- Sclera is the outer coat of the eyeball covering it from the edge of the cornea to the dura mater of the optic nerve. Together with the cornea it forms the outer coat of the eyeball and ensures the stable shape of the eye.
- and right part of the heart.
- A natural or artificial connection between two hollow, usually separate structures (e.g., blood vessels).
- Stenosis is an abnormal narrowing of blood vessels or other hollow structures.