A.Islets of Langerhans and secrete glucagon
B.Gastric epithelium and secrete mucus
C.Gastric glands and secrete HCI
D.Kidnevs and secrete renin
A.Islets of Langerhans and secrete glucagon
B.Gastric epithelium and secrete mucus
C.Gastric glands and secrete HCI
D.Kidnevs and secrete renin