Chapter Review Page 167 a&P

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1. Why osseous tissue is considered a connective tissue? a. Osseous tissue is considered connective tissue because just like connective tissues, osseous tissue contains an abundant extracellular matrix that surrounds widely separated cells. 2. What is the path a nutrient would travel through compact bone tissue from its diffusion out of a blood vessel in the periosteum to an osteocyte located within the second osteon in from the surface of the bone? a. Nutrients travel through a nutrient artery, which enters through a nutrient forameth. This nutrient forameth enters from the center of the diaphysis and travels to the medullary cavity, splitting into a proximal and distal branch that supplies the inner part of the compact bone tissue, spongy bone tissue and red bone marrow; as far as the epiphyseal plate. The nutrient artery exits in the diaphysis. 3. What effect would the gravity- free environment of space have on an astronaut’s bones? a. The effects that a gravity-free environment could have on an astronaut’s bones is the experience of space could eventually weaken the bones and could present problems when a person comes back to earth and return to a weight bearing environment. 4. Compare and Contrast the microscopic appearance, location and function of spongy and compact bones? a. Long bones consist mostly of compact bone tissue in the diaphysis and have some amounts of spongy bone tissue in the epiphyses. Short, flat, and irregular bones consist mainly of spongy bone tissue, except at the surface, where there is compact bone. Compact bone tissue contain less spaces and forms the external layer of all bones. Compact bone tissue provide protection and support, it also resists the stresses produced by weight and movement. Compact bones are arranged in repeating structural units called osteons. Spongy tissue bones does not contain osteons. They consist of

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