Following Digestion of a Meal - Section 35.1

The video tutorial covers section 35.1, focusing on the digestive system. It explains the journey of food from ingestion to elimination, detailing the roles of the mouth, esophagus, stomach, small intestine, and large intestine. Key processes like peristalsis, enzyme action, and nutrient absorption are discussed. The tutorial also highlights the importance of the digestive system in breaking down food for energy.

What is the primary function of the digestive system?

• To produce hormones

• To store food

• To circulate blood

• To break down food for energy

Which of the following is the first step in the digestion process?

• Ingestion

• Absorption

• Digestion

• Elimination

What is the role of saliva in the mouth?

• To absorb nutrients

• To eliminate waste

• To store food

• To chemically break down starch

What type of muscle is found in the esophagus?

• Voluntary muscle

• Skeletal muscle

• Smooth muscle

• Cardiac muscle

What protects the stomach lining from being digested by hydrochloric acid?

• Pepsin

• Bile

• Mucus

• Saliva

What is the function of the enzyme pepsin in the stomach?

• To break down carbohydrates

• To neutralize acids

• To break down proteins

• To store bile

What is the first section of the small intestine called?

• Jejunum

• Ileum

• Colon

• Duodenum

Which organ produces bile?

• Liver

• Stomach

• Gallbladder

• Pancreas

What is the primary function of the large intestine?

• To digest proteins

• To produce enzymes

• To break down fats

• To absorb water

How long does food typically remain in the large intestine?

• 24 to 33 hours

• 18 to 24 hours

• 3 to 5 hours

• 2 to 4 hours