Define critical periods during pregnancy, and explain their importance in embryonic/fetal development.
What will be an ideal response?
Fetal growth and development proceed along genetically determined pathways in which cells are programmed to multiply, differentiate, and establish long-term functional levels during set time intervals. Such time intervals, known as critical periods, are most intense during the first 2 months after conception, when a majority of organs and tissues begin to form. On the whole, critical periods represent a "one-way street," because it is not possible to reverse directions and correct errors in growth or development that occurred during a previous critical period. Consequently, adverse effects of nutritional and other insults occurring during critical periods of growth and development persist throughout life.
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The correct order of segments in the large intestine from nearer the beginning to nearer the end is ________.
A. transverse colon>ascending colon>sigmoid colon B. sigmoid colon>descending colon>rectum C. cecum>ascending colon>transverse colon D. cecum>rectum>descending colon
Which group of people would have the lowest sodium intake?
a. those who avoid adding salt to their food b. those who exercise strenuously on a regular basis c. those who eat mostly processed foods d. those who eat mostly whole, unprocessed foods e. those who eat mostly soup and cheese
You talk with Jamey and her parents, who are friendly and cooperative. Jamey's mother asks if it would help for them to not let Jamey snack between meals and to reward her with dessert when she exercises
What would you tell the family regarding snacks between meals and rewards with dessert after exercise?
A hypothesis can be defined as:
a. a finding that demonstrates a cause and effect. b. a statement made prior to initiating the study to be proved or disproved. c. subjects who do not receive the treatment in a study. d. a study in which one group is randomly assigned.