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1 |  |  Hydrostatic skeletons use _____ pressure inside a body wall. |
|  | A) | air |
|  | B) | water |
|  | C) | muscle |
|  | D) | gas |
|  | E) | gravitational |
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2 |  |  _____ initiate bone development; _____ form from them; and _____ break down and reabsorb bone. |
|  | A) | Osteoblasts, osteocytes, osteoclast |
|  | B) | Osteoclasts, osteocytes, osteoblasts |
|  | C) | Osteocytes, osteoblasts, osteoclasts |
|  | D) | Osteocytes, osteoclasts, osteoblasts |
|  | E) | Osteoblasts, osteoclasts, osteocytes |
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3 |  |  _____ joints can perform movement in all directions |
|  | A) | Hinge |
|  | B) | Combination |
|  | C) | Sliding |
|  | D) | Gliding |
|  | E) | Ball-and-socket |
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4 |  |  Actively contracting muscles get their energy from |
|  | A) | fatty acids. |
|  | B) | fructose |
|  | C) | glucose and glycogen. |
|  | D) | triglycerides. |
|  | E) | sucrose. |
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5 |  |  Convergent evolution has |
|  | A) | produced flight through one unique pathway. |
|  | B) | Produced terrestrial movement with several different pathways. |
|  | C) | Produced flight once. |
|  | D) | Produce terrestrial movement that works with gravity. |
|  | E) | Produced flight through many different pathways. |
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