An adult with a damaged sinoatrial node
A) must have a heart transplant to survive.
B) must have a pacemaker implanted to control the heart rhythm.
C) must take medication to control the heartbeat.
D) does not usually have any significant health problems.
Question 2
Which of the following can help prevent cardiovascular disease?
A) living a sedentary life
B) avoiding tobacco
C) consuming a moderate level of trans fats
D) raising LDL levels
