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Elite Brainiacs > GIT Physiology > Flashcards

GIT Physiology Flashcards

1
Q

What leads to contraction

A

Acetyl choline

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2
Q

Where does ductile remodification occurs

A

Ducts

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3
Q

Reflux of food from stomach back to oesophagus

A

Chalasia

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4
Q

The accumulation of food in the oesophagus cause

A

Achalasia

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5
Q

Saliva consist of

A

Potassium and bicarbonate

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6
Q

Hormone of the pancreas

A

Glucagon
Insulin
Somatotropin
Pancreatic polypeptide

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7
Q

Junction between the stomach and small intestine

A

Pyloric junction

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8
Q

Presence of microvilli aid

A

Digestion

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9
Q

Enzymes involved in protein digestion are

A

Proteolytic enzymes

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10
Q

Example of amylolytic enzymes

A

Salivary amylase and maltase

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11
Q

Salivary amylase act on starch converting it to ______&______

A

Maltose and dextrin

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12
Q

Which monosaccharides molecules is absorbed fast

A

Galactose

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13
Q

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

A

Sodium co transport using carrier protein

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14
Q

The uptake or absorbtion of fructose is aided by

A

Facilitated diffusion

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15
Q

__________is the basic functional unit of the liver

A

Hepatic lobule

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16
Q

Blood supply to the liver is by _______&_______

A

Hepatic portal vein and hepatic artery

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17
Q

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

A

Enterohepatic circulation

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18
Q

The hepatic portal triad consist of

A

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

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19
Q

_________are bile transporting channel

A

Cannaliculi

20
Q

Which plasma protein is not produced in the liver

A

Gamma globulin

21
Q

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

A

Lingual lipase

22
Q

Deficiency of pancreatic lipase lead to

A

Steatorrhea ( excretion of undigested fat)

23
Q

_________aid in emulsification of fat

A

Bile

24
Q

The high surface tension of fatty acid makes them

A

Insoluble in water

25
Q

Bile salt form complexes called

A

Micelle

26
Q

Bile salt are absorbed in the

A

Illeum

27
Q

Chylomicrons enter the blood stream through the

A

Thoracic duct in the neck

28
Q

Fat soluble vitamin are

A

Vitamin A D E K

29
Q

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

A

Apotransferin to form transferin

30
Q

Transferrin is stored in the liver as

A

Ferritin

31
Q

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

A

Gap junction

32
Q

Which cells act as electrical pace maker for smooth muscle

A

Interstitial cells of cajal

33
Q

The contraction of smooth muscle occurs with —-

A

Entry of calcium ion into the muscle fiber

34
Q

Muscle of the GIT exhibit

A

Toniv contraction

35
Q

3 main gland for salivary secretion

A

Parotid
Sublingual
Submaxillary

36
Q

_________stimulate gastric hydrochloric acid secretion

A

Histamine

37
Q

Secretion from the pancreas and liver joins together at

A

Ampulla of vater

38
Q

Parietal or oxyntic cell secrete

A

Hydrochloric acid and intrinsic factor

39
Q

Peptic or chief cells secrete

A

Pepsinogen

40
Q

Mucous neck cells secrete

A

Mucus

41
Q

Lack of the secretion of intrinsic factor causes

A

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

42
Q

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

A

H+K+ atpase

43
Q

Function of mucus

A

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

44
Q

Function of mucus

A

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

45
Q

___________cells secrete histamine

A

Enterochromaffin like cells

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