The glucose homeostasis in blood is maintained by

Glucagon and insulin hormone can be distinguished based on

1. Location of receptors i.e. intracellular or extracellular

2. Their source gland

3. Hepatocytes as target cells

4. Their role in the mechanism of maintaining glucose homeostasis

Which of the following is true about Pancreas

Given ahead is an incomplete table about certain hormones, their source glands and one major effect of each on the body in humans. Identify the correct option for the three blanks A, B and C.

Options :

      A                B                 C

1. Placenta  Insulin         Vasopressin
2. Ovary     Insulin         Calcitonin      
3. Placenta  Glucagon     Calcitonin
4. Ovary     Glucagon     Growth hormone

Select the correct statement about hormones and their actions.

1. Parathyroid hormone increases ${\mathrm{K}}^{+}$ absorption of the body.

2. Insulin and glucagon helps to maintain blood sugar levels.

3. Old aged people have weak immunity due to increased activity of thymus.

4. Osteoporosis in women occurs due to increased levels of oestrogens.

Which of the following is responsible for hyperglycemia

Which of the following statements regarding glucagon is false?
1. It is secreted by $\mathrm{\alpha }$-cells of Langerhans.
2. It acts antagonistically to insulin. 
3. It decreases blood sugar level.
4. The gland responsible for its secretion is heterocrine gland

Which of the following represents the action of insulin?

1. Increases blood glucose level by stimulating glucagon production.

2. Decreases blood glucose level by forming glycogen. 

3. Increases blood glucose level by promoting cellular uptake of glucose.

4. Increases blood glucose level by hydrolysis of glycogen. 

Which of the following hormones is incorrectly paired with its action?

1. oxytocin–stimulates uterine contractions during childbirth

2. thyroxine–stimulates metabolic processes

3. insulin–stimulates glycogen breakdown in the liver

4. ACTH–stimulates the release of glucocorticoids by the adrenal cortex

Which of the following is true about Islet of Langerhans