Flashcard on Understanding and Application

Front

How is the digestion of fats different from that of proteins and carbohydrates?

Back

Fats are absorbed into cells as fatty acids and monoglycerides but are then modified for absorption; amino acids and glucose are not modified further.

Front

Which organs play important roles in the digestive process by producing chemicals required to digest proteins, lipids, and carbohydrates?

Back

Liver and pancreas.

Front

Why is the small intestine specialized for absorption?

Back

It has an extremely large surface area that allows extended exposure to food.

Front

Why are inactive forms of some molecules secreted in the digestive system?

Back

So their activity can be regulated.

Front

Where does the bulk of chemical digestion actually occur?

Back

In the duodenum.

Front

What is the primary function of the liver in digestion?

Back

To produce bile, which helps in the digestion and absorption of fats.

Front

What role does the pancreas play in digestion?

Back

It produces digestive enzymes and bicarbonate to neutralize stomach acid.

Front

What is the significance of the villi in the small intestine?

Back

Villi increase the surface area for absorption of nutrients.

Front

How do fatty acids and monoglycerides enter the bloodstream?

Back

They are absorbed into the cells of the intestinal lining and then reassembled into triglycerides before entering the lymphatic system.

Front

What is the function of bile in digestion?

Back

Bile emulsifies fats, making them easier to digest and absorb.