Digestive System Functions and Structures

The video tutorial provides an overview of the digestive system, explaining its purpose to break down food into simpler pieces for absorption by cells. It covers the true organs of digestion, including the mouth, esophagus, stomach, and intestines, and distinguishes between mechanical and chemical digestion. The role of accessory structures like the salivary glands, liver, and pancreas is discussed, along with additional structures such as the epiglottis and bile duct.

What is the primary purpose of the digestive system?

• To circulate blood throughout the body

• To filter waste from the blood

• To break down food into simpler pieces for absorption

• To produce hormones for growth

Which of the following is NOT a true organ of the digestive system?

• Small intestine

• Liver

• Stomach

• Esophagus

Where does mechanical digestion primarily occur?

• In the mouth

• In the large intestine

• In the small intestine

• In the stomach

What is the role of enzymes in chemical digestion?

• To store energy for later use

• To physically break down food

• To transport nutrients through the bloodstream

• To chemically break down food into smaller particles

Which structure is responsible for producing bile?

• Pancreas

• Gallbladder

• Liver

• Stomach

What is the function of the salivary glands in digestion?

• To store food

• To absorb nutrients

• To produce salivary amylase for starch digestion

• To produce bile

What is the role of the pyloric sphincter?

• To absorb water from digested food

• To store bile

• To regulate the passage of food from the stomach to the small intestine

• To prevent food from entering the trachea

Where is the duodenum located?

• Between the esophagus and stomach

• In the middle of the stomach

• At the beginning of the small intestine

• At the end of the large intestine

What is the function of the bile duct?

• To produce digestive enzymes

• To transport bile from the gallbladder to the small intestine

• To store bile

• To absorb nutrients

What separates the thoracic cavity from the digestive organs?

• The pancreas

• The stomach

• The diaphragm

• The liver