AP PSYCHOLOGY

DEVELOPMENTAL PSYCHOLOGY

PRENATAL DEVELOPMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A procedure in which sound waves are used to make a video image of the unborn baby
A
ultrasound
B
fetal monitoring
C
chorionic villi sampling
D
amniocentesis
Explanation: 

Detailed explanation-1: -Diagnostic ultrasound, also called sonography or diagnostic medical sonography, is an imaging method that uses sound waves to produce images of structures within your body.

Detailed explanation-2: -Ultrasound probes, called transducers, produce sound waves that have frequencies above the threshold of human hearing (above 20KHz), but most transducers in current use operate at much higher frequencies (in the megahertz (MHz) range). Most diagnostic ultrasound probes are placed on the skin.

Detailed explanation-3: -During an ultrasound, sound waves are bounced off the baby’s bones and tissues to make an image showing the baby’s shape and position in the uterus. Also called a sonogram, sonograph, echogram, or ultrasonogram, an ultrasound is done to: confirm the expected date of delivery. detect pregnancies outside the uterus.

Detailed explanation-4: -A gel is placed between the ultrasound probe (transmitter/receiver unit) and the skin to allow ultrasound waves to be transmitted into and out of the body. A computer is used to build images of the unborn baby from the reflected ultrasound waves detected by the probe.

Detailed explanation-5: -An ultrasound scan uses high-frequency sound waves to create images of the inside of the body. It is suitable for use during pregnancy. Ultrasound scans, or sonography, are safe because they use sound waves or echoes to make an image, instead of radiation.

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