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Multiple Choice
Which type of signaling is exemplified when the hormone ADH (antidiuretic hormone) travels through the bloodstream to affect target cells in the kidneys?
A
Paracrine signaling
B
Endocrine signaling
C
Synaptic signaling
D
Autocrine signaling
Verified step by step guidance
1
Understand the different types of cell signaling: Endocrine signaling involves hormones traveling through the bloodstream to distant target cells. Paracrine signaling affects nearby cells. Synaptic signaling occurs between neurons via neurotransmitters. Autocrine signaling involves a cell targeting itself.
Identify the key details in the problem: The hormone ADH (antidiuretic hormone) is mentioned as traveling through the bloodstream to affect target cells in the kidneys.
Match the description to the correct signaling type: Since ADH travels through the bloodstream to reach distant target cells, this aligns with the definition of endocrine signaling.
Eliminate incorrect options: Paracrine signaling is incorrect because it involves nearby cells. Synaptic signaling is incorrect because it involves neurons and neurotransmitters. Autocrine signaling is incorrect because it involves a cell signaling itself.
Conclude that the correct type of signaling for this scenario is endocrine signaling, as it matches the description provided in the problem.