) calcium homeostasis of the blood | (b) the thickness and shape of a bone being determined by mechanical and gravitational stresses placed on it | (c) the electrical charge on bone surfaces | (d) | (e) |
Formation of the bony callus in fracture repair is followed by | (a) hematoma formation | (b) fibrocartilaginous callus formation | (c) bone remodeling to convert woven bone to compact bone | (d) formation of granulation tissue | (e) |
The fracture type in which the bone ends are incompletely separated is | (a) greenstick | (b) compound | (c) simple | (d) comminuted | (e) compression |
The disorder in which bones are porous and thin but bone composition is normal is | (a) osteomalacia | (b) osteoporosis | (c) Paget’s disease | (d) | (e) |