Structure & Layers
Enzymes & Digestion
Accessory Organs
Absorption & Transport
Disorders & Disruptions
100

This structure connects the mouth to the stomach.

What is the esophagus

100

This enzyme begins carbohydrate digestion in the mouth.

What is amylase

100

This organ produces bile.

What is the liver

100

Most nutrient absorption occurs in this organ.

What is the small intestine

100

This condition occurs when stomach acid flows back into the esophagus.

What is GERD

200

This innermost layer of the digestive tract is responsible for secretion and absorption.

What is the mucosa

200

This enzyme begins protein digestion in the stomach.

What is pepsin

200

This organ stores and concentrates bile.

What is the gallbladder

200

These structures increase surface area for absorption.

What are villi

200

These can block bile flow and interfere with fat digestion.

What are gallstones

300

This layer contains blood vessels and supports the mucosa.

submucosa

300

This enzyme is responsible for breaking down lipids in the small intestine.

What is lipase

300

This organ releases digestive enzymes and bicarbonate into the small intestine.

What is the pancreas

300

These microscopic structures further increase surface area on cells.

What are microvilli

300

Damage to this structure leads to decreased nutrient absorption.

What are villi

400

These two muscle layers in the digestive tract are responsible for peristalsis.

What are the circular and longitudinal muscles

400

If an enzyme’s shape is altered, it can no longer bind to its substrate. This directly affects the enzyme’s ability to perform this function.

What is catalysis (breaking down molecules/digestion)

400

This substance neutralizes stomach acid as it enters the small intestine.

What is bicarbonate

400

These transport lipids through the lymphatic system instead of directly into the blood.

What are lacteals

400

If the large intestine does not absorb water properly, this condition may occur.

What is dehydration (or diarrhea depending on how you frame it)

500

Damage to this layer would most directly reduce the movement of food through the digestive tract.

What is the muscularis (muscularis externa)

500

Without this process, lipase would be much less effective due to reduced surface area.  

What is emulsification

500

A patient lacks bile release into the small intestine. This process would be most directly affected.

What is emulsification of fats

500

If a nutrient enters the bloodstream through the lymphatic system instead of directly through capillaries, it is most likely this type of molecule.

What are lipids

500

A patient is unable to absorb nutrients due to damage in the small intestine. This would most directly disrupt this body function.  

What is homeostasis