2. What is a sharp, but slender/thin projection from a bone?

3. What is the smallest rough bump projecting from bone that is also used for muscle attachments?
4. What is the face or flat surface of a bone that articulates with another bone?
5. What is a bony projection from a bone?
6. What is a large rough bony projection, typically used for muscle attachments?

2. A sharp, but slender/thin projection from a bone is called a spine.

3. The smallest rough bump projecting from a bone that is also used for muscle attachments is called a tubercle.
4. The face or flat surface of a bone that articulates with another bone is called an articular surface.
5. A bony projection from a bone is called a process.
6. A large rough bony projection, typically used for muscle attachments, is referred to as a crest.