Which statement describes the condition of the heart at the point indicated in the electrocardiogram?

a. the atria are contracting and pushing blood into the bottom ventricles of the heart.

b. the ventricles are contracting and pushing blood out of the heart to the lungs and body.

c. the valves between the atria and ventricles close, producing the first heartbeat.

d. the valves of the aorta and pulmonary artery close, producing the first heartbeat.

A or B

i think not a 100% sure

A. The atria are contracting and pushing blood into the bottom ventricles of the heart.

my hamster died and my second hamster i got after that one died as well. i also lost two birds named rainbow and kiwi, (they didn't die, they flew off and escaped). i lost a cat named omi, and a dog named snoopie. the best way i got over it is, paying my respects, and just thinking that they were in a happy place. as well as just remembering but not thinking about it all the time, just do fun activities and try not to think about it too much. hope you feel better. i'm sorry about your loss. : (

with out the ancient ppl we wouldnt have medicine beacuse they taught us.