Multiple Choice
Osteonecrosis is a condition where blood flow to bones is cut off resulting in tissue death. Which of the following would you expect to be most directly affected by the loss of blood flow?
4. Tissues & Histology
Specialized Connective Tissue: Bone
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Which tissue is characterized by lacunae containing osteocytes, a matrix mineralized with calcium salts (hydroxyapatite), and the presence of blood vessels within canaliculi and central (Haversian) canals?
A
Hyaline cartilage
B
Dense regular connective tissue
C
Adipose tissue
D
Compact bone (osseous tissue)
Verified step by step guidance1
Identify the key characteristics described in the problem: lacunae containing osteocytes, a matrix mineralized with calcium salts (specifically hydroxyapatite), and the presence of blood vessels within canaliculi and central (Haversian) canals.
Recall that lacunae are small spaces within the tissue matrix that house cells; in this case, osteocytes are the mature bone cells found in these lacunae.
Understand that hydroxyapatite is a mineral compound composed mainly of calcium and phosphate, which provides hardness and strength to the tissue matrix, a hallmark of bone tissue.
Recognize that canaliculi are tiny channels that connect lacunae, allowing for nutrient and waste exchange between osteocytes and blood vessels located in the central (Haversian) canals.
Compare these features with the options given: hyaline cartilage lacks mineralized matrix and blood vessels, dense regular connective tissue does not have lacunae or osteocytes, and adipose tissue is primarily fat storage without these structures. Therefore, the tissue described is compact bone (osseous tissue).
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