Embryology Flashcards by David Sog

Muscle tissue from

Paraxial mesoderm

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Bone from

Paraxial mesoderm

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Cartilage from

Paraxial mesoderm

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Skin dermis from

Paraxial mesoderm

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Types of mesoderm

Paraxial —> somites
Intermediate
Lateral —> somatic (parietal) and splanchnic (visceral)

(Nearest to furthest from neural tube)

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Urogenital system from

Intermediate mesoderm

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Visceral covering of organs in thorax and abdomen

Splanchnic lateral mesoderm

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Inside of chest/ abdominal wall

Aka parietal tissue

Somatic lateral mesoderm (parietal)

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Epidermis of skin from

Ectoderm

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Hair nails teeth enamel

From

Ectoderm

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Cns from

Ectoderm

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Pns from

Ectoderm

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Glands from

Ectoderm

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Bits of eye from

Ectoderm

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Lining of GI tract from

Endoderm

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Lining of respiratory tract

Endoderm

(?Lining of )urinary bladder

Endoderm

Truncus arteriosus

Ascending aorta and pulmonary artery

Bulb is cord is

Smooth part of (right )ventricle

Primitive ventricle

Traveculated part of ventricles

Atrium

Tabeculated atria

Sinus venous

Coronary sinus and smooth R atrium and IVC

Primitive pulmonary vein

Smooth left atrium

How many aortic branches

What fuses to form primitive heart tube

Endocardial tubes

Rhombencephalon comprises what What do they become

Metencephalon (pons, cerebellum) Mylencephalon (medulla) 4th ventricle within here

penis/clit from

genital tubercle

urethra surroundings (corpora spongiosum)/ labia minora from

genital folds

scrotum/ labia majora from

genital swellings

lung embryology stages and timings and content

embryonic (4-7w) - lung buds off primtive gut tube (foregut endoderm)- respiratory diverticulum psuedoglanfular (7-16w) - L/R bronchi develop and some more canalicular (16-25w) respiratory bronchioles and terminal sacs develop off of terminal bronchioles alveolar (25w-birth) - alveoli devlopment inc type 1 and 2 penumocytes and surfactant