360M 320 2304 2400 2060 1600 1200 300 400 Prepare a second graph based on the data given below concerning fetal weight Graph the weeks of fetal development on the x axis and the fetal mass on the y axis. Age of Fetus (in weeks gestation) Fetal Mass (grams) 4 0.5 8 1 12 15 16 100 20 300 24 650 28 650 32 1700 36 2400 38 3300 Title: Fetal Mass (grams) vs Age of Fetus (in weeks) 4 8 12 16 20 24 29 32 36.40 0 4 8 Fetal Age (weeks) Body Length of Picture Thigh Length of Picture Leg Total Length Actual Total Length of of Picture Fetal Length (mm) (mm) Picture (mm) (mm) (mm) 9 15 5 4 24 60 16 30 12 11 53 133 20 45 18 16 74 198 24 60 24 22 106 265 32 80 36 90 80 32 28 36 32 122 140 350 158 395 400 350 300 250 200 150 100 x 50 0 5 10 15 20 25 30 35 40
1. When did the fetus reach half of its final length? Hint: 408
2. When did the fetus reach half of its final mass?
3. Suppose a woman was not sure when she became pregnant. How could a doctor find out how advanced her pregnancy was? Why would it be important to know how far advanced the pregnancy was? Hint: a normal 30 week fetus should be about 300 mm and weigh about 1500 grams.
4. Why would a doctor want separate measurements of body, thigh, and calf?
5. Suppose a woman who knows she is in her 30th week of pregnancy has a fetus with a total length of 210 mm. and a mass of 900 gm (determined by ultrasound measurements). She tells her doctor that she has been drinking several beers every day. Determine (by studying your graphs) how the woman's drinking affected the development of her fetus.
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