Multiple Choice
Which of the following hormones are released directly by the thyroid gland?
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43. Endocrine System
Endocrine System
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Which of the following is a characteristic of the endocrine system rather than the nervous system?
A
Effects are localized to specific target cells
B
Uses hormones as chemical messengers
C
Signals are transmitted via electrical impulses
D
Produces rapid, short-lived responses
Verified step by step guidance1
Understand the question: The problem is asking to identify a characteristic unique to the endocrine system, distinguishing it from the nervous system.
Review the key features of the endocrine system: The endocrine system uses hormones as chemical messengers, which are released into the bloodstream and travel to target cells. This process is generally slower but has longer-lasting effects.
Contrast with the nervous system: The nervous system uses electrical impulses to transmit signals rapidly between neurons and target cells. Its effects are typically localized and short-lived.
Analyze the options: The first option ('Effects are localized to specific target cells') is more characteristic of the nervous system. The second option ('Uses hormones as chemical messengers') aligns with the endocrine system. The third option ('Signals are transmitted via electrical impulses') describes the nervous system. The fourth option ('Produces rapid, short-lived responses') is also a feature of the nervous system.
Conclude: Based on the analysis, the characteristic unique to the endocrine system is 'Uses hormones as chemical messengers.'
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