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sábado, 10 de diciembre de 2011

Del embarazo al nacimiento / From Pregnancy to Birth






El inicio: La Concepción /The beginning: Conception


Al empezar a dividirse, comienza la 1ra. etapa: Germinal
As begin to divide, Germinal, 1st. stage, starts








Desde la 3ra. semana hasta la 8va., la segunda etapa: Embrionica /
From the 3rd. week until the 8th., the second stage: Embryonic









Desde la 9na. semana hasta el nacimiento: La etapa Fetal /
From the 9th. week until birth, the Fetal stage










Un aspecto muy importante para llevar a buen termino un embarazo:
Ejercicio adecuado / A very important aspect to successfully finish a pregnancy:
Adequate exercise

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The Ever Changing Brain


The Ever Changing Brain


Do you consider your brain to be fully matured?

When do you think the brain reaches full maturity?

The answers to these questions might surpraise you.

In fact, the brain grows in spurts from conception until well into adulthood (Fisher & Rose, 1994). In childhood and adolescence, many of these spurts are correlated with major advances in physical and intellectual skills, such as the aquisition of fluency in language that happens around age 4 for most children. Each growth spurt also seems to involve a different brain area. For example, the spurt that begins around 17 and continues into the early 20s mainly affects the frontal lobes, where, you'll recall, the abilities to plan and to control one's emotions are located. Differences between teens and adults in these abilities may be the result of this growth spurt.

Changes in brain function are influenced by several development processes.

Synaptogenesis
Synapsis develop as a result of the growth of both dendrites and axons. This process, known as Sinaptogenesis, occurs in spurts throughout the life span. Each spurt is followed by a period of pruning, the process through which the developing brain eliminates unnecesary or redundant synapses. The activity of neurotransmitters within the synapses also varies with age. For example, acetylcholine is less plentiful in the brains of children than in teens and adults. This difference may help explain age differences in memory and other functions influenced by this excitatory neurotransmitter.

Making Your Pregnancy Safer

Making Your Pregnancy Safer


BY AWAKE! WRITER IN MEXICO

ACCORDING to the United Nations Population Fund, each year more than half a million women die of pregnancy-related causes. In addition, the United Nations Children’s Fund (UNICEF) notes that annually more than 60 million women suffer acute complications from pregnancy and that nearly a third of these sustain lifelong injuries or infections. In developing countries many women are trapped in a cycle of pregnancies, deliveries, and self-neglect, leaving them worn out and ill. Yes, pregnancy can be harmful—even dangerous. Is there anything a woman can do to make her pregnancy safer?

Health Care Before Pregnancy

Planning. Husbands and wives may need to discuss how many children to have. In developing countries it is common to see women with small children nursing a baby and, at the same time, expecting another. Careful planning and consideration might allow time to elapse between the birth of one child and the next, resulting in relief for the woman, who would then be able to recuperate after giving birth.

Nutrition. According to the Coalition for Positive Outcomes in Pregnancy, before becoming pregnant a woman needs at least four months to recover from exposure to harmful substances and to build a good nutritional supply. For example, the risk of spina bifida, caused by a defective closing of the neural tube, is greatly reduced when the expectant mother has an ample supply of folic acid. Since the embryo’s neural tube closes between the 24th and 28th day after conception—long before many women realize that they are pregnant—some women who are planning to become pregnant take folic acid.

Another crucial nutrient is iron. Indeed, a woman’s iron requirement doubles during pregnancy. If her reserve is low—which is true of many women in developing countries—she can come to have iron-deficiency anemia. This condition can be worsened by repeated pregnancies, as the woman may not have time between them to replenish her iron reserve.

Concepción / Conception: La foto 1600 x 1200 pix.

jueves, 1 de diciembre de 2011

Jane Goodall: La cita / The Quote

“Ahora que finalmente nos hemos dado cuenta del terrible daño que hemos ocasionado al medio ambiente, estamos extremando nuestro ingenio para hallar soluciones tecnológicas.”
 Jane Goodall.- (Londres, 1934 -) Naturalista y primatóloga inglesa que ha dedicado su vida al estudio del comportamiento de los chimpancés en África. 

"Now that finally we realize the terrible damage that we have caused to the environment, we are to extremes our genius to find technological solutions." 
Jane Goodall.- (London, 1934 -) English naturalist and primatologist who has dedicated his life to studying the behavior of chimpanzees in Africa.


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