Which is the first part of the small intestine in humans?

Duodenum

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Jejunum

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Ileum

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Caecum

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Solution

The correct option is B Duodenum
The small intestine is the part of the gastrointestinal tract between the stomach and the large intestine and is where much of the digestion and absorption of food takes place.
The small intestine is divided into three parts such as duodenum, jejunum, and ileum.
The duodenum is a first part of the small intestine continuous with the stomach and shaped like a "C".
The jejunum is the midsection of the small intestine, connecting the duodenum to the ileum.
The ileum is the final section of the small intestine.
Thus, option A is correct.

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Which of the following is the correct sequence of parts as they occur in the human alimentary canal ?

(a) Mouth $\to$ Stomach $\to$ Small intestine $\to$ Oesophagus $\to$ Large intestine
(b) Mouth $\to$ Oesophagus $\to$ Stomach $\to$ Large intestine $\to$ Small intestine
(c) Mouth $\to$ Stomach $\to$ Oesophagus $\to$ Small intestine $\to$ Large intestine
(d) Mouth $\to$ Oesophagus $\to$ Stomach $\to$ Small intestine $\to$ Large intestine

Question 4
Which is the correct sequence of parts in a human alimentary canal?

(a) $M o u t h \to s t o m a c h \to s m a l l i n t e s t i n e \to o e s o p h a g u s \to l a r g e i n t e s t i n e$
(b) $M o u t h \to o e s o p h a g u s \to s t o m a c h \to l a r g e i n t e s t i n e \to s m a l l i n t e s t i n e$
(c) $M o u t h \to s t o m a c h \to o e s o p h a g u s \to s m a l l i n t e s t i n e \to l a r g e i n t e s t i n e$
(d) $M o u t h \to o e s o p h a g u s \to s t o m a c h \to s m a l l i n t e s t i n e \to l a r g e i n t e s t i n e$

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