
Name three accessory digestive organs in humans.
Answer
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Hint: The food that we eat is passed through the digestive system that converts it into energy and helps us to survive. As a result, the substances undigested are removed out of the body in the form of solid waste (stool) through the bowel movement.
Complete answer:
The major organs that form the digestive system (in order of the function they perform) are the mouth, esophagus, stomach, intestine (small and large), rectum, and anus. Apart from the major organs, there are some accessory organs that facilitate the process of digestion. These accessory organs are salivary glands, pancreas, liver, and gallbladder.
Salivary glands consist of three pairs of glands namely, parotid, submandibular, and sublingual which produce saliva. However, some other small ones also secrete saliva into the oral cavity. The saliva thus produced is mixed with the food that we eat to masticate it and convert it into the bolus for easy movement throughout the digestive system. Saliva is composed of water, mucus, and the enzyme amylase. The digestion of the food starts in the oral cavity with the help of the enzyme present in the saliva.
The liver is present on the right side below the diaphragm and is the largest gland of our body. The liver is divided into four lobes, two major and two minor. The liver receives the blood which is carried in the lobules. The main function of the liver is to purify the blood. The nutrients from the digestive system are brought into the liver with the blood. It also helps in the metabolism of protein and lipids.
The gallbladder is an organ connected to the liver through a cystic duct. It is pear-like in shape and stores the bile juice which is a fluid secreted by the liver cells. This fluid is yellowish in colour and is composed of water, cholesterol, bile pigments, and bile salts. Bile salts emulsify the fats and thus help in their digestion and absorption.
Note:
Pancreas is also an accessory gland which is both exocrine and endocrine in function. The digestive enzymes are secreted by the exocrine portion into the ducts. The enzymes secreted by the pancreas are amylase, peptidase, trypsin, and lipase.
Complete answer:
The major organs that form the digestive system (in order of the function they perform) are the mouth, esophagus, stomach, intestine (small and large), rectum, and anus. Apart from the major organs, there are some accessory organs that facilitate the process of digestion. These accessory organs are salivary glands, pancreas, liver, and gallbladder.
Salivary glands consist of three pairs of glands namely, parotid, submandibular, and sublingual which produce saliva. However, some other small ones also secrete saliva into the oral cavity. The saliva thus produced is mixed with the food that we eat to masticate it and convert it into the bolus for easy movement throughout the digestive system. Saliva is composed of water, mucus, and the enzyme amylase. The digestion of the food starts in the oral cavity with the help of the enzyme present in the saliva.
The liver is present on the right side below the diaphragm and is the largest gland of our body. The liver is divided into four lobes, two major and two minor. The liver receives the blood which is carried in the lobules. The main function of the liver is to purify the blood. The nutrients from the digestive system are brought into the liver with the blood. It also helps in the metabolism of protein and lipids.
The gallbladder is an organ connected to the liver through a cystic duct. It is pear-like in shape and stores the bile juice which is a fluid secreted by the liver cells. This fluid is yellowish in colour and is composed of water, cholesterol, bile pigments, and bile salts. Bile salts emulsify the fats and thus help in their digestion and absorption.
Note:
Pancreas is also an accessory gland which is both exocrine and endocrine in function. The digestive enzymes are secreted by the exocrine portion into the ducts. The enzymes secreted by the pancreas are amylase, peptidase, trypsin, and lipase.
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