Class 11 NEET Biology Chemical Coordination and Integration

The correct answer is option (3) because
• Epinephrine is an emergency hormone, also known as adrenaline and is secreted from adrenal medulla.
• Thyroxine is secreted from thyroid gland and plays an important role in regulation of basal metabolic rate.
• Oxytocin is a peptide hormone synthesised by hypothalamus and released by posterior pituitary. It causes smooth muscle contraction.
• Glucagon is secreted from α -cells of pancreas, acts mainly on hepatocytes and stimulates glycogenolysis resulting in an increased blood sugar level or hyperglycemia.