Understanding the Digestive System

What are the main parts of the digestive system?

• Mouth, esophagus, stomach, small intestine, large intestine, rectum, anus

• Kidneys, bladder, urethra

• Heart, lungs, arteries

• Liver, pancreas, gallbladder

What is the primary function of the stomach?

• To filter blood.

• To digest food.

• To store bile.

• To absorb nutrients.

Describe the role of the small intestine in digestion.

• The small intestine has no role in nutrient absorption.

• The small intestine is mainly involved in the production of hormones.

• The small intestine is responsible for the majority of digestion and nutrient absorption.

• The small intestine primarily stores waste before excretion.

What is the function of saliva in the digestive process?

• Saliva aids in digestion by moistening food, beginning carbohydrate breakdown, and facilitating swallowing.

• Saliva acts as a lubricant for the intestines during digestion.

• Saliva is responsible for breaking down proteins in the stomach.

• Saliva primarily serves to absorb nutrients directly into the bloodstream.

Name the organ where most nutrient absorption occurs.

• pancreas

• stomach

• small intestine

• large intestine

What is the purpose of the large intestine?

• To filter toxins from the blood

• The purpose of the large intestine is to absorb water and electrolytes, compact waste, and store feces.

• To produce bile for fat digestion

• To digest food completely

Explain how food is broken down in the mouth.

• Food is broken down by heat during cooking.

• Food is broken down by enzymes in the intestines.

• Food is broken down in the mouth through chewing and saliva mixing.

• Food is broken down in the stomach through acids.

What role does the liver play in digestion?

• The liver produces bile and processes nutrients for digestion.

• The liver filters toxins from the bloodstream.

• The liver produces insulin for blood sugar regulation.

• The liver absorbs nutrients directly from the stomach.

Identify the enzyme that starts the digestion of carbohydrates.

• Salivary amylase

• Trypsin

• Lipase

• Pepsin

What is the process of moving food through the digestive tract called?

• Ingestion

• Absorption

• Peristalsis

• Digestion