Experiment: Mice were injected with adrenaline and their blood pressure was measured every 10 minutes for an hour.Observation: Blood pressure spiked within 10 minutes and gradually normalized.Question: What physiological effect does adrenaline have?
Correct answer: B. Adrenaline causes a temporary increase in blood pressure.
- A. Adrenaline permanently lowers blood pressure.
- B. Adrenaline causes a temporary increase in blood pressure.
- C. Adrenaline has no cardiovascular effect.
- D. Adrenaline slows down the heart rate.
Explanation
The correct answer is Option B: Adrenaline causes a temporary increase in blood pressure. This is supported by the observation in the experiment where blood pressure spiked within 10 minutes of adrenaline injection and then gradually returned to normal levels. Option A is incorrect as the experiment did not show a permanent lowering of blood pressure. Option C is incorrect because the experiment clearly demonstrated a cardiovascular effect of adrenaline. Option D is incorrect as the experiment did not measure the heart rate but focused on blood pressure changes.
Last updated
Related questions
48 competitors entered the men's 100 metres freestyle event at this year's Muscan Swimming Championships. They were divided randomly into 6 heats, with the fastest 16 qualifying for the semi-finals.These are the results of the 6 heats.From which heat was there only one qualifier for the semi-finals?
A ballet dancer of mass 80 kg and a wingspan of 1m is executing a spin. She then folds her arms and brings them to within 20cm from the central axis of her body. If she was initially making 3 rotations per second, how many does she make now?
A ballet dancer of mass 80 kg and a wingspan of 80cm is executing a spin. She then folds her arms and brings them to within 20 cm from the central axis of her body. If she was initially making 3 rotations per second, how many does she make now?
A bar magnet and a solenoid are kept beside each other. In which of the following cases current will not be produced?
A bar magnet and a solenoid are kept beside each other. In which of the following cases current will not be produced?