Digestive System

Question 1

Mechanical digestion begins in

Answer 1

Mouth
Grinding cutting tearing action of teeth

Question 2

Mammals chew. Reptiles and fish

Answer 2

Tear and gulp only

Question 3

Human have. Tooth

Answer 3

32

Question 4

4 groups of 8 teeth which have

Answer 4

2 incisors
1 canine
2 premolar
3 molar

Question 5

Each tooth had main two divisions

Answer 5

Crown and root

Question 6

Has layer of extremely hard enamel covering bone like layer of dentin

Answer 6

The crown

Question 7

Form when bacteria growing on teeth release acid during the break down of sugar

Answer 7

Dental caries or cavity

Question 8

Chemical digestion begin in

Answer 8

Mouth

Question 9

The enzyme —— begins the digestion of starch by breaking down into disaccharide maltose

Answer 9

Salivary amylase

Question 10

Three pairs of salivary glands

Answer 10

Patroid
Accessory
Sublingual gland

Question 11

Swallowed food moves through digestive system by involuntary waves of smooth muscle contraction called

Answer 11

Peristalsis

Question 12

Stores food and acids in digestion

Answer 12

Stomach

Question 13

Produce gastric juice which contains the protein digesting enzyme pepsin , hcl , mucus

Answer 13

Gastric gland

Question 14

The —. Reduces the stomach ph about 2 which kills most bacteria present in food and helps break down the connective tissue of meat

Answer 14

HCL

Question 15

The wall of stomach is protected by a thick layer of

Answer 15

Mucus

Question 16

After 2-6 hours in stomach the food turned into a liquid

Answer 16

Chyme which is released into the first part of small intestine duodenum

Question 17

The stomach has two ring of muscles that prevent the contents of stomach from leaving too soon or escaping back up

Answer 17

Sphincters

Question 18

The valve at the top of stomach

Answer 18

Cardiac sphincter

Question 19

The valve at the bottom of stomach

Answer 19

Pyloric sphincter

Question 20

If acid does splash up into lower esophagus through cardiac sphincter

Answer 20

A condition Acid reflux sensation called heartburn

Question 21

Small intestine averages about

Answer 21

6 m or 18 ft

Question 22

The first 25 com of small intestine

Answer 22

Duodenum

Question 23

Duodenum

Answer 23

Receives the chyme from the stomach along with digestive enzyme and sodium carbonate from pancreas and bile from gall bladder

Question 24

Emulsifies the fat to allow the fat digesting enzyme lipase from pancreas

Answer 24

The bile

Question 25

Helps neutralize the acidic stomach contents raising the ph of duodenum to about 8

Answer 25

Sodium bicarbonate

Question 26

The main function of small intestine

Answer 26

Digestion and absorption

Question 27

Small intestine produce maltase enzyme to finish the digestion of starch into

Answer 27

Maltose that begun in mouth and continued in duodenum

Question 28

Small intestine also produce

Answer 28

Peptides and nucleotides to complete the digestion of protein and nucleic acids respectively

Question 29

The fold of small intestine are lined finger like projections that increase the surface are

Answer 29

Villi Have microscopic extension called microvilli

Question 30

Sugars and amino are absorbed through the

Answer 30

Columnar epithelial cells that lines with villi and enter the blood capillaries

Question 31

Absorbed nutrients in small intestine the head to

Answer 31

Liver via hepatic portal vein

Question 32

The liver acts as

Answer 32

Gatekeeper as it removes poisonous substances froom blood and detoxifies them

Question 33

The liver also stores excess sugar as

Answer 33

Glycogen and removes and stores iron and fat soluble nutrents A D E K B12

Question 34

The liver also produces the yellow greenish which is stored in gallbladder

Answer 34

Bile

Question 35

The leftover materials after absorption has extracted all nutrients from the intestinal contents called

Answer 35

Feces and make its way to large intestine

Question 36

The large intestine shorter in length about

Answer 36

1.5 m or 5 ft

Question 37

The primary role of the large intestine is

Answer 37

Absorption of copious amounts of water used in the digestive process

Question 38

Large intestine also absorbs

Answer 38

Vitamins produced by the bacteria that inhibit it

Question 39

Feces are

Answer 39

75%water and 25%solid material

Question 40

Results from feces moving too quickly through large intestine which does not not allow enough water to absorbed

Answer 40

Diarrhea

Question 41

Results from feces moving too slowly through the large intestine allowing too much water to be absorbed

Answer 41

Constipation

Question 42

Liver functions

Answer 42

Detoxifies blood. 2. Stores iron and the fat soluble vitamins (A,D,E & K) 3. Makes plasma proteins such as albumins and fibrinogen. 4. Stores glucose as glycogen to maintain blood glucose levels. 5. Produces urea after breaking down amino acids. 6. Produces bile. 7. Helps regulate blood cholesterol levels.

Question 43

Both exocrine and endocrine gland . Secretes insulin and glucagon which help bookd glucose level

Answer 43

Pancreas

Question 44

Pancreas as an exocrine gland it produce

Answer 44

Pancreatic juice which contains sodium bicarbonate and the enzymes pancreatic amylase trypsin nuclease and lipase

Question 45

Mumps a viral infection of

Answer 45

Parotid gland

Question 46

Gastric juice

Answer 46

Hcl + pepsin

Question 47

Pancreatic juice

Answer 47

Antacid and enzyme