This is a example of........ 

• organ system
• cells
• organ
• tissue

Which organ is the first part of the digestive system where food enters?

• Stomach

• Mouth

• Small intestine

• Esophagus

What is the main function of enzymes in the digestive system?

• Absorb nutrients

• Break down food molecules

• Store food

• Move food through the body

Which system includes the mouth, esophagus, and the small and large intestines?

• nervous
• excretory
• respiratory
• digestive

Which of the following is an example of mechanical digestion?

• Saliva breaking down starch

• Chewing food with teeth

• Enzymes breaking down proteins

• Acid dissolving food in the stomach

Where does most nutrient absorption occur in the digestive system?

• Mouth

• Stomach

• Small intestine

• Large intestine

What is the main role of the stomach in chemical digestion?

• Absorbing water

• Producing bile

• Breaking down proteins with acid and enzymes

• Moving food to the mouth

Which of the following best describes mechanical digestion?

• The use of acids to dissolve food

• The physical breakdown of food into smaller pieces

• The absorption of nutrients into the blood

• The release of hormones

What is the function of the esophagus in the digestive system?

• Absorbing nutrients

• Producing digestive enzymes

• Transporting food from the mouth to the stomach

• Storing waste

What is an example of chemical breakdown?

• Chewing
• Saliva
• Peristalsis