Edexcel Biology Topic 7 quiz
- Created by: Ryan Martin
- Created on: 08-04-13 15:23
Other questions in this quiz
2. Which node creates the second electrical impulse in the heart?
- AVN
- SAN
- CAN
3. In the Kreb's cycle, how many times is the 5C form molecule decarboxylated and dehydrogenated?
- 5
- 3
- 2
4. Which form of nerve sends an impulse from the medulla to the SAN to increase heart rate?
- Sympathetic nerve
- Parasympathetic nerve
- Vagus nerve
5. Which part of the brain controls breathing rate?
- Medulla
- Thalamus
- Hypothalamus
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