Digestive system

___________ is the process of breaking down food into molecules for the body's use.

• Excretion

• Digestion

• Respiration

These are known as accessory organs which aid in the digestion process.

Check all three.

• Liver

• Pancreas

• Small intestines

• Gallbladder

What nutrients do the large intestines absorb?

• water and minerals

• vitamins

• proteins and fats

_____________ is a form of digestion that breaks the food particles into molecules using enzymes or acids.

• Mechanical digestion

• Chemical digestion

___________ is a form of digestion that occurs in the mouth when food is crushed or ground into smaller pieces.

• Chemical digestion

• Mechanical digestion

Which type of digestion breaks food into smaller pieces?

• mechanical

• chemical

The stomach releases hydrochloric acid and enzymes that break down the protein in meats and turn the protein into amino acids. This change is

• Physical
• Chemical

Tube that carries swallowed food to the stomach

• esophagus
• liver
• pancreas
• rectum

In humans, the organ that most directly regulates the concentration of water in the blood is the

• heart
• liver
• pancreas
• kidney

Which of the following is an accessory organ of the digestive system?

• stomach

• small intestine

• esophagus

• liver