The Human Digestive System
1
, Homeostasis: an
Complex and equilibrium that defines
highly organised an organism’s internal
Composed of cells environment
Able to sense and
respond:
stimulation fosters
Life
a reaction
(e.g. motion or learning)
Carbon based Grow
chemistry
Reproduce
Requires Exchange energy and Adapt
water materials with the to the
environment environment
, Learning Objectives
• List all parts (in order) of the human digestive system
through which food passes.
• Describe the processes occurring in each of these parts.
• List the accessory organs and the substances they contribute
to the digestive process.
• Explain both mechanical digestion and chemical digestion
and where they occur.
3
, We have learnt about molecules,
macromolecules and cells. In this
lecture we look at individual
organs and an organ system.
An organ is a body part consisting
of two or more tissues.
An organ system is a team of Learning human tissues requires learning
organs that work together to different human cell types and cell arrangement.
perform a specific function.
Four basic tissue types:
1. Epithelial – covers all body surfaces and lines all body
cavities.
2. Connective (5 types) – structural framework,
What happened to tissues? transport, protection, supports, surrounds and
interconnects other tissue types, stores energy in the
form of lipids, defence.
3. Muscle – specialised for contraction, allows for
movement (skeletal, cardiac and smooth).
4. Nervous - conducts electrical impulses around the
body allowing for rapid and direct communication.
1
, Homeostasis: an
Complex and equilibrium that defines
highly organised an organism’s internal
Composed of cells environment
Able to sense and
respond:
stimulation fosters
Life
a reaction
(e.g. motion or learning)
Carbon based Grow
chemistry
Reproduce
Requires Exchange energy and Adapt
water materials with the to the
environment environment
, Learning Objectives
• List all parts (in order) of the human digestive system
through which food passes.
• Describe the processes occurring in each of these parts.
• List the accessory organs and the substances they contribute
to the digestive process.
• Explain both mechanical digestion and chemical digestion
and where they occur.
3
, We have learnt about molecules,
macromolecules and cells. In this
lecture we look at individual
organs and an organ system.
An organ is a body part consisting
of two or more tissues.
An organ system is a team of Learning human tissues requires learning
organs that work together to different human cell types and cell arrangement.
perform a specific function.
Four basic tissue types:
1. Epithelial – covers all body surfaces and lines all body
cavities.
2. Connective (5 types) – structural framework,
What happened to tissues? transport, protection, supports, surrounds and
interconnects other tissue types, stores energy in the
form of lipids, defence.
3. Muscle – specialised for contraction, allows for
movement (skeletal, cardiac and smooth).
4. Nervous - conducts electrical impulses around the
body allowing for rapid and direct communication.
