Question

1. for each statement that is true, insert t in the answer blank. for false statements, correct the underlined words by inserting the correct words in the answer blanks.
2. when a bone forms from a fibrous membrane, the process is called endochondral ossification.
3. when trapped in lacunae, osteoblasts change into osteocytes.
4. large numbers of osteocytes are found in the inner periosteum layer.
5. primary ossification centers appear in the epiphyses of a long bone.
6. epiphyseal plates are made of spongy bone.
7. in appositional growth, bone reabsorption occurs on the periosteal surface.
8. \maturation\ of newly formed (noncalcified) bone

Explanation:

1. When a bone forms from a fibrous membrane, it is intramembranous ossification. Endochondral ossification is from cartilage.
2. Osteoblasts become osteocytes when in lacunae. This is correct.
3. Osteoblasts (not osteocytes) are in the inner periosteum layer for bone formation.
4. Secondary ossification centers are in epiphyses. Primary is in diaphysis.
5. Epiphyseal plates are hyaline cartilage (not spongy bone) for growth.
6. In appositional growth, bone reabsorption is on the endosteal (not periosteal) surface.
7. No underlined word. Assuming it's about time. Newly formed bone matrix mineralization takes about 10 - 14 days. But without underlined word, hard to correct precisely.

Answer:

1. intramembranous ossification
2. T
3. osteoblasts
4. Secondary
5. hyaline cartilage
6. endosteal
7. (If underlined word was about time, but since not clear, hard to give exact. If no underlined word error, maybe T if statement is correct in context. But more info needed.)