Germ Layers -- Worm Man

Front 1

Ectoderm Layers

Back 1

1. Surface Ectoderm
2. Neural Tube
3. Neural Crest Cells

Front 2

Surface Ectoderm

Back 2

1. Epidermis
Derivatives: hair, fingernails, tooth enamel, sweat glands, mammary glands

Front 3

Neural Tube

Back 3

Creates all of CNS (Neurons and Glials Cells)

Creates Axons of Motor Neurons w/cell bodies in CNS

Front 4

Neural Crest Cells

Back 4

*Migrate all over body

Creates:
1. All of PNS
2. Pigment Cells in skinn
3. Connective Tissue in head
4. Many other places (tooth dentine, adrenal medulla, great vessels of heart)

Front 5

Endoderm

Back 5

Epithelia of Gut tube
Derivatives:
Lungs, trachea, liver, pancreas

Front 6

Mesoderm Layers

Back 6

1. Axial
2. Paraxial --> Somitomers --> Somites
3. Intermediate Mesoderm
4. Lateral Mesoderm

Front 7

Axial Mesoderm

Back 7

Creates notochord

Front 8

Paraxial-->Somitomeres-->Somites

Back 8

1. Sclerotome -- Migrate medially to form Vertebrae and Ribs
2. Dermatome -- Migrate under ectoderm to form connective tissue (dermis)
3. Myotome -- Migrate to form skeletal muscle within body and limbs
a. hypomere -- Body wall and Limbs
b. Epimere -- muscles in back

Front 9

Intermediate Mesoderm

Back 9

Forms Urinary and reproductive Track

Front 10

Lateral Plate Mesoderm

Back 10

1. LPM Somatic Mesoderm -- Forms most connective tissues and smooth muscles

2. LPM Splanchnic -- Forms all of cardiovascular system. Froms most connective tissues and smooth muscle of endoderm-lined organs and epithelial linings of body coelom.