Definition

A thin layer of cells that lines the inner surface of bones, specifically the medullary cavity.

Example

The endosteum plays a crucial role in bone growth and repair.

Conversation

Did you know that the endosteum is really important for bone health?

I had no idea! What does it do exactly?

It lines the medullary cavity and helps with bone growth and repair.

That makes sense! Bones are more complex than I thought.

Synonyms & Antonyms

Root Explanation

Endosteum → It is formed from "endo-" (from Greek "endon", meaning within) and "osteon" (from Greek "osteon", meaning bone). The word "endosteum" refers to the thin layer of tissue that lines the inner surface of bones, indicating its location within the bone structure.

Memory Tip

Think of 'within' ('endo-') and 'bone' ('osteon') to remember that 'endosteum' is the tissue that lines the inside of bones.

Visually Confused Words