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Question: Answered & Verified by Expert
Adrenalin directly affects:
BiologyChemical Coordination and IntegrationNEETNEET 2002
Options:
  • A SA node
  • B $\beta$ cells of Langerhans
  • C dorsal root of spinal cord
  • D epithelial cells of stomach
Solution:
1195 Upvotes Verified Answer
The correct answer is: SA node
Adrenaline prepares the body for emergency reactions like fight and flight. Therefore, it directly affects the SA node to increase the rate of heart beat.
Related Theory
Adrenaline is a hormone released from the adrenal glands and together with noradrenaline, is to prepare the body for 'fight or flight'.

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