It has a tubular appearance
The Midbrain is the topmost part of the mesencephalon, and so damaging the mesencephalon could potentially harm the midbrain, but only if that is the part of the mesencephalon you damaged.
Yes
Yes
The midbrain
mesencephalon.
Yes
superior and inferior colliculi
It is also called the mesencephalon
Yes
Midbrain also called the mesencephalon
midbrain (or mesencephalon), pons, and medulla oblongata
Prosencephalon = develops to Telencephalon and Diencephalon = Cerebral hemispheres and collectively Thalamus,Hypothalamus, eyes, pineal gland. Mesencephalon = Mesencephalon = Midbrain Rhombocephalon = Metencephalon and Myelencephalon = Pons & Cerebellum