What is the function of pancreatic somatostatin?

Which gland is responsible for the process of converting glucose into glycogen in the liver?

Which organ in a rabbit acts as both an endocrine and an exocrine gland?

Blood sugar level can be decreased by

$A$ sample of urine was diagnosed to contain a high content of glucose and ketone bodies. Based on this observation, answer the following:
$(a)$ Which endocrine gland and hormone is related to this condition?
$(b)$ Name the cells on which this hormone acts.
$(c)$ What is the condition called and how can it be rectified?

Glucagon is secreted by ........