QuestionSBA
QuestionChoice
Intrinsic factor which binds to vitamin B12 is secreted from gastric parietal cells. It proceeds to form a protective complex with vitamin B12, allowing its absorption in the terminal ileum.
10004938
c
Stomach
QuestionChoice
This is incorrect as vitamin B12 is absorbed in the terminal ileum. The colon is the main site for salt, chloride and water reabsorption.
10004940
e
Colon
QuestionChoice
Jejunum is incorrect as vitamin B12 is absorbed in the terminal ileum. To 'avoid' being absorbed in the jejunum, it is coupled with intrinsic factor for protection.
10004939
d
Jejunum
QuestionChoice
Duodenum is incorrect as vitamin B12 is absorbed in the terminal ileum. To 'avoid' being absorbed in the duodenum, it is coupled up with intrinsic factor for protection.
10004937
b
Duodenum
QuestionChoice
The terminal ileum is where Vitamin B12 is absorbed. To 'avoid' being absorbed in gut structures which are 'upstream', it is coupled up with intrinsic factor for protection. Additionally, the terminal ileum has a role in bile salt absorption.
10004936
a
Terminal ileum
Concept
Chapter
2693
4349
Pernicious anaemia
Topic
136
Gastroenterology
13534
A patient attends their GP practice to ask about their pernicious anaemia which they recently got diagnosed with.

Which of the following options correctly states where in the gastrointestinal tract vitamin B12 is absorbed?
a