The placenta allows only nutritional subs only waste substances to leave the fetal Toxic agents that a pregnant woman eat are capable of being transmitted through While some substances are allowed to p placenta, viral sized particles, such as the

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Which of the following is a true statement?
The placenta allows only nutritional substances to enter and
only waste substances to leave the fetal blood supply.
Toxic agents that a pregnant woman eats, drinks, or inhales
are capable of being transmitted through the placenta.
While some substances are allowed to pass through the
placenta, viral sized particles, such as the AIDS virus, are
effectively blocked.
The mother's and the unborn child's blood intermingles in the
placenta.
Transcribed Image Text:Which of the following is a true statement? The placenta allows only nutritional substances to enter and only waste substances to leave the fetal blood supply. Toxic agents that a pregnant woman eats, drinks, or inhales are capable of being transmitted through the placenta. While some substances are allowed to pass through the placenta, viral sized particles, such as the AIDS virus, are effectively blocked. The mother's and the unborn child's blood intermingles in the placenta.
The 5-year-old child of two very busy parents has been
throwing tantrums. Whenever the child gets angry or upset
the parents immediately fuss over the child. Nevertheless, the
child's tantrums do not diminish. In fact, they seem to occur
more often. We may assume that the parents' fussing over this
child serves as a(n)
punisher
negative reinforcer
positive reinforcer
unconditioned response
Transcribed Image Text:The 5-year-old child of two very busy parents has been throwing tantrums. Whenever the child gets angry or upset the parents immediately fuss over the child. Nevertheless, the child's tantrums do not diminish. In fact, they seem to occur more often. We may assume that the parents' fussing over this child serves as a(n) punisher negative reinforcer positive reinforcer unconditioned response
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