29) The following are major steps in the process of intramembranous ossification: 1. Clusters of osteoblasts form osteoid that becomes mineralized. 2. Osteoblasts differentiate within mesenchymal connective tissue. 3. Spicules of bone radiate out from the ossification centers. 4. Mesenchymal cells aggregate. What is the correct order for these events? A) 4, 1, 2, 3 B) 2, 1, 3, 4 C) 4, 2, 1, 3 D) 2, 3, 1, 4 E) 3, 4, 2, 1 30) Which statement is true regarding calcium in bone matrix? A) Calcium is found in crystals called hydroxyapatite. B) Calcium is secreted by osteoblasts into the matrix. C) Once deposited, calcium cannot be removed from bone. D) Calcium provides flexibility to the bone matrix. E) Calcium is the organic part of the matrix. 31) Identify the mismatched pair. A) skull bones: 8 cranial and 14 facial bones B) bones associated with the skull: 6 auditory ossicles and 1 hyoid bone C) vertebral column: 24 vertebrae and 1 sacrum and 1 coccyx D) thoracic cage: sternum and 24 ribs and 2 clavicles E) is no mismatched pair 32) The ________ is the bony chamber that protects and supports the A) skull B) centrum C) cranium D) cephalum E) cortex 33) Infection of the process on the temporal bone would be called A) tinitis. B) encephalitis. C) meningitis. D) petrositis. E) mastoiditis.
29) The following are major steps in the process of intramembranous ossification: 1. Clusters of osteoblasts form osteoid that becomes mineralized. 2. Osteoblasts differentiate within mesenchymal connective tissue. 3. Spicules of bone radiate out from the ossification centers. 4. Mesenchymal cells aggregate. What is the correct order for these events? A) 4, 1, 2, 3 B) 2, 1, 3, 4 C) 4, 2, 1, 3 D) 2, 3, 1, 4 E) 3, 4, 2, 1 30) Which statement is true regarding calcium in bone matrix? A) Calcium is found in crystals called hydroxyapatite. B) Calcium is secreted by osteoblasts into the matrix. C) Once deposited, calcium cannot be removed from bone. D) Calcium provides flexibility to the bone matrix. E) Calcium is the organic part of the matrix. 31) Identify the mismatched pair. A) skull bones: 8 cranial and 14 facial bones B) bones associated with the skull: 6 auditory ossicles and 1 hyoid bone C) vertebral column: 24 vertebrae and 1 sacrum and 1 coccyx D) thoracic cage: sternum and 24 ribs and 2 clavicles E) is no mismatched pair 32) The ________ is the bony chamber that protects and supports the A) skull B) centrum C) cranium D) cephalum E) cortex 33) Infection of the process on the temporal bone would be called A) tinitis. B) encephalitis. C) meningitis. D) petrositis. E) mastoiditis.
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