Events in Human Nutrition (Leaving Cert Biology): Flashcards

Taking food into the mouth

Physical and chemical breakdown of food

Physical and chemical

Allow small food molecules to be absorbed through intestines

Small molecules pass from digestive system into blood

How the body uses absorbed food molecules (e.g. for energy)

Removing unabsorbed food from digestive system as faeces

Removal of metabolic waste from the body

Egestion removes unabsorbed food; excretion removes metabolic waste

Carbon dioxide excreted through lungs