Vertebral foramen
Foramen
Vertebrae
dens
Lumen
The main idea of a passage is also called ?
The superior opening into the larynx is called the glottis. It is formed by the vocal folds and is responsible for regulating the passage of air into the respiratory system.
central point
central point
Meatus-A body opening or passage, such as the opening of the ear or the urethral canal. *American Heritage Dictionary
This would be called a cave.
the individual bones of the spine are called "Vertebrae"
lumen - the central opening within a tube or hollow organ.
Any passage or opening leading to the interior of the body is known as a meatus. The external opening through which urine passes out of the body is called the urinary meatus.