The heart pumps blood by ____. It does this in ____ stages. First the ____ contract. Then, about a tenth of a second later, the ventricles contract. 1. When the heart is relaxed, both sides are filled with blood from the ____. 2. The atria contract. The veins contract where they join the atria, so blood from the atria is forced into the ____. 3. Then the ventricles contract. The valves between the ventricles and atria close. The blood is forced out of the heart and into the ____.
0%
How the heart pumps blood
共享
由
Moesvg6macmillan
MOESVG
Form 3-5
CSEC
Grades 5-6
Primary
Secondary
Body Systems
PE
Science
Structure and Function
VC012
VC023
编辑内容
打印
嵌入
更多
作业
排行榜
显示更多
显示更少
此排行榜当前是私人享有。单击
,共享
使其公开。
资源所有者已禁用此排行榜。
此排行榜被禁用,因为您的选择与资源所有者不同。
还原选项
完成句子
是一个开放式模板。它不会为排行榜生成分数。
需要登录
视觉风格
字体
需要订阅
选项
切换模板
显示所有
播放活动时将显示更多格式。
打开成绩
复制链接
QR 代码
删除
恢复自动保存:
?