Answer:
Marking mortal privation when firmly in place. An enduring summation inscribed in my face.
What begins with T ends with T and has T in it?
I taste better than I smell. What am I?
I'm really blue but when you see me I'm red. You don't see me too often. I'm there for you if you're hurt.
I am needed for most animals and hardcover books. What am I?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.