Page 250 - Ultimate Visual Dictionary (DK)

THE HUMAN BODY

Digestive system

THE DIGESTIVE SYSTEM BREAKS DOWN FOOD into particles so tiny that blood can take nourishment
to all parts of the body. The system’s main part is a 30 ft (9 m) tube from mouth to rectum; muscles
in this alimentary canal force food along. Chewed food first travels through the esophagus to the
stomach, which churns and liquidizes food before it passes through the duodenum, jejunum, and
ileum—the three parts of the long, convoluted small intestine. Here, digestive juices from the
gallbladder and pancreas break down food particles; many filter out into the blood through tiny
fingerlike villi that line the small intestine’s inner wall. Undigested food in the colon forms feces
that leave the body through the anus.

Stomach

Cardiac notch

Esophagus

Left lobe of liver
Nasal Epiglottis Trachea
cavity
Uvula Falciform ligament
Oral
cavity Mandible
(lower jaw) Hepatic artery
Maxilla
(upper jaw) Tongue
Cystic duct
Tooth
Mouth
Right lobe of liver

Gallbladder
ENDOSCOPIC VIEWS INSIDE
ALIMENTARY CANAL

ESOPHAGUS STOMACH ENTRANCE STOMACH STOMACH EXIT

Ruga
Mucosa
Cardiac
orifice Pylorus

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