BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 45, Problem 4A
How can osteocytes remain alive within bone?
a. Bones are composed of only dead or dormant cells.
b. Haversian canals are bone structures that contain blood vessels that provide materials for the osteocytes.
c. Osteocytes have membrane extensions that protrude from bone and allow them to exchange materials with the surrounding fluids.
d. Bones are hollow in the middle and the low pressure there draws fluid from the blood that nourishes the osteocytes.
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Students have asked these similar questions
Osteoclasts arise from ?
a. osteocytes
b. osteoblasts
c. osteoprogenitor cells
d. osteoclasts
Why is cartilage slow to heal?a. because it eventually develops into boneb. because it is semi-solid and flexiblec. because it does not have a blood supply
d. because endochondral ossification replaces allcartilage with bone
Using easy to understand language explain the difference between osteocyte, osteoblast, osteoclast.
Chapter 45 Solutions
BIOLOGY
Ch. 45.1 - Compare hydrostatic skeletons, exoskeletons, and...Ch. 45.1 - Explain how animals with hydrostatic skeletons...Ch. 45.2 - Prob. 1LOCh. 45.2 - Prob. 2LOCh. 45.2 - Prob. 3LOCh. 45.3 - Prob. 1LOCh. 45.4 - Prob. 1LOCh. 45.4 - Prob. 2LOCh. 45.4 - Prob. 3LOCh. 45.5 - Prob. 1LO
Ch. 45.5 - Describe how friction and gravity affect...Ch. 45.5 - Prob. 3LOCh. 45 - Prob. 1IQCh. 45 - Exoskeletons and endoskeletons differ in that a....Ch. 45 - Worms use a hydrostatic skeleton to generate...Ch. 45 - Bone develops by one of two mechanisms depending...Ch. 45 - Which of the following statements best describes...Ch. 45 - Motor neurons stimulate muscle contraction via the...Ch. 45 - Prob. 6UCh. 45 - If you wanted to study the use of ATP during a...Ch. 45 - Place the following events in the correct order....Ch. 45 - You take X-rays of two individuals. Ray has been a...Ch. 45 - You have identified a calcium storage disease in...Ch. 45 - How do the muscles move your hand through space?...Ch. 45 - How can osteocytes remain alive within bone? a....Ch. 45 - Swimming underwater using forelimbs for propulsion...Ch. 45 - If a drug inhibits the release of ACh, what will...Ch. 45 - Prob. 1SCh. 45 - Prob. 2SCh. 45 - The nerve gas methylphosphonofluoridic acid...Ch. 45 - If natural selection favors the evolution of wings...
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- Intramembranous ossification ________. gives rise to the bones of the limbs produces the bones of the top and sides of the skull produces the bones of the face and base of the skull involves the conversion of a hyaline cartilage model into bonearrow_forwardThe pectoral girdle supports the_______. a. arms b. legs c. skull d. thoracic cagearrow_forwardWhich is the longest bone in humanbody?A. febula B. Tibia C. Stapes D. Femurarrow_forward
- If osteocytes did not have gap junctions in their cell membranes, would they be able to survive? Explain.arrow_forwardOsteoporosis is a disease that results from loss of bone mass, causing bones to become brittle and break more easily. Infer why calcitonin is given as a treatment for people with Osteoporosis.arrow_forwardCells in the outer lamella of an osteon receive nutrients: a) by diffusion through the extracellular matrix b) by diffusion from surrounding blood vessels c) by cell-to-cell transfer through gap junctions d) directly from the blood in perforating canalsarrow_forward
- Explain how the two growth plates in a long bone account for the ability of a long bone to lengthenarrow_forwardOssification of ends of long bones is produced by what?arrow_forwardThe function of osteoblasts is to: a.break down bone b.produce blood cells c.produce collagen for bone matrix d.add new tissue to the periosteum e.provide nourishment to the cells of the articular cartilagearrow_forward
- In a given osteon, which lamellae are the oldest , those immediately adjacent to the central canal or those around the perimeter of the osteon? Explain your answer.arrow_forwardExplain the relationship between calcium and bones. Why is vitamin D important for bone health.arrow_forwardHow can a forensic anthropologist determine if human bone is modern or archaeological? A. By asking the police if the bones came from a crime scene B. Forensic anthropologists are only ever allowed to handle modern human bone C. By radiocarbon dating the bone D. By interviewing potential suspectsarrow_forward
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