Why is it particularly important for a pregnant woman to obtain all of the essential nutrients (or have adequate stores of them) during the critical periods of embryonic/fetal development?
These critical periods are called so because organs such as the brain or heart develop in a definite time period, and if essential nutrients are lacking, these structures may not develop completely, which will compromise their function. Once the heart forms, it cannot "reform" at a later time. The nutrients to support optimal tissue and organ development need to be present at just the right time. Early malnutrition at around 10 weeks' gestation may impair the development of the heart and brain.
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No single nutrient is more essential to growth than ____________________
Fill in the blank with correct word
The number of subjects needed for a study _____
a. is determined by a mathematical formula and should be as small as possible b. should be large enough to exclude differences between the control and experimental groups due to chance c. should be kept small so that the data are manageable and there is less room for statistical error d. is determined by a mathematical formula and should be large enough to exclude differences between the control and experimental groups due to chance e. is determined by randomization and therefore, can be scaled as needed
Inadequate fiber intake has been reported to worsen the symptoms of heartburn in some people
a. True b. False Indicate whether the statement is true or false
Infants with intrauterine growth retardation are at increased risk for metabolic disturbances related to metabolism of _____
a. fatty acids only b. proteins only c. fatty acids and proteins d. fatty acids and glucose e. fatty acids, proteins, and glucose