Human Digestive System Functions

The video explains the human digestive system, detailing the journey of food from the mouth to the large intestines. It covers mechanical and chemical digestion in the mouth, the role of the esophagus, the stomach's function in breaking down food with acids and enzymes, nutrient absorption in the small intestines, and the large intestines' role in water absorption and waste elimination. The importance of bacteria in the large intestines is also highlighted.

What is the approximate length of the human digestive system?

• 40 feet

• 30 feet

• 20 feet

• 10 feet

Which enzyme in saliva begins the digestion of starches?

• Trypsin

• Pepsin

• Amylase

• Lipase

What is the function of the epiglottis during swallowing?

• To absorb nutrients

• To break down proteins

• To cover the trachea

• To secrete saliva

What is the primary role of the stomach in digestion?

• Storing bile

• Producing insulin

• Breaking down proteins

• Absorbing nutrients

Which section of the stomach connects to the small intestines?

• Fundus

• Pylorus

• Cardia

• Body

What is the primary function of the small intestines?

• To absorb nutrients

• To produce bile

• To secrete saliva

• To store food

Which enzyme is responsible for digesting fats in the small intestines?

• Trypsin

• Pepsin

• Lipase

• Amylase

What is the main role of the large intestines?

• To absorb water and salts

• To break down carbohydrates

• To digest proteins

• To produce saliva

Which vitamin is produced by bacteria in the large intestines?

• Vitamin A

• Vitamin D

• Vitamin C

• Vitamin K

What is the name of the section where digested food first enters the large intestines?

• Sigmoid

• Cecum

• Descending colon

• Transverse colon