Closure of the ductus venosus. The ductus venosus, which carries portal and umbilical blood to the inferior vena cava, is functionally closed within hours of birth. Permanent closure begins a few days after birth and is complete by 18-20 days of age . The duct becomes the ligamentum venosum in a fis
Postnatal growth and morphological development of the brain: a species comparison
โ Scribed by Rebecca E. Watson; John M. DeSesso; Mark E. Hurtt; Gregg D. Cappon
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 181 KB
- Volume
- 77
- Category
- Article
- ISSN
- 1542-9733
No coin nor oath required. For personal study only.
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We compared the ontogeny of collagen (hydroxyproline), elastin (desmosine), soluble protein, and DNA in the lungs of rate and humans during gestation and postnatal life. In humans, lung weight/body weight ratios declined faster during gestation than postnatally, whereas in rats lung weight/body weig