Nutrition during Growth and Development

Peckos, Penelope S.

doi:10.2307/1126190

Cited by 1 publication

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“…A proper nutritional status of the expectant mother prior to pregnancy is a key factor in satisfactory nutrition during the period of gestation. During the second and third trimesters of pregnancy the quantities of protein, calcium, iron, and iodine, as well as vitamins A, B, and D, have to be moderately increased in order to meet the demands of fetal growth [2,9].…”

Section: Influences On Prenatal Developmentmentioning

confidence: 99%

Prenatal development.

Pikunas¹,

Albrecht²

1961

Psychology of Human Development.

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Prenatal DevelopmentTHE MmACLE of growtli and development is never more perfectly illustrated than during the period prior to birth. During this time the organism changes from a comparatively simple single-cell structure to a tremendously complex stmcture consisting Uterally of billions of cells. The multipUcation of cells is not, however, the remarkable aspect of this period of growth. It is rather the differentiation of these cells into various functioning units which constitutes the remarkable aspect and real essence of prenatal development. Thus, from the original single cell develop cells and stmctures which are sensitive to specific stimuli, the receptors; cells which are capable of contracting, the muscles; cells which form and secrete a variety of chemicals, the glands; and cells which are ordained to a vast array of other functions.The prenatal phase of development may be divided into three important stages. In each of these, specific tasks must be accomplished. The fulfillment of these, however, is not without serious obstacles and dangers. Generally, under normal conditions these obstacles and dangers are overcome. The prenatal period encompasses very crucial growth since every other period of development depends upon the adequacy with which the tasks of the prenatal phases have been mastered. PERIOD OF THE ZYGOTEOf the period of prenatal development's three general stages, the first is termed the period of the zygote or period of the ovum. Beginning at the time of conception, this period extends to about the end of the second week of Ufe. As in the other stages of development, essential processes are inherent in this period. Moreover, definite dangers to the further growth and development of the organism are present. Each stage

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Section: Influences On Prenatal Developmentmentioning

confidence: 99%