digestive system

Question 1

what is ingestion

Answer 1

is the intake of substances such as food and drinks into the body through the mouth

Question 2

what is digestion

Answer 2

the breakdown of large,insoluble food molecules into small water soluble molecules using mechanical and chemical process

Question 3

mechanical digestion

Answer 3

is the breaking down of large peices into smaller pieces to increase the surface ara for faster action of enzymes

Question 4

chemical digestion

Answer 4

is the breakdown of large insoluble molecules into small soluble molecules using enzymes

Question 5

absorption

Answer 5

the movment of small food molecules and ions through the wwall of the intestine into blood

Question 6

assimilation

Answer 6

the movement of digested food molecules into the cells of the body where they are used

Question 7

egestion

Answer 7

the passing out of food that has not been digested or absorbed through the anus

Question 8

adaption of the villi

Answer 8

their wallls very thin for faster absorption
numerous increasing surfuce area for faster absorption
microvilli for more surface area for faster absorption
large network of blood cappilllieries to maintain concentration gradient
lacteal vessel for absorption of fatty acid and glycerol
large number of mitochndria to release energy for active transport

Question 9

what are 5 process of digestive system

Answer 9

ingestion
digestion
absorption
assimlation
egestion

Question 10

chemical process happen in mouth

Answer 10

starch change to maltose by amylase

Question 11

explain mechanical in mouth

Answer 11

using teeth bite food and tunge mix food with salivia increase surface area form it into bolus to be sawallowed

Question 12

chemical process happen in stomach

Answer 12

protien break into ammino acid by pepsin

Question 13

function of hcl acid

Answer 13

provide optimum ph for pepsin
kill bacteria

Question 14

mechanical process happen in stomach

Answer 14

mixing of food and muscles contaract and relax to churn

Question 15

teeth

Answer 15

mechanical digestion of food by chewing,cutting,grinding food

Question 16

chemicalals broken by pancertice juice

Answer 16

starch broken to glucose by amylase
protien broken to ammino acid by trypsin
lipid broken to faaty acid and glycerol by lipase

Question 17

What is a perstalisis

Answer 17

Alteranting waves of contraction and relaxation of longitudinal and circular muscles in the walls of alimentary canal

Question 18

What two types of protease enzyme

Answer 18

Trypsin
Pepsin

Question 19

Osephogus

Answer 19

It’s a muscular tube takes food from mouth to stomach and food moves down by perstalisis

Question 20

What saliva is made of

Answer 20

Water
Mucus
Enzyme amylase

Question 21

Chemical breakdown happen in salivary gland

Answer 21

Starch break to maltose by amylase

Question 22

Where bile juice is secreted and stored

Answer 22

Secret from liver
Store in gallbladder

Question 23

Function of bile juice

Answer 23

1.break large droplets of fats to small droplets of fats that increase s.a so increase action of lipase
2.carbonate neutrilise acidic mixture from the stomach

Question 24

Function of small intestine

Answer 24

Absorb digested food

Question 25

Chemical breakdown in illueum

Answer 25

Maltose break to glucose by maltase

Question 26

Where is villi

Answer 26

Inner surface of ileum in second part of small intestine

Question 27

Function of anus

Answer 27

Pass indigestible food as faeces

Question 28

Function of rectum

Answer 28

Store faeces

Question 29

Function of colon

Answer 29

Reabsorb water and salts

Question 30

What happen in stomach

Answer 30

Protien break down to amino acid by pepsin
Has hcl kill bacteria and provide optimum pH of pepsin

Question 31

What is an alimentary canal

Answer 31

1.It’s a long tube run from mouth to anuse
2.its part of digestive system
3.include liver and pancreas
4.wall contain muscles to relax and contract to make food move along