Which of the following is a characteristic of the nervous system but not the endocrine system?

• A. The signal is broadcast throughout the body.
• B. Signals travel slowly, often taking many seconds to have an effect.
• C. Signals are often long-lasting.
• D. Signals generally coordinate gradual changes that affect the entire body.
• E. Communication usually involves more than one type of signal.

Answer: (E)

Verified step by step guidance

1. Understand the primary functions of the nervous system: The nervous system is responsible for rapid communication and response to stimuli. It uses electrical signals (nerve impulses) to transmit information quickly across the body.
2. Understand the primary functions of the endocrine system: The endocrine system uses hormones, which are chemical signals, to regulate processes in the body. These signals are typically slower and have longer-lasting effects compared to the nervous system.
3. Compare the speed of signal transmission: The nervous system transmits signals almost instantaneously through neurons, whereas the endocrine system's hormonal signals travel through the bloodstream and take longer to reach their target.
4. Consider the type of signals used: The nervous system primarily uses electrical signals, while the endocrine system uses chemical signals (hormones).
5. Identify the characteristic unique to the nervous system: The nervous system often involves multiple types of signals, such as electrical impulses and neurotransmitters, for communication, which is not a typical feature of the endocrine system.