Compared to the nervous system, the endocrine system:
A.
Is not essential to life.
B.
Takes only seconds.
C.
May have a longer-lasting effect.
D.
Does not use receptors.
The correct answer and Explanation is :
The correct answer is:
C. May have a longer-lasting effect.
Explanation:
The endocrine system and the nervous system are two critical systems in the human body that help regulate various functions, but they differ significantly in their methods of communication and duration of effects.
- Speed of Action:
The nervous system typically works much faster than the endocrine system. It sends electrical impulses via neurons to target cells, leading to almost immediate responses (within milliseconds to seconds). In contrast, the endocrine system releases hormones into the bloodstream, which can take longer to reach their target cells. Hormonal actions may take minutes to hours to become evident. - Duration of Effects:
The effects of the nervous system are usually short-lived and end once the stimulus stops, such as when a muscle contraction is completed or a pain signal is transmitted. However, hormones released by the endocrine system can remain active in the bloodstream for a longer period, even after the stimulus has ceased. For instance, hormones like cortisol (involved in stress response) or insulin (regulating blood sugar) have effects that can last hours to days. - Use of Receptors:
Both systems utilize receptors, but in different ways. The nervous system uses neurotransmitter receptors at synapses, while the endocrine system uses hormone-specific receptors on or inside target cells. So, option D is incorrect. - Essential to Life:
Both systems are essential to life. The endocrine system regulates critical processes such as growth, metabolism, reproduction, and stress response. Therefore, option A is incorrect.
Thus, the endocrine system’s longer-lasting effects make option C the correct answer.