Answer:
Mercury exposure during pregnancy can interfere with the normal embryonic nervous system development, resulting in cognitive (brain) impairment of the child.
Explanation:
Large, predatory fish such as shark, sword fish, king mackerel, tilefish, marlin, orange roughy and bigeye tuna are recommended to be avoided during pregnancy because they may have high concentrations of <em>methylmercury. </em>
Methylmercury is ingested by the mother and then crosses the placenta to reach the embryo. It acts as a neurotoxin, <em>interfering with the proper development of the nervous system</em> during gestation.
The consequences of this exposure vary and can go from attention deficit to microcephaly; <u><em>deficits in attention, cognition and motor skills</em></u> have been observed.
Because fish are part of a nutritious and balanced diet, and provide many nutrients beneficial during pregnancy, it is not recommended to stop consumption of all fish while expecting.
In the Unites States of America, the FDA (Food and Drug Administration) and the EPA (Environmental Protection Agency) have issued advice on eating fish during pregnancy. They recommend eating 8 to 12 oz of seafood low-in-mercury per week and to avoid the large fish enlisted on the first paragraph.
Answer:
the main site of gas exchange is in the lungs between the alveoli and a family of really small blood vessels called capillaries. Which are placed in the walls of the alveoli.
Explanation:
O you think you're fit? More importantly, do you think you are more fit now than you were a month ago? How about a year ago? It's important to not only monitor your fitness today but to set goals, and try to improve your fitness in the future. How can you do that? Well, you can use fitness assessments<span> to measure various aspects of your body and its abilities. A fitness assessment identifies your current fitness levels and serves as a baseline, or starting point of your body's fitness. You can use this fitness assessment to figure out your training needs and goals. You then compare your progress over time to the initial fitness assessment.</span>
Because we live and be around it
The Nemours Foundation specializes in providing health care to children.
