parietal cell stimulation chart, medical

cell secretes microvilli hydrochloric mucosa epithelium gastric digestive microscopic nucleus acid anatomical stomach lining health anatomy human body parietal diagram healthy science medicine medical gastrin mucous structure gland mucus digestion physiology hcl intrinsic stimulated secretion epithelial mitochondria vector histology abdominal stimulation chart acetylcholine histamine stimulate generation neuron circulation chart cell generation