6. It was found that the astronauts in a spaceship had no difficulty in swallowing foodeven if they were upside down. Can youexplain why? Can you swallow food wheryou are upside down on earth? Explainyour answer.

6. It was found that the astronauts in a spaceship had no difficulty i

1.	6. It was found that the astronauts in a spaceship had no difficulty in swallowing foodeven if they were upside down. Can youexplain why? Can you swallow food wheryou are upside down on earth? Explainyour answer.
Answer» This wavelike motion of your muscles as they contract and relax is called peristalsis. It takes about 3 seconds for foodtobe pushed into your stomach once you chew andswallowit.SpaceFact: When you stand on your head, your mouthwillbe below your stomach so your foodwillhavetotravel up – againstgravity