Home ยป In which one of the following is extra blood stored and is released when shortage occurs? Circulatory System MCQs In which one of the following is extra blood stored and is released when shortage occurs? April 22, 2022 5 Views Q. In which one of the following is extra blood stored and is released when shortage occurs? A. Adrenal gland B. Pancreas C. Spleen D. Thyroid gland Answer: Spleen