The heart pumps blood throughout the body and the stomach helps us digest the food we eat. How do the muscles help these two organs perform their function? Both the heart and stomach continue to work on their own by contracting and shortening their muscles.

The muscles of the heart and stomach contract and relax when we tell them to do so.

The muscles of the heart and stomach contract and relax without us thinking about them.

When the muscles of the heart and stomach contract, they pull on the bones and make them move.

1. how did conditions in germany and europe at the end of world war i contribute to the rise and triumph of nazism in germany? 2. how did the german government under nazi rule build support among the german people? 3. how did nazi germany gradually isolate, segregate, impoverish, and incarcerate jews and persecute other perceived enemies of the state between 1933 and 1939? 4. how did the nazis lead germany to war in europe and, with their collaborators, kill millions—including systematically murdering six million jewish people? 5. why is learning about the holocaust important? so we don’t repeat history.