- A Insulin, from the pancreas
- B Thyroxine, from the thyroid
- C Glucagon, from the pancreas
- D Oxytocin, from the pituitary
Correct answer: B. Thyroxine, from the thyroid
Explanation: Thyroxine regulates the basal metabolic rate, influencing the metabolism of carbohydrates, proteins and fats in almost all body tissues.
Concept context
The endocrine glands, hormone classification and mechanism of action, and negative feedback regulation.