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Embossed teaching model human body digestion system human anatomy esophagus. 中文版

Embossed teaching model human body digestion system human anatomy esophagus.

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Updated: 2021-03-05 11:21
About Product:Show: nose, mouth and throat, esophagus, gastrointestinal tract, liver and gallbladder, spleen and pancreas, duodenum, cecum and rectum.

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Qinghua science instruments 12yr.
Main Products:	Human model human organ model animal plant specimen model human skeleton teaching equipment biological model
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The digestive system.The digestive tractandDigestive glandTwo parts.digestionRoad: including oral, pharynx, esophagus, stomach, small intestine (duodenum,jejunum,The ileum) and the large intestine (cecum, appendix,The colon,The rectum,Anal canal), etc. The oral cavity to the duodenum is often referred to as the upper gastrointestinal tract, and the lower part of the jejunum is called the lower digestive tract. The digestive gland has small digestive glands and.The digestive glandTwo kinds. The small digestive gland is scattered in the tube wall of each part of the digestive tube, and the large digestive gland has three pairs of salivary glands (Parotid gland,The submandibular gland,Sublingual gland), liver and pancreas. The digestive system is one of the eight systems in the body.

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