Body coordination is maintained by :
(1) Endocrine system
(2) Circulatory system
(3) Nervous system
(4) Cartilagenous joints

Options

A. 1,2 and 3 are correct
B. 1 and 2 are correct
C. 2 and 4 are correct
D. 1 and 3 are correct

Answer

To determine which systems maintain body coordination, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding Body Coordination**:
- Body coordination refers to the ability to execute smooth, accurate, and controlled motor responses. It involves the integration of various physiological systems to ensure that the body responds appropriately to stimuli.

2. **Evaluating the Endocrine System**:
- The endocrine system is responsible for producing hormones that act as chemical messengers in the body. These hormones regulate various functions, including metabolism, growth, development, mood, and even sleep.
- **Conclusion**: The endocrine system plays a role in body coordination.

3. **Evaluating the Circulatory System**:
- The circulatory system is primarily responsible for transporting blood, nutrients, gases, and waste products throughout the body. While it is essential for overall health, it does not directly coordinate body functions.
- **Conclusion**: The circulatory system does not maintain body coordination.

4. **Evaluating the Nervous System**:
- The nervous system is crucial for body coordination as it controls behavior, thoughts, and actions. It allows for rapid communication between different parts of the body, enabling quick responses to stimuli.
- **Conclusion**: The nervous system is a key player in maintaining body coordination.

5. **Evaluating Cartilaginous Joints**:
- Cartilaginous joints provide flexibility and support for movement but do not play a role in coordinating body functions. They are involved in locomotion rather than coordination.
- **Conclusion**: Cartilaginous joints do not maintain body coordination.

6. **Final Assessment**:
- Based on the evaluations, the systems that maintain body coordination are the **endocrine system** and the **nervous system**. The circulatory system and cartilaginous joints do not contribute to coordination.

### Answer:
The correct options that maintain body coordination are:
- (1) Endocrine system
- (3) Nervous system