Paper 1, Oct Nov 2007 | Cambridge AS - A Level Biology (9700) Past Papers
CIE
AS & A Level
Biology (9700)
بهمن
2007
مشاهده نمونه سوال
شامل مباحث:
AS Level
تعداد سوالات: 40
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
60 دقیقه

پیش نمایش صفحه اول فایل
The following tissues carry an electrical impulse during the cardiac cycle.
1) atrioventricular node
2) muscle wall of atria
3) Purkyne tissue
4) sinoatrial node
In what order does the electrical impulse travel during the cardiac cycle?