Exercise 3. поставьте предложения в вопросительную форму. the heart circulates blood throughout the body. the heartbeats can be felt as the pulse. each chamber is divided into upper and lower compartments. the heart has stopped beating. death occurs in a few minutes. vessels returning blood to the heart are known as veins.

Does the heart circulate blood throughout the body?
Can the heartbeats be felt as the pulse?
Is each chamber divided into upper and lower compartments?
Has the heart stopped beating?
Does death occur in a few minutes?
Are vessels returning blood to the heart known as veins?