Animal nutrition:
- all animals need to eat food to give them nutrients that are used in the body to provide energy.
- To repair damaged tissue and to regulate bodily processes.
Categories of animals:
Herbivore
- animals that only eat plants or parts of plants
Omnivore
- animals that eat plants, animals or dead animal esh
Carnivore
- animals that only eat other animals or the remains of other animals
Types of teeth:
Types of teeth Structure and function
Incisors • chisel-shaped
• used for biting or cutting of food
Canines • pointed
• used for catching, holding, tearing and/or killing prey
premolars • at and uneven
• used for grinding and crushing food
molars • at and uneven
• used for grinding and crushing food
Human nutrition: digestive system
• digestion = physical and chemical breakdown of complex molecules into their simplest forms
to be absorbed into the body to sustain life.
• 5 major steps
• Ingestion = intake of food
• Digestion = physical and chemical breakdown of food into its simplest form
• Absorption = the products of digestion di use into the blood stream
• Assimilation = a process which occurs in the body cells, where nutrients are broken down to
yield energy during cellular respiration.
• Egestion = the removal of undigested and unabsorbed waste from the body through the anus in
the form of faeces.
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- all animals need to eat food to give them nutrients that are used in the body to provide energy.
- To repair damaged tissue and to regulate bodily processes.
Categories of animals:
Herbivore
- animals that only eat plants or parts of plants
Omnivore
- animals that eat plants, animals or dead animal esh
Carnivore
- animals that only eat other animals or the remains of other animals
Types of teeth:
Types of teeth Structure and function
Incisors • chisel-shaped
• used for biting or cutting of food
Canines • pointed
• used for catching, holding, tearing and/or killing prey
premolars • at and uneven
• used for grinding and crushing food
molars • at and uneven
• used for grinding and crushing food
Human nutrition: digestive system
• digestion = physical and chemical breakdown of complex molecules into their simplest forms
to be absorbed into the body to sustain life.
• 5 major steps
• Ingestion = intake of food
• Digestion = physical and chemical breakdown of food into its simplest form
• Absorption = the products of digestion di use into the blood stream
• Assimilation = a process which occurs in the body cells, where nutrients are broken down to
yield energy during cellular respiration.
• Egestion = the removal of undigested and unabsorbed waste from the body through the anus in
the form of faeces.
fl ff fl
,
