organs

Question 1

what is an organ

Answer 1

An organ is a collection of tissues that structurally form a functional unit specialized to perform a particular function. Your heart, kidneys, and lungs are examples of organs.

Question 2

order of the organs

Answer 2

mouth - oesophagus - stomach - small intestine - large intestine - anus

Question 3

teeth

Answer 3

used to bite and chew your food to break it down into smaller pieces

Question 4

mouth

Answer 4

food and saliva are mixed; teeth mechanically break food into smaller pieces

Question 5

tongue

Answer 5

Involved in rolling food into a round ball that is then pushed to the back of your mouth then swallowed

Question 6

gallbladder

Answer 6

bile made in liver is stored here; bile breaks up fats into droplets small enough to be transported to the rest of the body

Question 7

pancreas

Answer 7

makes pancreatic juice, which is alkaline (base dissolved in water) so it neutralises the stomach acid. Enzymes that breakdown proteins, fats and carbohydrates are also made here

Question 8

small intestine

Answer 8

a tube about 6 metres long. Food moves through it by peristalsis. The small intestine makes enzymes that complete the digestion process. The cells in the wall of the small intestine release over 5 litres of mucus in the water each day. it is in the small intestine that nutrients from the now almost totally digested food are absorbed into your bloodstream. The blood then carries all the nutrients to the cells of your body

Question 9

appendix

Answer 9

plays no part in the digestion process in humans. However it is believed to play a role in fighting some diseases

Question 10

anus

Answer 10

the faeces passes through here when you go to the toilet

Question 11

salivary glands

Answer 11

makes about 1.5 litres of saliva each day. Saliva contains enzymes that begin breaking down starch in foods

Question 12

epiglottis

Answer 12

a flap of tissue closes off your trachea (windpipe) so that food doesn’t go to your lungs and cause you to choke

Question 13

oesophagus

Answer 13

also known as the food pipe or gullet. It carries the food to the stomach, using involuntary muscular contractions known as peristalsis

Question 14

liver

Answer 14

the largest internal organ. It makes bile which breaks down fats come on controls blood sugar, destroys poisons, and stores vitamin A vitamin D and iron’s.

Question 15

stomach

Answer 15

A temporary food storage area, Which can expand to hold between 2 and 4 litres of food. Muscle movement in the stomach wall mix the food with gastric juices which helps to breakdown the proteins. The stomach also contains dilute hydrochloric acid, which kills germs and provides a suitable environment for protein digestion

Question 16

large intestine

Answer 16

also known as the colon. Undigested material passes into the large intestine. As the material is pushed through it by peristalsis, water, Salts and vitamins are absorbed so that they can be reused by the body

Question 17

rectum

Answer 17

the final part of the large intestine. This is where the faeces are stored