Digestive System

The mouth, teeth, and tongue _____ food.

• chew

• stomach

Answer explanation

The mouth, teeth, and tongue are involved in the process of chewing food, which breaks it down into smaller pieces. 'Digest' refers to a later stage in the digestive process, while 'stomach' is an organ, not an action.

absorbs water into bloodstream

• large intestine

• liver

Answer explanation

The large intestine absorbs water from indigestible food, helping to form solid waste. The gall bladder stores bile, and the liver processes nutrients, but it is the large intestine that primarily absorbs water into the bloodstream.

Why do we eat?

• To get the nutrients we need to survive.

• To get carbon dioxide and oxygen.

Answer explanation

We eat primarily to obtain essential nutrients that our bodies need to function and survive. While enjoyment and weight gain can be factors, the fundamental reason is nutrient acquisition.

body system that breaks down food and absorbs nutrients

• digestive system

• mouth

Answer explanation

The digestive system is the body system responsible for breaking down food and absorbing nutrients. The mouth is part of this system, but it does not encompass the entire process, making 'digestive system' the correct choice.

Where digestion begins

• Liver

• Mouth

Answer explanation

Digestion begins in the mouth, where food is mechanically broken down by chewing and mixed with saliva for chemical digestion. This makes 'mouth' the correct answer.

Nutrients from food help the body _____ and stay healthy.

• Sick

• Grow

Answer explanation

Nutrients from food are essential for the body to grow and maintain health. They provide the necessary components for cell development, energy production, and overall bodily functions, making 'grow' the correct choice.

tube connecting the mouth to the stomach

• stomach

• esophagus

Answer explanation

The esophagus is the tube that connects the mouth to the stomach, allowing food to pass through. The stomach is the organ that receives food, and peristalsis refers to the muscle contractions that move food along the esophagus.

absorbs water

• stomach

• large intestine

Answer explanation

The large intestine is primarily responsible for absorbing water from indigestible food matter, making it the correct choice for the question about water absorption.

_____ is the part of food the body does not need.

• waste

• nutrients

Answer explanation

Waste is the part of food that the body does not need after extracting nutrients. It includes indigestible materials and byproducts that are eliminated.

Nutrients from digested food are absorbed in which digestive organ?

• Small Intestine

• Stomach

Answer explanation

Nutrients from digested food are primarily absorbed in the Small Intestine, where the majority of digestion and absorption occurs, making it the correct answer. The Stomach mainly breaks down food, while the Large Intestine absorbs water.