HOSA Dental Terminology Practice

What is cancellous bone known for?

1. A solid dense structure

2. A latticelike bone that fills the interior of the alveolar process

3. A type of bone found in the skull only

4. A layer found in long bones only

The correct answer is: A latticelike bone that fills the interior of the alveolar process

Cancellous bone, also known as spongy bone or trabecular bone, is recognized for its porous and latticelike structure, which indeed fills the interior of the alveolar process. This type of bone is less dense than cortical bone (the hard outer layer) and is crucial for reducing the overall weight of the bone while maintaining strength. The lattice structure is effective in supporting the body's weight and provides a space for bone marrow, where blood cells are produced. Its presence in the alveolar process is particularly important for dental health, as it supports the teeth and helps absorb forces during chewing. The other options present misunderstandings regarding cancellous bone. A solid dense structure describes cortical bone rather than cancellous bone; cancellous bone is characterized by its lightweight and porous design. The mention of it being only found in the skull is inaccurate, as cancellous bone is present throughout the body, particularly in the ends of long bones and in other areas such as the pelvis and vertebrae. Lastly, stating that it is a layer found in long bones only is misleading as cancellous bone is not restricted to any specific type of bone but rather is widely distributed across various skeletal regions.