Correct Option
The correct option is 1 and 3 only.
Explanation
Coordination in the human body is achieved through two main systems: the neural system and the endocrine system. These systems function together to maintain homeostasis and ensure the synchronized functioning of organs.
Statement-wise Analysis
- Statement 1 is Correct: The neural system provides an organized network of point-to-point connections for quick coordination. Nerve impulses travel rapidly along specific neurons to target cells, allowing for immediate responses to stimuli.
- Statement 2 is Incorrect: The endocrine system provides chemical integration through hormones, not electrical integration. Hormones are chemical messengers released into the blood to reach distant target organs. While the neural system relies on electrical impulses, the endocrine system relies on chemical signaling, which is generally slower but longer-lasting.
- Statement 3 is Correct: The neural and endocrine systems act jointly to regulate the physiological functions of the body. This collaboration is often referred to as the neuro-endocrine system, where neural signals can stimulate hormone release (e.g., the hypothalamus controlling the pituitary gland), ensuring comprehensive coordination.
Key Takeaway
Neural coordination is rapid, electrical, and point-to-point, whereas endocrine coordination is slower, chemical, and widespread via the bloodstream.