Which of the following systems produces a hormone that stimulates bone growth?

• A. Excretory system
• B. Digestive system
• C. Endocrine system
• D. Respiratory system

Answer: (C)

Verified step by step guidance

1. Step 1: Understand the role of hormones in stimulating bone growth. Hormones are chemical messengers produced by specific glands in the body, and they regulate various physiological processes, including growth and development.
2. Step 2: Identify the system responsible for producing hormones. The endocrine system is a network of glands that secrete hormones directly into the bloodstream to regulate body functions.
3. Step 3: Recognize the specific hormone involved in bone growth. The endocrine system produces growth hormone (GH), which is secreted by the pituitary gland. GH stimulates the growth of bones and tissues.
4. Step 4: Compare the functions of the other systems listed in the problem. For example, the excretory system removes waste, the digestive system processes food, and the respiratory system facilitates gas exchange. None of these systems produce hormones related to bone growth.
5. Step 5: Conclude that the endocrine system is the correct answer because it produces growth hormone, which directly stimulates bone growth.