Stomach Development, Stuture And Funtion

Question 1

The primitive gut is recognizable by the ……?.weeks

Answer 1

The primitive gut is recognizable by the 4th wk of gestation and is composed of the foregut, midgut, and hindgut.

Question 2

Derivatives of foregut………..

Answer 2

Upper gastrointestinal tract, which includes the esophagus, stomach, and duodenum to the level of the insertion of the common bile duct.

Question 3

Derivatives of midgut…….

Answer 3

The midgut gives rise to the rest of the small bowel and the large bowel to the level of the midtransverse colon.

Question 4

Derivatives of hindgut

Answer 4

The hindgut forms the remainder of the colon and upper anal canal.

Question 5

Length of small bowel……..

Answer 5

The small bowel is approximately 270 cm long at birth in a term neonate and grows to an adult length of 450-550 cm by 4 yr of age.

Question 6

Time taken to renewal of small bowel mucosa……

Answer 6

The small bowel mucosa is completely renewed in 4-5 days

providing a mechanism for rapid repair after injury, but in young infants or malnourished children, the process may be delayed.

Question 7

Length of colon …..

Answer 7

The colon is a 75-100 cm sacculated tube formed by three strips of longitudinal muscle called taenia coli that traverse its length and fold the mucosa into haustra