Question

The processes of intramembranous and endochondral ossification are similar in several respects. which of the following statements applies to both intramembranous and endochondral ossification?

options:
A. both processes form spongy bone.
B. both processes require a precursor of connective tissue membranes.
C. in both processes, bone replaces cartilage.
D. heterotopic bones or ectopic bones.
E. chondrocytes participate in both processes.

Answer 1

Both intramembranous and endochondral ossification processes ultimately result in the formation of spongy bone, despite starting from different precursors.

Step-by-step explanation:

The processes of intramembranous and endochondral ossification contribute to the development of the skeletal system but involve different precursors and steps. Option A, both processes form spongy bone, applies to both intramembranous ossification, which starts from fibrous membranes and contributes to the formation of flat bones such as those in the skull, and to endochondral ossification, which begins with hyaline cartilage and is responsible for the formation of long bones such as those in the limbs. While intramembranous ossification involves the differentiation of mesenchymal cells into osteoblasts that create spongy bone directly, endochondral ossification involves a cartilage model that is eventually replaced by bone, but also results in the creation of spongy bone within the growing bone structure.