Skeletal muscle breakdown produces predominantly liberation of which two amino acids?

C. Alanine

D. Glutamine.

DISCUSSION: Alanine is released from skeletal muscle and extracted by the liver, where it is converted to new glucose. Glutamine is also released from muscle and participates in renal acid-base homeostasis and serves as fuel for rapidly growing cells such as enterocytes, stimulated macrophages, and fibroblasts. Together, these two amino acids account for approximately two thirds of the nitrogen released from skeletal muscle.