According to Arizona State University (ASU), "spongy" bone is not dense because it contains holes or "pores." These open areas contain blood marrow, nerves, and blood vessels that transport cells and nutrients. Although the appearance of these bones resembles a sponge, ...
Spongy bone lacks the functional tube-like units called osteon found in compact bone. Osteon are formed by a network of small canals along with osteocyte cells lined up in rings around the canals. They are responsible for providing a channel for blood vessels, veins and...
Spongy bone, also called cancellous or trabecular bone, provides structural support and facilitates movement of the joints and limbs. Spongy bone is light and porous and found in most parts of the body and in other bones that do not typically endure large volumes of mec...
The main differences between compact bone and spongy bone are their structures and the way each functions. Both types of bone tissues are necessary for movement of the body and support of the skeletal system.
Trabeculae refers to the network of spiny bone processes that make up the framework of spongy bone. Red or yellow marrow is located in the spaces between each trabecula. The type of marrow depends on the person's age and in which bone it is located.
Bone tissue is made up mostly of calcium and collagen, which is a protein. The outer layer of bone is hard and dense and called compact or cortical bone. The inner layer is called trabecular or cancellous bone. It is lighter than the compact bone and porous.
The main function of the spongy layer inside the leaf is the diffusion of carbon dioxide gas through the air spaces found in this region. The spongy layer is part of the mesophyll and consists of irregular-shaped cells and air spaces. Inside the leaf, the mesophyll is t...