Tubercle (bone)
Tubercle (bone)
Tubercle (pronunciation: /ˈtjuːbərkl/) is a small, rounded prominence or process on a bone, typically serving as an attachment point for muscles and ligaments. The term is derived from the Latin word tuberculum, meaning a small swelling or lump.
Etymology
The word tubercle comes from the Latin tuberculum, which is a diminutive form of tuber, meaning a lump or swelling. This term was used in anatomy to describe small, rounded protuberances found on bones.
Types of Tubercles
There are several types of tubercles that can be found on different bones in the body. Some of these include:
- Greater tubercle: This is found on the humerus bone in the upper arm. It serves as an attachment point for the rotator cuff muscles.
- Lesser tubercle: This is also found on the humerus bone and serves as an attachment point for the subscapularis muscle.
- Tubercle of rib: This is a small bump on the back of the rib where it joins with the vertebrae.
- Tubercle of the upper lip: This is a small bump on the upper lip where the connective tissue of the lip meets the gum tissue.
Related Terms
- Tuberosity: This is a larger, roughened area on a bone, typically serving as an attachment point for muscles and ligaments.
- Process (anatomy): This is a projection or outgrowth on a bone that can serve as an attachment point for muscles or ligaments, or can help form joints.
See Also
External links
- Medical encyclopedia article on Tubercle (bone)
- Wikipedia's article - Tubercle (bone)
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