Digestive 1

Question 1

what are the 7 functions of the digestive system?

Answer 1

ingestion, mechanical breakdown, secretion, digestion, transportation, absorption, excretion

Question 2

what makes up the 8L of daily inflow into the GIT?

Answer 2

2L food, 1.5L saliva, 2L gastric gland secretion, 1.5 pancreativ secretion, 0.5 bile secretion, 1L buffer solution small intestine

Question 3

what is the vitelline duct?

Answer 3

a narrow tube which communicates the apex of the midgut with the yolk sac

Question 4

why does the midgut herniate into the umbilical cord during embryological development?

Answer 4

The cranial limb of foregut grows at an increasingly rapid pace and cannot fit within the abdomen, also due to the presence of ‘relatively massive liver and kidneys’

Question 5

what is Meckel’s diverticulum?

Answer 5

Remnant of the vitelline duct due to ‘nonrotation’ of the midgut, the small intestine remains on the right side of the abdominal cavity and the large intestine on the left

Question 6

what is achalasia?

Answer 6

a motor disorder of the esophagus characterized by absence of peristalsis & amp; impaired relaxation of the lower esophageal sphincter