Question detail
How does adrenaline affect the delivery of oxygen to the brain?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Hormonal coordination in humans
Question
- A. Reduces oxygen delivery
- B. Increases oxygen delivery
- C. Has no effect on oxygen delivery
- D. Only affects oxygen delivery to muscles
Answer
The correct option is Increases oxygen delivery. This answer is correct because it matches the approved learning objective to explain (HT only) how adrenaline increases heart rate and increases oxygen and glucose delivery to the brain and muscles in the subtopic Feedback systems (HT only).
Explanation
The correct option is Increases oxygen delivery. Increases oxygen delivery is correct because it directly supports the approved learning objective to explain (HT only) how adrenaline increases heart rate and increases oxygen and glucose delivery to the brain and muscles. This belongs to the subtopic Feedback systems (HT only) within Hormonal coordination in humans, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Feedback systems (HT only).
Common mistake
Misunderstanding Adrenaline's Effects
Students often state that adrenaline only increases heart rate without mentioning its role in oxygen and glucose delivery.
Emphasize that adrenaline not only increases heart rate but also enhances the delivery of oxygen and glucose to the brain and muscles, which is crucial for the body's response to stress or fear.
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