A rounded opeing through a bone is called a foramen.
It is called a Fissure
foramen
canal
fissure
Fissure
Meatus-A body opening or passage, such as the opening of the ear or the urethral canal. *American Heritage Dictionary
A smooth rounded end of the bone is called a condyle.
foramen magnum
The large hole in the occipital bone is called the foramen magnum and is the place where your spinal column comes up to meet your brain.
FORAMEN - Opening or passage in bones where blood vessels and nerves enter and leave. The foramen magnum is the opening of the occipital bone through which the spinal cord passes.
I believe the term you are looking for is a foramen which is an opening in the bone that allows blood vessels to pass through and/or connect to another point
A foramen (plural foramina) is the medical term meaning an opening in the bone through which vessels, nerves, and ligaments pass.
sphenoid
The Iris
The Iris
Meatus-A body opening or passage, such as the opening of the ear or the urethral canal. *American Heritage Dictionary
A smooth rounded end of the bone is called a condyle.
foramen magnum
The large hole in the occipital bone is called the foramen magnum and is the place where your spinal column comes up to meet your brain.
malleus,ear bone
Occipital bone: The bone that forms the rear and the rear bottom of the skull. The occipital bone encloses a large oval hole called the foramen magnum that allows passage of the spinal cord.
FORAMEN - Opening or passage in bones where blood vessels and nerves enter and leave. The foramen magnum is the opening of the occipital bone through which the spinal cord passes.