Which procedure is used to detect abnormalities in the first trimester of pregnancy, and involves high-frequency transvaginal probes and digital visual processing?
A. fetal blood sampling (FBS)
B. sonoembryology
C. embryoscopy
D. first-trimester screen
Answer: B
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Youths with autism are sometimes aggressive and impulsive and fail to pay close attention to others. Youths with attention deficit hyperactivity disorder have learning problems such as difficulty reading. These examples indicate that developmental and disruptive behavior disorders may be
a. multiply diagnosed. b. comorbid. c. selective. d. more common than previously thought.
46 XY DSD can result from a deficiency in ______ that is needed for masculinizing the external genitalia.
A. 17á-hydroxysteroid B. aromatase C. estradiol D. estrogen
Infants that are supplied sugar water via pacifiers often quickly calm down when agitated,
and remain that way when the pacifier is taken away. Based on taste research, what is the most likely explanation for this finding? A) The infants find the tactile sensation of the pacifier comforting. B) The infants like the sweet taste associated with sucrose or sugar. C) Sugar or sucrose triggers self-regulatory skills in infants that reflect nervous system development. D) The infants like the liquid sensation; supplying infants water-filled pacifiers results in the same effect.
Research on taste shows that:
a. the taste receptor cells are replaced by new cells about every 40 days. b. the tongue is divided into sections, each of which is sensitive to a particular basic taste. c. people who are above 40 years of age have fewer taste buds than those who are younger. d. the highest concentration of taste buds is found in the center of the tongue.