Without more context, it's difficult to ascertain who GK Pal is or their contributions to physiology. It's possible that GK Pal could be:
The 'a' wave, he thought, was the atrium pushing its last bit of blood into the ventricle—the final squeeze of the old year. The 'c' wave was the tricuspid valve bulging back like a bouncer pushing against a crowd as the ventricle began to contract. The 'x' descent was the relaxation, the atrium sucking in blood from the veins as the ventricle pulled the floor down. The 'v' wave was the atrium filling up, waiting for the tricuspid door to open. And the 'y' descent was the flood—the moment the door opened and blood poured into the hungry ventricle. gk pal physiology
"Rohan," she said, eyes gleaming behind her spectacles. "A patient presents with muscle weakness that worsens with repetitive use. Their calcium release is normal, but the number of cross-bridge cycles is diminished. Where is the lesion? From GK Pal, chapter on Muscle Physiology." Without more context, it's difficult to ascertain who