Ramus
ramus
Ramus.
The spine is a projection of bones that form the vertebral column. It is not a depression.
projection
projection
projection
....opening?
is a depression
A fissure is an opening or crack in the Earth's crust, typically where tectonic plates meet. It is not a projection or depression, but rather a narrow, long fracture in the ground.
what is white ramus?
A crest is an upward projection or peak on a surface, while a depression is a downward area or hollow. Both terms are often used in geology to describe the topography of landforms.