Responding to change: Control of heart rate

From Mock B · Paper 2 (topics 5–8)

5.14 marks

Explain how heart rate increases during exercise.

From Mock B · Paper 2 (topics 5–8)

5.22 marks

Explain what is meant by cardiac muscle being myogenic.

From Mock B · Paper 3 (all topics, practical skills and essay)

6.12 marks

Critical analysis (written for this paper): 20 untrained adults completed 12 weeks of endurance training. Measurements at rest before and after:

	Before	After
Heart rate / beats min⁻¹	74	62
Stroke volume / cm³	70	85
Standard deviation of heart rate	6.1	5.8

The researchers concluded that 'endurance training makes the heart more efficient'. Calculate the resting cardiac output before and after training, in dm³ min⁻¹.

From Mock B · Paper 3 (all topics, practical skills and essay)

6.23 marks

Explain the changes in heart rate and stroke volume after training.

From Mock C · Paper 2 (topics 5–8)

73 marks

Explain how a rise in blood pressure is detected and corrected.

Score 0 / 14 · 0 of 5 marked

This paper is written by Plasmo in the style of the AQA A-Level Biology exam. It is not a past paper and is not produced or endorsed by the exam board.