Which of the following is not characteristic of the colon?
a. It is divided into ascending, transverse, and descending portions
b. It contains abundant bacteria, some of which synthesize certain vitamins
c. It is the main absorptive site
d. It absorbs much of the water and salts remaining in the wastes

검증된 단계별 안내

Step 1: Begin by understanding the primary functions of the colon. The colon is part of the large intestine and is primarily responsible for absorbing water and salts, compacting waste into feces, and hosting bacteria that synthesize certain vitamins like vitamin K and some B vitamins.

Step 2: Review the anatomical divisions of the colon. The colon is divided into ascending, transverse, descending, and sigmoid portions, which are structural characteristics of this organ.

Step 3: Analyze the role of bacteria in the colon. The colon contains abundant bacteria that play a role in synthesizing certain vitamins and aiding in digestion, which is a characteristic feature of the colon.

Step 4: Evaluate the absorptive function of the colon. While the colon absorbs water and salts, the small intestine is the main site for nutrient absorption, including carbohydrates, proteins, and fats. This distinction is key to answering the question.

Step 5: Compare the options provided in the question with the characteristics of the colon. Identify the option that does not align with the colon's primary functions or structure, focusing on the fact that the colon is not the main absorptive site for nutrients.

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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Anatomy of the Colon

The colon, or large intestine, is divided into several sections: the ascending, transverse, descending, and sigmoid colon. Each section plays a specific role in the digestive process, primarily in the absorption of water and electrolytes, as well as the formation of feces.

Bacterial Flora in the Colon

The colon hosts a diverse community of bacteria, known as gut microbiota, which are essential for various functions, including the synthesis of certain vitamins like vitamin K and some B vitamins. These bacteria also aid in the fermentation of undigested carbohydrates, contributing to overall gut health.

Absorptive Functions of the Colon

While the colon does absorb water and salts from waste material, it is not the primary site for nutrient absorption; that role is mainly fulfilled by the small intestine. The colon's main function is to reclaim water and electrolytes, thus concentrating waste for excretion.

Which of the following is not characteristic of the colon?a. It is divided into ascending, transverse, and descending portionsb. It contains abundant bacteria, some of which synthesize certain vitaminsc. It is the main absorptive sited. It absorbs much of the water and salts remaining in the wastes

비슷한 문제에 대한 검증된 영상 답변:

주요 개념

Anatomy of the Colon

Bacterial Flora in the Colon

Absorptive Functions of the Colon