Podcast
Questions and Answers
Which of the following is an example of positive feedback?
Which of the following is an example of positive feedback?
- Blood clotting process accelerating until bleeding stops
- Blood vessels dilating to release excess heat when body temperature rises
- Secretion of oxytocin to stimulate uterine contractions during childbirth (correct)
- Cutaneous arteries constricting to retain warm blood when body temperature falls
Which of the following is an example of negative feedback?
Which of the following is an example of negative feedback?
- Blood clotting process accelerating until bleeding stops
- Cutaneous arteries constricting to retain warm blood when body temperature falls
- Blood vessels dilating to release excess heat when body temperature rises
- Slowing down of heart rate and dilation of blood vessels to lower blood pressure (correct)
Which of the following processes has a self-accelerating effect?
Which of the following processes has a self-accelerating effect?
- Blood clotting process accelerating until bleeding stops (correct)
- Cutaneous arteries constricting to retain warm blood when body temperature falls
- Blood vessels dilating to release excess heat when body temperature rises
- Secretion of oxytocin to stimulate uterine contractions during childbirth