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13 Cards in this Set
- Front
- Back
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what does the endoderm develop?
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lining of GI tract from pharynx to rectum; epithelium of trachea; bronchi, lungs, liver, pancreas, urinary bladder
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what does the ectoderm develop?
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mucous membrane, tooth enamel, hair, nails, mammory glands, nervous system; neural tube formation
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what does the mesoderm develop?
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heart, blood vessels, spleen, blood and lymph cells, bones, muscles; umbilical vessels pass through the connecting structure to the placenta
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Fetal development:
length? weeks 1-3 |
4/16 inch
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Fetal development:
developing characteristics weeks 1-3 |
embryo curls to C-shape; forebrain develops; heart prominence; arm and leg buds; primitive ears and eyes; yolk sac becomes primitive gut; early development of lungs and kidneys
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Fetal development:
length weeks 4-7 |
1-5 inch
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Fetal development:
developing characteristics weeks 4-7 |
continued brain development; retina, heart chambers, fingers, toes, eyes; palate and upper lip form; GI tract develops, but is still part of the umbilical cord; urogenital tract
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Fetal development:
length and weight weeks 8-10 |
1-1/8 inches
1-15 ounce |
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Fetal development:
developing characateristics weeks 8-10 |
growth and maturation of structures that have already begun to form; skeleton bvegins to calcify
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Fetal development:
length and weight weeks 11-12 |
4-1/2 inches
2/3 ounce |
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Fetal development:
developing characteristics weeks 11-12 |
facial features, eyelids, intestine separates from umbilical cord; palate fusion; genital structures visible; nail beds and tooth buds form
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Fetal development:
length and weight weeks 13-16 |
7-1/2 inches
3-1/3 ounces |
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Fetal development:
developing characteristics weeks 13-16 |
limbs and trunk grow; fetus becomes active; placenta is prominent
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