Digestive System
ICSE · Class 9 · Biology
All formulas from Digestive System in ICSE Class 9 Biology. Key equations, constants, and identities for board exam preparation.
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Teeth and Dentition
Human dental formula (child): 2,1,2,0 / 2,1,2,0 = 20
Human dental formula (adolescent): 2,1,2,2 / 2,1,2,2 = 28
Human dental formula (adult): 2,1,2,3 / 2,1,2,3 = 32
Saliva and Swallowing
Starch --(Ptyalin)--> Maltose
Stomach
Pepsinogen (inactive) --HCl--> Pepsin (active); Pepsin + Proteins --> Peptides
Prorennin (inactive) --> Rennin (active); Milk Protein/casein --Rennin--> Paracasein
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