The calcium pump or calcium ATPase

Question

Quizplus · Accepted Answer

The calcium pump, also known as the calcium ATPase, is responsible for removing calcium from the sarcoplasm (cytoplasm of muscle cells) after muscle contraction. This is an active process that requires the hydrolysis of ATP to energize the pump and move calcium against its concentration gradient out of the cell. The other choices are incorrect - the T tubule is a structure that conducts action potentials to the interior of muscle fibers and does not directly affect calcium concentration, the calcium pump does not increase calcium levels in the axon terminal (which is important for neurotransmitter release), and the calcium pump is an active process rather than passive. Bone density is not directly related to the calcium pump, although calcium is important for bone health.

The Calcium Pump or Calcium ATPase