Which is NOT a function of muscles?
Option C: This is a function of the digestive system. Transport of digested end products from the lumen of the GI tract to the blood or lymph is absorption, and for absorption to happen, the digested foods must first enter the mucosal cells by active or passive transport processes.
Options A, B, and D: These are functions of the muscular system.
Cause movement
Produce heat
Absorb nutrients
Maintain posture