Chapter 5

The functional units of compact bone are called a. osteoblasts. b. striations. c. osteons. d. osteocytes.

Which functions does bone perform? a. blood cell production b. support c. storage of fat d. all of the above

Where in a bone is fat stored? a. central canal b. red bone marrow c. periosteum d. yellow bone marrow

Which of the following hormones raises the blood level of calcium? a. calcitonin b. estrogen c. parathyroid hormone d. all of the above

Which of the following is not a bone of the axial skeleton? a. skull b. vertebra c. femur d. sternum

What is the difference between compact and spongy bone? a. Compact bone is firm, and spongy bone is rubbery. b. They are hardened by different minerals. c. Spongy bone has larger cells than compact bone has. d. They have different arrangements of bone cells.

_____ hold(s) two bones together at a joint. a. Tendons b. Ligaments c. Cartilage d. The periosteum

_____is a decrease in bone density that causes a weakened bone. a. Osteomalacia b. Osteoblast c. Osteoporosis d. Osteon

Which bones comprise the pectoral girdle? a. carpals and metacarpals b. clavicle and scapula c. sternum and vertebrae d. all of the above

The action opposite to extension is a. abduction. b. rotation. c. flexion. d. pronation.

Of the following persons, which one would you expect to have the densest bones? a. an elderly woman whose favorite pastime is knitting b. a 16 -year-old female who swims regularly c. a 33 -year-old male who loves to drink milk and plays basketball regularly d. a 50 -year-old male workaholic with a desk job

The cells that form bone are called _______.