Final Assessment -Fundamentals of Animal Body Systems: Digestive Fundamentals of Animal Body Systems: Digestive 10 of 20 The __ is a muscular organ which continually contracts to churn food particles to make sure they are mixed Esophagus Large intestine Stomach Small intestine

## Step 1<br />The question is asking for the name of a muscular organ that continually contracts to churn food particles to ensure they are thoroughly mixed. The options provided are the esophagus, large intestine, stomach, and small intestine.<br />## Step 2<br />The esophagus is a muscular tube that transports food from the mouth to the stomach. It does not churn food particles.<br />## Step 3<br />The large intestine is responsible for absorbing water and electrolytes from the remaining indigestible food matter. It does not churn food particles.<br />## Step 4<br />The small intestine is where most of the digestion and absorption of nutrients occur. It does not churn food particles.<br />## Step 5<br />The stomach is a muscular organ that continually contracts to churn food particles to ensure they are thoroughly mixed. This process is known as peristalsis.