15) GLUCAGON

[Editor]

a) is produced by pancreatic beta cells
b) is a polypeptide hormone
c) secretion is stimulated during fasting
d) inhibits insulin production
e) is negatively inotropic

[Editor]

a] F – by alpha cells.
B] T- linear polypeptide 29 AA residues.
C] T – in stress, exercise,bete adrenergic stimulation.
D] F – stimulates secretion of insulin,GH, somatostatin.
E] F – iono and chronotropic actions on heart possibly due to increased calcium transport into myocardial cells via adenylate cyclase activation.