During month 1, when does the heart begin to pump?

During month 1, when does the heart begin to pump?

• A. Week 6
• B. Week 12
• C. Week 2
• D. At birth

Answer: (A)

The key idea is that the heart begins working very early in development. By around week 6 of gestation, which in this course’s month-1 timeline corresponds to the end of the first month, the heart has formed and starts pumping blood to establish circulation for the growing embryo. This early heartbeat is a fundamental milestone that happens well before birth. Week 2 is too early for a pumping heart, and Week 12 or birth occur much later in development, after the heart has already begun beating.

The key idea is that the heart begins working very early in development. By around week 6 of gestation, which in this course’s month-1 timeline corresponds to the end of the first month, the heart has formed and starts pumping blood to establish circulation for the growing embryo. This early heartbeat is a fundamental milestone that happens well before birth. Week 2 is too early for a pumping heart, and Week 12 or birth occur much later in development, after the heart has already begun beating.