Which of the following statement is correct ?

Options

A. Hormone produced in thyroid stimulates metabolism
B. Hormone produced in ovary affects the uterine contraction
C. Hormone produced in small intestine stimulates heart
D. Hormone produced in adrenal cortex stimulates heart beat

Answer

To determine which statement is correct, let's analyze each statement step by step:

1. **Statement 1**: "Hormones produced in the thyroid stimulate metabolism."
- The thyroid gland produces hormones T3 (triiodothyronine) and T4 (thyroxine).
- These hormones play a crucial role in regulating metabolism in the body.
- **Conclusion**: This statement is correct.

2. **Statement 2**: "Hormones produced in the ovary affect uterine contraction."
- Hormones produced in the ovaries, such as estrogen and progesterone, primarily regulate the menstrual cycle and reproductive functions.
- Uterine contractions are primarily influenced by oxytocin, which is produced in the hypothalamus and released from the posterior pituitary gland.
- **Conclusion**: This statement is incorrect.

3. **Statement 3**: "Hormones produced in the small intestines stimulate the heart."
- The small intestine produces hormones like secretin and cholecystokinin, which are involved in digestion and do not directly stimulate the heart.
- The hormones that stimulate the heart are produced in the adrenal medulla, such as epinephrine and norepinephrine.
- **Conclusion**: This statement is incorrect.

4. **Statement 4**: "Hormones produced in the adrenal cortex stimulate heart rate."
- The adrenal cortex produces corticosteroids, which are involved in stress response, metabolism, and immune response, but do not directly stimulate heart rate.
- The hormones that stimulate heart rate are produced in the adrenal medulla (catecholamines like epinephrine).
- **Conclusion**: This statement is incorrect.

**Final Conclusion**: The only correct statement is Statement 1: "Hormones produced in the thyroid stimulate metabolism."