Anatomy
Secretions and Enzymes
Accessory Organs
Pathologies
Definitions
100

This is the innermost layer of the gastrointestinal tract, consisting of a mucous membrane.

Mucosa

100

Secreted by chief cells in the stomach, this enzyme is responsible for breaking down proteins.

Pepsin

100

This organ, located inferior to the diaphragm, is the largest internal organ in the body.

Liver

100

This condition involves chronic inflammation of the digestive tract and commonly features lymphatic tissue changes in the ileum.

Crohn disease

100

This branch of medicine is dedicated to the study of the digestive system and its disorders.

Gastroenterology

200

This ring of smooth muscle sits between the esophagus and the stomach to prevent backflow.

Lower Esophageal Sphincter (LES)

200

Produced by parietal cells, this factor is necessary for the absorption of Vitamin B12.

Intrinsic factor

200

This pear-shaped sac stores and concentrates bile, but does not actually produce it.

Gallbladder

200

This pathology involves gastric juices flowing backward past the lower esophageal sphincter.

GERD

200

This term describes the small, round mass of chewed food mixed with saliva prior to swallowing.

Bolus

300

This section of the small intestine is where approximately 90% of all absorption takes place.

Small intestine

300

Secreted by the pancreas, these chemicals neutralize acidic chyme as it enters the duodenum from the stomach.

Bicarbonates

300

These specific pancreatic cells are responsible for secreting digestive enzymes into the pancreatic duct.

Acini cells

300

Open sores that develop on the lining of the stomach or duodenum are known as this.

Peptic Ulcer Disease (Ulcers)

300

The medical term for the act of swallowing.

Deglutition 

400

These thick, longitudinal muscle bands on the large intestine resemble thread-gathering fabric.

Taeniae coli

400

This hormone stimulates the gallbladder to contract and triggers the release of pancreatic secretions.

Cholecystokinin

400

This duct system transports blood from the GI tract, spleen, gallbladder, and pancreas directly to the liver.

Hepatic portal system

400

Chronic liver damage leading to scarring and liver failure is known by this pathology term.

Cirrhosis

400

The rhythmic, wavelike muscular contractions that push food through the GI tract.

Peristalsis

500

This anatomical space located behind the peritoneum contains organs like the pancreas, kidneys, and parts of the intestines.

Retroperitoneal space

500

This enzyme found in saliva begins the breakdown of carbohydrates in the oral cavity.

Salivary amylase (ptyalin)

500

Bile emulsifies fats by dispersing large globules into smaller droplets so this pancreatic enzyme can work more efficiently.

Pancreatic lipase

500

Hardened deposits of digestive fluid that form in the gallbladder are called this.

Gallstones

500

The branch of the nervous system known as "rest and digest," which oversees digestion during low activity.

Parasympathetic division