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PSIO 201Exam 2 University of Arizona QUESTIONS AND ANSWERS GRADED A $12.49   Add to cart

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PSIO 201Exam 2 University of Arizona QUESTIONS AND ANSWERS GRADED A

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PSIO 201--Exam 2-- University of Arizona QUESTIONS AND ANSWERS GRADED A+ Bone Types Periosteum Endosteum Why is bone considered an organ? Osteogenic Cells Osteoblasts Osteocytes Osteoclasts Bone Modeling Bone Remodeling Cartilage Tissue Bone Tissue Collagen Minerals Rickets (Inorgani...

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  • March 26, 2024
  • 9
  • 2023/2024
  • Exam (elaborations)
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PSIO 201--Exam 2-- University of Arizona
QUESTIONS AND ANSWERS GRADED A+

1). Bone types

 Ans: Long, Short, Flat, Irregular, Sesamoid, Sutural, Pneumatized


2). Periosteum

 Ans: Covers external surface of bone


3). Endosteum

 Ans: Lines inner surface of bone, contains osteogenic cells


4). Why is bone considered an organ?

 Ans: It contains osseous (connective) tissue, blood vessels, nerves, lymphatic vessels,
cartilage, and connective tissue coverings


5). Osteogenic cells

 Ans: Stem cells formed from mesenchyme (embryonic connective tissue)


6). Osteoblasts

 Ans: Build bone


7). Osteocytes

 Ans: Maintenance of bone


8). Osteoclasts

 Ans: Break down bone



Bone modeling


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, 9).
 Ans: Bone formed by osteoblasts without prior bone resorption


10). Bone remodeling

 Ans: Bone resorbed by osteoclasts and then formed by osteoblasts


11). Cartilage tissue

 Ans: Chondrocytes; gel-like substance containing proteoglycan, elastic, collagen, or
reticular fibers


12). Bone tissue

 Ans: Osteocytes; solid ground substance containing proteoglycans, collagen elastic
fibers, hydroxyapatite


13). Collagen

 Ans: Provides flexibility & resistance to tension


14). Minerals

 Ans: Provide firmness (resistance to compression)


15). Rickets (inorganic)

 Ans: Calcium deficiency due to lack of vitamin D leads to flexible bones (bowed legs)


16). Scurvy (organic)

 Ans: Vitamin C deficiency impairs collagen synthesis and leads to brittle bones


17). Sponge bone organization

 Ans: Irregular lattice of thin plates called trabeculae; Osteocytes house in lacunae




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