Question

The term' Peristalisis, which pumps blood towards the head in the open circulatory system of insects, also means

1. muscular conctractions that push food through the digestive system
2. air flowing into and out of the lungs
3. skeletal muscle contracting and relaxing to move a bone up and down

Answer 1

Conctractions musculaires qui poussent les aliments à travers le système

Step-by-step explanation: