The diagram shows a section through the heart.
The ventricles contract and blood is forced into the arteries.
What is the state of valves 1 and 2 when this happens?
1 )
valve 1: closed / valve 2: closed
2 )
valve 1: closed / valve 2: open
valve 1: open / valve 2: closed
4 )
valve 1: open / valve 2: open
تحلیل ویدئویی تست
تحلیل ویدئویی برای این تست ثبت نشده است!
پرسش و پاسخ های مشابه
سوال کنید یا به سوالات دیگران پاسخ دهید ...