Kylie Anderson
Week 3 Workbook
Developmental Psychology

#3 on page 6; Describe the ultrasound procedure as performed by Dr. Cohen. What is the position of the baby? What structures does Dr. Cohen identify? What important health information is learned as a result of this ultrasound test? Be specific. * An ultrasound is a machine that uses sound waves to produce an image of the unborn baby for analysis. * The baby is in the breech position, which means that butt is facing down and usually 95% of the time the baby will turn around closer to birth. * Dr. Cohen identified the placenta which feeds the baby oxygen and nutrients. He also identified the cerebellum which is hotdog shaped and is very important. If the cerebellum is normal you have a lower risk of spina bifida. He also identified the spine, heart and the thigh joints of the baby. * The important health information that is learned is that they make measurements of the limb lengths, if the femur length/thigh bone length is short; it is associated with Down syndrome.

#4 on page 6; Describe two structural abnormalities and/or markers of chromosomal abnormalities discussed by Dr. Cohen as he performs the ultrasound. * Down syndrome is one of the abnormalities that Dr. Cohen discussed. Down syndrome is a genetic chromosome 21 disorder causing developmental and intellectual delays. As I described in the last answer of #3, if the thigh bone length is short it can be associated with Down syndrome. They can also do a blood test on you to determine the number of chromosomes and see if they have down syndrome or not.

* Spina bifida is one of the other abnormalities that Dr. Cohen mentioned. Spina bifida is a birth defect in which a developing baby's spinal cord fails to develop