Dictionary > Substantia spongiosa

Substantia spongiosa

Definition
noun
The osseous tissue that fills the interior or cavity of bones with a latticework of small spicules or flat pieces of mineralized bars (trabeculae) and interstices containing bone marrow or fat.
Supplement
This type of osseous tissue lies subjacent to the compact bone, and is made distinct by its spongy structure. It has low density and strength but has high surface area that allows room for blood vessels and marrow. The outer surface layer of this tissue contains the red bone marrow where hematopoiesis takes place.
Word origin: spongy < from Latin spongia, from Greek spongiā, from spongos; bone.
Synonym: cancellous bone, trabecular bone, spongy substance, spongiosa.

Compare: compact bone.

See also: bone marrow, hematopoiesis.


You will also like...

Gene Regulation in Eukaryotes
Gene Regulation in Eukaryotes

Learn about the general structure of a eukaryotic gene, the transcription factors, and post-transcriptional regulation....

Water Cycle
The Water Cycle

The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..

Nephrolepis exaltata
Vascular Plants: Ferns and Relatives

Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..

Adaptation Tutorial
Adaptation Tutorial

Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..

Schematic diagram of DNA replication
DNA Structure & DNA Replication

DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..

DNA carries genes coding for proteins
Genetic Information and Protein Synthesis

Genes are expressed through the process of protein synthesis. This elaborate tutorial provides an in-depth review of the..