nutrition man

Question 1

There are _ sites of digestion in man

Answer 1

Oral cavity
Stomach
small intestine

Question 2

food is grinded by means of __ TEETH

Answer 2

molar

Question 3

Saliva is secreted by _ pair of salivary glands

Answer 3

3

Question 4

Glands of saliva

Answer 4

Sublingual gland
submaxillary gland
parotid gland

Question 5

location of these glands?

Answer 5

sublingual - below tongue
submaxillary - behind jaw
parotid - front of ears

Question 6

saliva has 3 imp ingredients called

Answer 6

1. NaHCO3
2. Water and mucus
3. Carbohydrate digesting enzyme (amylase or ptyalin)

Question 7

Fresh saliva has pH of

Answer 7

8

Question 8

saliva has pH of __ after it’s stale

Answer 8

6

Question 9

as a result of mastication food rolled up is called

Answer 9

bolus

Question 10

the glottis is __ closed by action of __ muscle

Answer 10

partially
ring

Question 11

Food is forced down the esophagus by

Answer 11

peristalsis

Question 12

hunger contractions are _ contraction

Answer 12

peristaltic

Question 13

hunger contraction are increased by __

Answer 13

low blood glucose lvl

Question 14

hunger pangs begin __ hr after the last meal

Answer 14

12-24

Question 15

the sphincter which is present at junction of stomach and esophagus is called

Answer 15

cardiac sphincter

Question 16

heart burn is called

Answer 16

pyrosis

Question 17

pyrosis is

Answer 17

back flush of stomach’s acidic chyme into esophagus

Question 18

when cardiac sphincter __ stomach closes

Answer 18

contracts

Question 19

stomach is located below __ on __ side of abdominal cavity

Answer 19

diaphragm
left

Question 20

the stomach wall has __ layers

Answer 20

1 outer layer of connective tissue
2 middle layer of smooth muscle
3 inner layer of connective tissue + glands

Question 21

inner layer of stomach is called

Answer 21

mucosa

Question 22

Gastric gland has _ kinds of cells

Answer 22

1 mucus cell
2 parietal oxyntic cell
3 zymogen cell

Question 23

Parietal and oxyntic cell secrets

Answer 23

HCl

Question 23

Gastric hormone is secreted when there’s presence of

Answer 23

protein

Question 24

Zymogen cells secrete

Answer 24

Pepsinogen

Question 25

pH of stomach HCl

Answer 25

2-3

Question 26

pepsin is secreted in it's inactive form__

Answer 26

pepsinogem

Question 27

Pepsin acts on __ to yield

Answer 27

protein, peptone or polypeptide

Question 28

pepsinogen is converted into pepsin in

Answer 28

acidic medium

Question 29

Sphincter which connects stomach with duodenum is

Answer 29

Pyloric sphincter

Question 30

The product of digestion in the stomach is called __

Answer 30

chyme

Question 31

Duodenum is about __ long,

Answer 31

20 25 cm

Question 32

When chyme passes from stomach into duodenum, its acidity stimulates the release of secretions from __ __ and __

Answer 32

Liver Pancreas Deuodenum

Question 33

Hepatic and Pancreatic secretions are also stimulated by a hormone called __

Answer 33

secretin

Question 34

__ also inhibits gastric secretion.

Answer 34

Secretin

Question 35

Carbohydrate- digesting pancreatic enzyme is

Answer 35

amylase

Question 36

fats digesting pancreatic enzyme is

Answer 36

lipase

Question 37

Trypsin is secreted in active form called

Answer 37

Trypsinogen

Question 38

trypsinogen is activated by action of

Answer 38

enterokinase

Question 39

Trypsin splits proteins into __

Answer 39

peptones and polypeptides

Question 40

trypsin functions in the__environment of the small intestine

Answer 40

alkaline

Question 41

bile may be temporarily stored in the __

Answer 41

gall bladder

Question 42

enzymes in bile

Answer 42

none

Question 43

Bile is green in colour due to the bile pigments, which are formed due to __

Answer 43

the breakdown of hemoglobin in the liver

Question 44

If bile pigments are prevented from leaving digestive tract, they may accumulate in blood, causing a condition known as __

Answer 44

jaundice

Question 45

longest part of small intestine is

Answer 45

Ileum

Question 46

jejunum is __ in length comprising about __ of the small intestine.

Answer 46

2.4 meter in length 2/5th

Question 47

Amino peptidase converts polyppt to

Answer 47

dipeptide

Question 48

erypsin converts dipeptide into

Answer 48

amino acid

Question 49

Large intestine also harbors a large population of useful bacteria that synthesize some vitamins especially ___

Answer 49

vitamin K

Question 50

Anus is surrounded by _ sphincters

Answer 50

two