Question 13

The tissue is spongy bone.

Spongy bone is characterized by its porous structure, featuring open spaces that are often filled with marrow or other materials, along with a network of needle-like trabecular structures. This unique composition allows for reduced weight while maintaining structural integrity.

A) Spongy bone

This option is correct as spongy bone is specifically defined by its open spaces and the presence of trabecular structures resembling needles. The architecture of spongy bone is designed to provide support and flexibility, making it the most fitting choice given the description in the question.

B) Compact bone

Compact bone is more dense and solid compared to spongy bone, lacking the open spaces described in the question. It forms the outer layer of bones and provides strength, but it does not have the needle-like structures or open spaces characteristic of spongy bone, making this option incorrect.

C) Cartilage

Cartilage is a flexible connective tissue that does not contain the needle-like structures found in spongy bone. It is primarily composed of a gel-like matrix and is not characterized by open spaces filled with assemblies of structures, rendering this option inaccurate in this context.

D) Adipose tissue

Adipose tissue, or fat tissue, consists mainly of fat cells and serves primarily as an energy reserve. It does not feature the needle-like structures or the open spaces described in the question, thus making it an unsuitable choice compared to spongy bone.

Conclusion

Spongy bone is the only option that accurately reflects the description provided in the question due to its unique porous structure and needle-like formations. The other options either lack the required characteristics or present fundamentally different tissue types, confirming that spongy bone is the clear and correct answer.