Levels of Organization

Cells

Levels of Organization Cells: microscopic units of living matter

Levels of Organization Cells: microscopic units of living matter – Each individual begins as a single cell that is capable of mitosis and differentiation..\Desktop\overview.mov..\Desktop\overview.mov

–As a consequence of mitosis and differentiation, four cell groups develop

1. Epithelial cells

1. Epithelial cells: examples

Liver Cell (TEM 9,400x)

2.Connective tissue cells

2.Connective tissue cells: examples

3. Muscle cells

3. Muscle cells: examples

4.Nerve and glial cells

4.Nerve and glial cells: examples

Levels of Organization, cont’d. Cells

Levels of Organization, cont’d. Cells Tissues

Levels of Organization, cont’d. Cells Tissues – Epithelial

Levels of Organization, cont’d. Cells Tissues – Epithelial

Levels of Organization, cont’d. Cells Tissues – Epithelial – Connective

Levels of Organization, cont’d. Cells Tissues – Epithelial – Connective –

Levels of Organization, cont’d. Cells Tissues – Epithelial – Connective – Muscle

Levels of Organization, cont’d. Cells Tissues – Epithelial – Connective – Muscle

Levels of Organization, cont’d. Cells Tissues – Epithelial – Connective – Muscle – Nervous

Levels of Organization, cont’d. Cells Tissues – Epithelial – Connective – Muscle – Nervous

Levels of Organization, cont’d. Cells Tissues – Epithelial – Connective – Muscle – Nervous Organs C:\WIN95\Profiles\Carey000\My Documents\My Pictures\lung.mov C:\WIN95\Profiles\Carey000\My Documents\My Pictures\lung.mov

Levels of Organization, cont’d. Cells Tissues – Epithelial – Connective – Muscle – Nervous Organs Organ Systems

Woodcut from De Humani Corporis Fabrica by De Humani Corporis Fabrica Andreas VesaliusAndreas Vesalius, published in

Levels of Organization, cont’d. Cells Tissues – Epithelial – Connective – Muscle – Nervous Organs Organ Systems

The Organism

Andreas Vesalius (1514 – 1564)