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In the human digestive system, digestion...

In the human digestive system, digestion occurs in
(a) buccal cavity
(b) stomach
( c) small intestine
(d) large intestine
Chose the correct option from the following

A

(a) only

B

(a) and (b) only

C

(b), ( c) and (d) only

D

(a), (b) and ( c) only

Text Solution

AI Generated Solution

The correct Answer is:
To determine where digestion occurs in the human digestive system, we will analyze each option provided in the question: 1. **Buccal Cavity**: - The buccal cavity, also known as the oral cavity, is where the process of digestion begins. - Saliva, which contains the enzyme salivary amylase, is secreted by salivary glands. - Salivary amylase helps in the hydrolysis of starch, converting it into maltose. - Therefore, digestion does occur in the buccal cavity. 2. **Stomach**: - The stomach is another important site for digestion. - It contains various cells, including chief cells that secrete gastric juices, which contain enzymes and acids that aid in the digestion of proteins. - Thus, digestion also occurs in the stomach. 3. **Small Intestine**: - The small intestine is crucial for digestion and is where the majority of digestion and nutrient absorption takes place. - Enzymes from the pancreas and bile from the liver further break down food. - Complete digestion occurs in the small intestine. 4. **Large Intestine**: - The large intestine does not play a significant role in digestion. - Its primary function is the absorption of water and electrolytes, and it prepares waste for elimination. - Therefore, digestion does not occur in the large intestine. Based on this analysis, digestion occurs in the buccal cavity, stomach, and small intestine. The large intestine does not participate in the digestive process. **Correct Answer**: (a) buccal cavity, (b) stomach, (c) small intestine. The best option that includes all the correct answers is option (4), which states that digestion occurs in the buccal cavity, stomach, and small intestine.
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