The system(s) which coordinate different functions of the body is/are

Options

A. Nervous system only
B. Endocrine system only
C. Digestive system and nervous system
D. Nervous system and endocrine system

Answer

To solve the question regarding which systems coordinate different functions of the body, we will analyze the options provided and understand the roles of each system mentioned.

### Step-by-Step Solution:

1. **Identify the Systems Mentioned**:
- The question lists four options:
- Nervous system only
- Endocrine system only
- Digestive system
- Nervous system and endocrine system

2. **Understand the Role of the Digestive System**:
- The digestive system is primarily responsible for the breakdown of food and absorption of nutrients. It does not coordinate functions across different body systems; rather, it focuses on digestion.

3. **Analyze the Nervous System**:
- The nervous system is responsible for rapid coordination of body functions. It transmits signals quickly between different parts of the body, allowing for immediate responses to stimuli. This coordination is point-to-point and short-term.

4. **Examine the Endocrine System**:
- The endocrine system consists of glands that secrete hormones directly into the bloodstream. These hormones act as chemical messengers that regulate various body functions over a longer duration. The endocrine system coordinates functions by influencing target cells throughout the body.

5. **Conclusion**:
- Both the nervous system and the endocrine system play crucial roles in coordinating different functions of the body. The nervous system provides rapid, short-term coordination, while the endocrine system offers slower, long-term regulation. Therefore, the correct answer is that both the nervous system and the endocrine system are involved in coordinating body functions.

### Final Answer:
The systems which coordinate different functions of the body are the **nervous system and endocrine system**.

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