Science ' labeling and what they mean'

Salivary glands - The salivary glands produce saliva, which keeps the mouth and other parts of the digestive system moist. It also helps break down carbohydrates.

Oesophagus - The part of the alimentary canal which connects the throat to the stomach. In humans and other vertebrates it is a muscular tube lined with mucous membrane.

Stomach - The stomach is a muscular organ located on the left side of the upper abdomen. The stomach secretes acid and enzymes that digest food. Ridges of muscle tissue called rugger line the stomach. 

Pancreas - The pancreas produces the hormone insulin and secretes it into the bloodstream, where it regulates the body's glucose or sugar level.

Small intestine - The small intestine is the part of the intestines where 90% of the digestion and absorption of food occurs, the other 10% taking place in the stomach and large intestine. The main function of the small intestine is absorption of nutrients and minerals from food. Digestion involves two distinct parts.

Liver - The liver is a large, meaty organ that sits on the right side of the belly. The liver also detoxifies chemicals and metabolizes drugs. As it does so, the liver secretes bile that ends up back in the intestines. The liver also makes proteins important for blood clotting and other functions.

Gall Bladder - Your gallbladder is a four-inch, pear-shaped organ. It's positioned under your liver in the upper-right section of your abdomen. The gallbladder stores bile, a combination of fluids, fat, and cholesterol. Bile helps break down fat from food in your intestine. The gallbladder delivers bile into the small intestine.

Bile Duct -  The bile ducts carry bile from the liver and gallbladder through the pancreas to the duodenum, which is a part of the small intestine.

Large Intestine - The large intestine is the final section of the gastrointestinal tract that performs the vital task of absorbing water and vitamins while converting digested food into feces.

Appendix - Normally, the appendix sits in the lower right abdomen. The function of the appendix is unknown. One theory is that the appendix acts as a storehouse for good bacteria, “rebooting” the digestive system after diarrhea illnesses. 

Rectum - The rectum is a part of the lower gastrointestinal tract. The rectum is a continuation of the sigmoid colon, and connects to the anus. 

Anus - The anus is the opening where the gastrointestinal tract ends and exits the body. The anus starts at the bottom of the rectum, the last portion of the colon (large intestine). Glands release fluid into the anus to keep its surface moist.