Human Biology ( Digestive System) Key Words

Question 1

Digestion

Answer 1

The process of breaking down food with the help of enzymes and other chemicals

Question 2

Physical Digestion

Answer 2

Also known as mechanical digestion, the food is broken down by chewing the large pieces of food

Question 3

Chemical digestion

Answer 3

Digestion with the help of chemical substances.
Saliva containing an enzyme starts chemical digestion.
Proteases break down protein
Amylases break down carbohydrates
Lipase’s break down fats

Question 4

Bolus

Answer 4

Name of the small round slurry mass produced for swallowing which is the result of chewing and chemical digestion

Question 5

Peristalsis

Answer 5

Wave like muscles on the oesophagus that contract and relax taking the food down to the stomach

Question 6

Epiglottis

Answer 6

A flap of skin that covers the trachea making sure no food enters the wind pipe

Question 7

Trachea

Answer 7

Also called the wind pipe, it helps in the respiratory system and has a flap of skin over it called the epiglottis

Question 8

Amylase

Answer 8

An enzyme that breaks down carbohydrates

Question 9

Protease

Answer 9

Breaks down proteins

Question 10

Lipase

Answer 10

Breaks down the fats

Question 11

Mucus

Answer 11

A slimy substance released by the mucous glands that help in lubrication and protection