Explain the digestive system? 5marks
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1. Complex components of food such as carbohydrates are broken down into simpler substances and are then utilized by the body. 2. This process of breaking down of complex substances into simpler substances is known as digestion.The human digestive system consists of a number of organs, each performing a different function.
3. In the digestive system, food first enters the buccal cavity. The buccal cavity consists of teeth and the tongue. Apart from the tongue and the teeth, the buccal cavity also has salivary glands, which secrete saliva. The enzymes present in saliva breakdown the fats or digest the starch present in the food we eat. 4.The swallowed food passes into the oesophagus from the mouth. The oesophagus or the food pipe runs along the neck and chest. The walls of the food pipe move to push the food down into the stomach. After the food pipe, the food enters the stomach. The stomach is a thin-walled bag. It is flattened, U-shaped, and is the widest part of the alimentary canal. It opens into the small intestine. The inner lining of the stomach secretes hydrochloric acid, mucous, and digestive juices. The mucus secreted by the stomach protects the inner lining of the stomach.
5. The hydrochloric acid secreted by the stomach kills the bacteria that enter the stomach through food. It also makes the medium of the stomach acidic
6. The remaining waste material then enters the rectum. It is stored there in the form of semi-solid faeces. The faecal material is finally removed from the body through the anus. This process is known as egestion.I hope the answer was helpful to you If it was please mark it as brainlist ❤️
3. In the digestive system, food first enters the buccal cavity. The buccal cavity consists of teeth and the tongue. Apart from the tongue and the teeth, the buccal cavity also has salivary glands, which secrete saliva. The enzymes present in saliva breakdown the fats or digest the starch present in the food we eat. 4.The swallowed food passes into the oesophagus from the mouth. The oesophagus or the food pipe runs along the neck and chest. The walls of the food pipe move to push the food down into the stomach. After the food pipe, the food enters the stomach. The stomach is a thin-walled bag. It is flattened, U-shaped, and is the widest part of the alimentary canal. It opens into the small intestine. The inner lining of the stomach secretes hydrochloric acid, mucous, and digestive juices. The mucus secreted by the stomach protects the inner lining of the stomach.
5. The hydrochloric acid secreted by the stomach kills the bacteria that enter the stomach through food. It also makes the medium of the stomach acidic
6. The remaining waste material then enters the rectum. It is stored there in the form of semi-solid faeces. The faecal material is finally removed from the body through the anus. This process is known as egestion.I hope the answer was helpful to you If it was please mark it as brainlist ❤️
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the human digestion starts as we put food in our mouth. human digestive system consists of small intestine. small intestine has 3 tabular gland that releases enzyme hcl , pepsin and mucus which helps in digestion of food
hcl make the medium acidic . pepsine breaks protien and mucus protects the wall of stomach.
further in small intestine bile secrets bile juce . which further digests , breaks , and absorbs the nutrients of food .
digested food in given out as excretion.
please mark brainlist
hcl make the medium acidic . pepsine breaks protien and mucus protects the wall of stomach.
further in small intestine bile secrets bile juce . which further digests , breaks , and absorbs the nutrients of food .
digested food in given out as excretion.
please mark brainlist
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