Embryological Origins Flashcards

1
Q

Heart

A

Lateral plate mesoderm - somatic layer

Cranial neural crest

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2
Q

Limbs (skeleton & CT)

A

Lateral plate mesoderm - somatic mesoderm

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3
Q

CNS

A

Ectoderm

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4
Q

Lens, cornea (epithelium)

A

Surface ectoderm

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5
Q

Stroma of cornea, ciliary and iris muscles, vascular choroid layer, sclera, iris stroma, trabecular network, Schlemm’s canal

A

Neural crest cells

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6
Q

Corneal endothelium and angioblasts of choroid and retinal layer

A

Mesoderm

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7
Q

Retina, retinal pigment epithelium, iris

A

Ectoderm (neuroectoderm, CNS)

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8
Q

Face (except striated muscles, endothelial cells of blood vessels and enamel of teeth)

A

Neural crest

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9
Q

Prechordal plate

A

Mesoderm

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10
Q

GI tract (epithelial cells)

A

Endoderm

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11
Q

Connective tissue of GI tract

A

Lateral plate mesoderm - splanchnic mesoderm

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12
Q

Enteric nervous system

A

Vagal and sacral neural crest

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13
Q

Lung and trachea (epithelial cells)

A

Endoderm

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14
Q

Vasculature and connective tissue of lung

A

Lateral plate mesoderm - splanchnic mesoderm

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15
Q

Dermal layer of skin

A

Paraxial mesoderm (somites, dermatome)

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16
Q

Skeletal muscle of trunk and limbs

A

Paraxial mesoderm (somites, myotome)

17
Q

Vertebrae and ribs and occipital bone

A

Paraxial mesoderm (somites, sclerotome)

18
Q

Internal reproductive organs

A

Intermediate mesoderm

19
Q

Primordial germ cells, prostate gland, penis

A

Endoderm

20
Q

Connective tissue of reproductive system

A

Lateral plate mesoderm -splanchnic mesoderm

21
Q

Penis

A

Endoderm and ectoderm

22
Q

Skeleton

A

Lateral plate mesoderm, paraxial mesoderm, neural crest

23
Q

Limb skeletal elements, part of pelvis, sternum

A

Lateral plate mesoderm - somatic mesoderm

24
Q

Ribs & vertebrae and part of pelvis

A

Paraxial (somitic) mesoderm

25
Q

Facial bones

A

Cranial neural crest

26
Q

Membrane bones of cranial vault

A

Paraxial mesoderm or cranial neural crest

27
Q

Epidermis of skin

A

Ectoderm

28
Q

Enamel of teeth

A

Ectoderm

29
Q

Blood vessels

A

Lateral plate mesoderm - somatic mesoderm

30
Q

Blood

A

Mesoderm

31
Q

Muscle

A

Mesoderm

32
Q

Skeleton

A

Mesoderm

33
Q

Kidney

A

Intermediate mesoderm

34
Q

Smooth muscle cells of the lung

A

Splanchnic mesoderm