plz answer this question plz
Attachments:
Answers
Answered by
0
Answer:
a-true,b-false ,c-true, d- A heartbeat is a two-part pumping action that takes about a second. As blood collects in the upper chambers (the right and left atria), the heart's natural pacemaker (the SA node) sends out an electrical signal that causes the atria to contract.,e-true ,f- false ,g-true
Similar questions
Chemistry,
3 hours ago
Computer Science,
3 hours ago
English,
6 hours ago
Computer Science,
7 months ago
English,
7 months ago