The diagram illustrates the mechanisms that regulate the concentration of glucose in the blood. Which row correctly names the glands and hormones labelled W, X, Y and Z?
- Agland W: adrenal gland; hormone X: adrenaline; gland Y: adrenal gland; hormone Z: glucagon
- Bgland W: adrenal gland; hormone X: adrenaline; gland Y: pancreas; hormone Z: insulin
- Cgland W: pancreas; hormone X: glucagon; gland Y: adrenal gland; hormone Z: insulin
- Dgland W: pancreas; hormone X: insulin; gland Y: pancreas; hormone Z: glucagon