PPT Slide

brain,

spinal cord,

spinal nerves

zygote

blastula

gastrula

endoderm

glands

pancreas, liver

lining of

respiratory tract

lining of

digestive tract

pharynx

mesoderm

circulatory

system

blood, vessels

somites

ectoderm

gonads

kidney

ventral

nerve cord

neural crest

chordates

vertebrates

integuments

lining of

thoracic and

abdominal cavities

outer covering

of internal organs

dermis

segmented

muscles

gill arches,

sensory

ganglia,

Schwann cells,

adrenal medulla

notochord

heart

skeleton

The Primary

Germ Layers

epidermis

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