GIT Physiology

Question 1

What leads to contraction

Answer 1

Acetyl choline

Question 2

Where does ductile remodification occurs

Answer 2

Ducts

Question 3

Reflux of food from stomach back to oesophagus

Answer 3

Chalasia

Question 4

The accumulation of food in the oesophagus cause

Answer 4

Achalasia

Question 5

Saliva consist of

Answer 5

Potassium and bicarbonate

Question 6

Hormone of the pancreas

Answer 6

Glucagon
Insulin
Somatotropin
Pancreatic polypeptide

Question 7

Junction between the stomach and small intestine

Answer 7

Pyloric junction

Question 8

Presence of microvilli aid

Answer 8

Digestion

Question 9

Enzymes involved in protein digestion are

Answer 9

Proteolytic enzymes

Question 10

Example of amylolytic enzymes

Answer 10

Salivary amylase and maltase

Question 11

Salivary amylase act on starch converting it to ______&______

Answer 11

Maltose and dextrin

Question 12

Which monosaccharides molecules is absorbed fast

Answer 12

Galactose

Question 13

The movement of glucose and galactose from lumen to small intestine is aided by

Answer 13

Sodium co transport using carrier protein

Question 14

The uptake or absorbtion of fructose is aided by

Answer 14

Facilitated diffusion

Question 15

__________is the basic functional unit of the liver

Answer 15

Hepatic lobule

Question 16

Blood supply to the liver is by _______&_______

Answer 16

Hepatic portal vein and hepatic artery

Question 17

The flow of blood from the intestine to the liver through the portal vein is

Answer 17

Enterohepatic circulation

Question 18

The hepatic portal triad consist of

Answer 18

A branch of hepatic artery
A branch of hepatic portal vein
Tributary of bile duct

Question 19

_________are bile transporting channel

Answer 19

Cannaliculi

Question 20

Which plasma protein is not produced in the liver

Answer 20

Gamma globulin

Question 21

_________is a lipolytic enzymes that hydrolise the triglycerides in milk fat into fatty acid and diacylglyceride

Answer 21

Lingual lipase

Question 22

Deficiency of pancreatic lipase lead to

Answer 22

Steatorrhea ( excretion of undigested fat)

Question 23

_________aid in emulsification of fat

Answer 23

Bile

Question 24

The high surface tension of fatty acid makes them

Answer 24

Insoluble in water

Question 25

Bile salt form complexes called

Answer 25

Micelle

Question 26

Bile salt are absorbed in the

Answer 26

Illeum

Question 27

Chylomicrons enter the blood stream through the

Answer 27

Thoracic duct in the neck

Question 28

Fat soluble vitamin are

Answer 28

Vitamin A D E K

Question 29

After absorbtion of iron into the blood iron combine with a protein to form

Answer 29

Apotransferin to form transferin

Question 30

Transferrin is stored in the liver as

Answer 30

Ferritin

Question 31

_________allows low resistance movement of ions from one muscle cell to the next

Answer 31

Gap junction

Question 32

Which cells act as electrical pace maker for smooth muscle

Answer 32

Interstitial cells of cajal

Question 33

The contraction of smooth muscle occurs with ----

Answer 33

Entry of calcium ion into the muscle fiber

Question 34

Muscle of the GIT exhibit

Answer 34

Toniv contraction

Question 35

3 main gland for salivary secretion

Answer 35

Parotid Sublingual Submaxillary

Question 36

_________stimulate gastric hydrochloric acid secretion

Answer 36

Histamine

Question 37

Secretion from the pancreas and liver joins together at

Answer 37

Ampulla of vater

Question 38

Parietal or oxyntic cell secrete

Answer 38

Hydrochloric acid and intrinsic factor

Question 39

Peptic or chief cells secrete

Answer 39

Pepsinogen

Question 40

Mucous neck cells secrete

Answer 40

Mucus

Question 41

Lack of the secretion of intrinsic factor causes

Answer 41

Achlorhydria (lack of stomach acid secretion) Pernicious anemia (failure of maturation of red blood cells )

Question 42

The exchange of hydrogen ion for pottasium ion in the canaliculus is catalysed by

Answer 42

H+K+ atpase

Question 43

Function of mucus

Answer 43

Lubricate food movement Protect the stomach wall from digestion by the gastric enzymes

Question 44

Function of mucus

Answer 44

Lubricate food movement Protect the stomach wall from digestion by the gastric enzymes

Question 45

___________cells secrete histamine

Answer 45

Enterochromaffin like cells