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What is the primary function of the mouth in the digestive system?

• To absorb nutrients directly into the bloodstream.

• To break down food into smaller pieces and mix it with saliva.

• To store food before it enters the stomach.

• To produce digestive enzymes for the entire system.

Approximately how much saliva does a human produce in a year?

• Enough to fill half a bathtub.

• Enough to fill two bathtubs.

• Enough to fill a small glass.

• Enough to fill a swimming pool.

Apakah Anda menikmati pelajaran video tersebut?

• Ya

• Tidak

What is the name of the tube that food correctly travels down after leaving the pharynx?

• Trachea

• Windpipe

• Lungs

• Esophagus

What is the wave-like muscle contraction that moves food through the esophagus called?

• Digestion

• Absorption

• Peristalsis

• Mastication