[Mad Dawg]

Which "Holy Tradition" recounts which parts of Christ that were eaten at the Last Supper by the Disciples? He spoke literally, right? How much blood was drained from Christ and consumed by the Disciples?

(I'm already on record, repeatedly questioning the use of the word "literally" as confusing and imprecise.)
But here you go:
[Tertia Pars] Question 76. The way in which Christ is in this sacrament

You wouldn't be the first to ask the question or other ones like it. But if you really want to get into it, questions 73 through 83 of the Summa, Tertia Pars, are useful places to begin.

[Mad Dawg]

P.S. I'd recommend setting aside several hours to work through the questions. The Summa is a kind of an outline — for beginners, yeah, right — so sometimes it's painfully curt.

But if you're working at picking at Eucharistic teaching with questions like the one you asked, you pretty much have to read this.