Liver, pancreas, skin and brain are examples of __________.
In human digestive system, the enzymes pepsin and trypsin are secreted respectively by : (a) pancreas and liver (b) stomach and salivary glands (c) pancreas and gall bladder (d) stomach and pancreas
A gland not associated with the alimentary canal is (a) pancreas (b) adrenal (c) liver (d) salivary glands