Zusammenfassung der Ressource
Frage 1
Frage
The ___ is a ___ structure composed of ___ ( ____ ) and ___ membrane tissues, where the ___ and ___ blood circulations are brought very close together over a ___ surface area, but do not mix.
Antworten
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placenta | disc-shaped | maternal | endometrial | fetal | maternal | fetal | huge
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placenta | cone | maternal | endometrial | fetal | paternal | fetal | tiny
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placenta | disc-shaped | paternal | endometrial | embryonic | maternal | fetal | large
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placenta | oval | maternal | endometrial | fetal | maternal | fetal | small
Frage 2
Frage
___ and ___ are connected by ___ and a ___ in the ___. Exchange in the placenta takes place via ___ and ___.
Antworten
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Placenta | fetus | arteries | vein | umbilical cord | diffusion | active transport
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Umbilical cord | fetus | arteries | vein | placenta | diffusion | active transport
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Placenta | fetus | arteries | vein | umbilical cord | diffusion | bulk transport
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Placenta | embryo | arteries | vein | umbilical cord | diffusion | active transport
Frage 3
Frage
Movements across the placenta involve :
Antworten
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oxygen & carbon dioxide
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water & glucose
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antibodies & amino acids
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urea & ions & glucose
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urea & glucose & blood
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oxygen & carbon monoxide
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antibodies & viruses
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amino acids & starch
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ions & electrons & phospholipids
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water & maternal waste products
Frage 4
Frage
The placenta is ___ bacteria, although ___.
Antworten
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a barrier to | some viruses can cross it
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a pathway for bacteria | no pathogens can live in it
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a barrier to | most viruses can cross it
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a barrier to | all viruses spread trying to cross it