The digestive system of the model has 53 parts in 6 groups. Its esophagus is 27.4 cm long, and its stomach is 13.4 cm from side to side. Tap any organ for its name, then hide it to see what lies behind.
The digestive system of the model in 6 groups
| Group | Parts | What it holds |
|---|---|---|
| Mouth and throat | 8 | The tongue, the lips, the gums and 2 pairs of salivary glands |
| Esophagus and stomach | 2 | The esophagus and the stomach |
| Small intestine | 8 | The duodenum, the jejunum and the ileum, with the mesentery |
| Large intestine | 11 | The appendix, the colon, the rectum and the 3 bands of the colon |
| Liver and bile ducts | 22 | The liver in 8 segments, the gallbladder and the bile ducts |
| Pancreas | 2 | The pancreas and its ducts |
The teeth are listed with the skeleton. The skeleton is drawn as glass, so the organs show where they sit against the ribs, the spine and the pelvis.
From the mouth to the rectum
The digestive tract is one continuous tube about 9 meters long, according to the National Cancer Institute.
| Region | What the source says | In the model |
|---|---|---|
| Mouth | A full set of permanent teeth is 32 | Tongue, lips, gums and salivary glands |
| Esophagus | A collapsible tube behind the trachea | One part, 27.4 cm long |
| Stomach | 4 regions: fundic, cardiac, body and pyloric | One part, 13.4 cm wide |
| Small intestine | 3 parts: duodenum, jejunum and ileum | Duodenum, and the jejunum and the ileum in 3 parts each |
| Large intestine | Colon, rectum and anal canal | Ascending, transverse and descending colon, rectum and appendix |
The wall of the tract has 4 layers: the mucosa, the submucosa, the muscular layer and the serosa. Three bands of muscle run the length of the colon and gather it into pouches. The model draws the 3 bands as separate parts.
The liver, the gallbladder and the pancreas
The liver is the largest gland in the body and lies under the diaphragm. The gallbladder is a pear-shaped sac that stores bile. The pancreas makes digestive enzymes, and its islets make the hormones insulin and glucagon.
In the model the liver comes in 8 segments, and the gallbladder and the bile ducts are drawn green. Tap the liver and press Hide it, and the stomach, the gallbladder and the right kidney behind it come into view.
What the model leaves out
The model has no separate cecum or sigmoid colon, no anal canal and no parotid glands. The organs are smooth outer shapes without their inner layers. They belong to one adult man, and the size and place of the organs differ from person to person.
The organs of the body view finds organs by side and by level. The kidneys behind the intestines are in the 3D urinary system, and the guide on where the liver is covers that organ alone.