1
A) run across the lamellae B) terminate in lacunae C) run the length of the bone D) are concentrated in the spongy bone 2
A) found in the interior of both the ends and long parts of bones B) restricted to the long parts of bones C) transitional between the ends and long parts of bones D) restricted to the ends of bones 3
A) are the Z bands of skeletal muscles B) are where two cardiac muscles are fused together C) separate smooth muscles from each other D) make up the pacemaker in the heart 4
A) front feet first B) back feet first C) an asymmetrical gait D) all four feet together 5
A) the replacement of spongy bone by compact bone in the growth plate B) the death of Haversian cells in the growth plate C) the filling of Haversian canals with calcium in the growth plate D) the complete conversion of the growth plate from cartilage to bone 6
++ ions are concentrated within the spaces of theA) actin filaments B) myosin filaments C) Z lines D) sarcoplasmic reticulum E) synovial capsule 7
++ ions bind toA) troponin B) tropomyosin C) myosin D) acetylcholine E) actin 8
A) acetylcholine B) ATP C) Ca++ D) troponin E) tropomyosin 9
A) Z lines B) sarcomere C) actin and myosin filaments D) all of the above E) none of the above 10
A) osteocyte, osteoblast B) osteoblast, osteocyte C) osteocyte, lamellae D) osteoblast, lamellae E) lamellae, Haversian canal 11
A) hydraulic skeletons B) exoskeletons C) endoskeletons D) all of the above E) none of the above 12
A) Fast-twitch muscle fibers have high levels of myoglobin. B) The lactate threshold for average healthy people is about 25-30%. C) Endurance training tends to cause muscle hypertrophy. D) Weight lifting promotes the development of oxidative muscle fibers more than glycolytic muscle fibers. E) Creatine phosphate is used by skeletal muscle to supply the phosphate needed to make ATP from ADP. 13
A) synovial joints B) sutures C) cartilaginous joints D) cross-bridges E) sarcomeres 14
A) cross-bridges B) ligaments C) tendons D) sutures E) marrow 15
A) bones attached to the insertion end of the muscles B) bones attached to the origin end of the muscles C) any bones attached anywhere to the muscles D) none; muscles can't move bones 16
A) 2 B) 4 C) 10 D) hundreds E) thousands 17
A) earthworms B) echinoderms C) arthropods D) all of the above E) none of the above 18
A) actin filaments B) Z lines C) myosin heads D) all of the above E) none of the above 19
A) myosin heads B) actin filaments C) myosin tails D) cross-bridges E) neurons 20
A) muscle cells B) flexors C) extensors D) sarcoplasms E) sarcomeres 21
A) recruitment B) summation C) tetanus D) synergists E) antagonists 22
A) osteocytes B) lamellae C) osteoblasts D) Haversians E) fontanels 23
A) pectoral girdle B) pelvic girdle C) femur D) skull E) all of the above are appendicular 24
A) the twisting of the actin filament B) the shortening of the actin filament C) the shortening of the myosin filament D) the actin filament pulling on the myosin filament E) the myosin filament pulling on the actin filament 25
A) actin -- major component of the A band of a sarcomere B) calmodulin -- calcium binding protein of smooth muscle C) myosin -- major component of thin filaments D) tropomyosin -- calcium binding protein of skeletal muscle E) troponin -- interferes with the binding of myosin to actin 26
A) compact bone B) spongy bone C) osteoblasts D) Haversian canals E) none of the above 27
A) True B) False 28
A) True B) False 29
A) True B) False 30
A) True B) False 31
A) True B) False 32
A) True B) False 33
A) True B) False
2002 McGraw-Hill Higher Education