1. Chapter 2 : Nutrients
Classes of Food
The Importance of Balance Diet
A balanced diet consists of food that has all the nutrients in the right quantities.
A balanced diet is necessary for supplying energy the required , maintaining the good
health and supporting the body . A balanced diet may not be the same for everyone.
Vitamin/Mineral salt Diseases due to its deficiency
A Night blindness
B Beri-beri
C Scurvy
D Rickets
E Sterile
K Blood slow to clot
Iodine Goitre
Iron Anaemia
Calcium Rickets
Phosphorus Rickets
2. Human digestive system
CHAPTER
Digestive organ Function
(a) Mouth Food is cut into small pieces
(b) Oesophagus Channels food to the stomach
(c) Stomach Digestion of protein begins
(d) Small intestine Digestion of fat, protein, and starch and absorption of food
(e) Pancreas Secretes pancreatic juice containing enzymes
(f) Liver Secretes bile to emulsify fat
(g) Large intestine Absorbs water and formation of faeces
(h) Rectum Stores faeces
(i) Anus Removes faeces from the body
Food Pyramid
