GEST
发表于 2025-3-30 11:10:01
Respiratory System,s) and cephalic levels of the pharyngeal foregut (nasopharynx); the lower respiratory passages (larynx, trachea, bronchi) and lungs develop from a respiratory primordium originating from the ventral wall of the pharynx.
不连贯
发表于 2025-3-30 16:19:09
Cardiovascular System,ays), a primitive ‘ebb and flow’ circulation has been established; by the end of the fourth week (28 days), the blood has begun to circulate, regularly and unidirectionally, through the embryonic and extraembryonic (placental) vessels.
forebear
发表于 2025-3-30 19:25:37
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chronicle
发表于 2025-3-30 23:13:23
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invulnerable
发表于 2025-3-31 02:06:38
Mit transformativer Autorität in FührungThe urinary system develops from the . (nephrotome) connecting the segmented and nonsegmented (lateral plate) mesoderm. The genital system (gonads and genital ducts) also develop from intermediate mesoderm but the primordial germ cells originate in the yolk sac and subsequently migrate to populate the developing gonads.
极大的痛苦
发表于 2025-3-31 07:04:31
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流眼泪
发表于 2025-3-31 10:28:30
Nervous System,The presence of a notochord is necessary for initiating development of the nervous system, however, complete histological differentiation also requires the presence of segmented paraxial mesoderm (somites).
亲密
发表于 2025-3-31 15:31:16
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Indebted
发表于 2025-3-31 18:13:46
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Dictation
发表于 2025-3-31 22:03:09
978-0-387-97776-8Springer-Verlag New York, Inc. 1992