Anatomy_of_Digestive_system

Digestive System

A system responsible for the digestion of food, which includes the alimentary canal and accessory organs.

Peritoneum

Serous membranes of the abdominal cavity, consisting of visceral and parietal layers.

Alimentary Canal

Continuous muscular tube running from the mouth to the anus, consisting of the digestive tract.

Mucosa

The innermost layer of the digestive tract, which includes the epithelium, lamina propria, and muscularis mucosae.

Submucosa

Layer of connective tissue in the digestive tract that contains blood vessels, nerves, and lymphatics.

Muscularis Externa

Layer of the digestive tract responsible for peristalsis, consisting of circular and longitudinal muscle layers.

Serosa

The outermost layer of the digestive tract, consisting of connective tissue and mesothelium.

Salivary Glands

Glands that produce saliva, including the parotid, submandibular, and sublingual glands.

Teeth

Hard structures used in the mechanical process of digestion, categorized into incisors, canines, and molars.

Esophagus

A flat muscular tube that transports food from the pharynx to the stomach.

Gastroesophageal Sphincter

Muscle that surrounds the opening between the esophagus and the stomach, preventing backflow of stomach contents.

Small Intestine

Major site for digestion and absorption, divided into the duodenum, jejunum, and ileum.

Villi

Fingerlike projections of the intestinal mucosa that maximize absorption in the small intestine.

Large Intestine

Organ responsible for absorbing water and forming feces, including the cecum, colon, rectum, and anus.

Hepatic Portal Vein

Vein that carries blood from the digestive organs to the liver for filtration.

Pancreas

Accessory digestive organ that produces enzymes and bicarbonate for digestion.

Liver

Largest gland in the body, responsible for detoxification, substance metabolism, and bile production.

Gallbladder

Muscular sac that stores and concentrates bile.

Intrinsic Fact

A substance produced by parietal cells of the stomach, essential for vitamin B12 absorption.

Gastric Glands

Glands in the stomach that secrete gastric juices including pepsinogen and hydrochloric acid.