During which process is exposure to teratogens most devastating for the development of the embryo's organs?
A) formation of the blastula B) cleavage
C) organogenesis D) gastrulation
Answer: C
You might also like to view...
Like proteins, eicosanoids are synthesized on ribosomes in a process that involves transcription and translation
Indicate whether this statement is true or false.
Mrs. Becker is trying to become pregnant. One of the Beckers' favorite ways of relaxation is to soak in the hot tub while drinking wine. A year has gone by with no pregnancy occurring, so they visit your clinic. You conclude that the hot tub is a possible factor in Mr. Becker's infertility. Angered and insulted, both assure you that they have no difficulty having intercourse, unless Mr. Becker
has had too much wine, which happens infrequently. How will you explain to them the difference between impotence and infertility? Why should you suspect the hot tub as a factor in Mr. Becker's lowered sperm count? Is the wine a factor as well? What will be an ideal response?
Pacemaker cells of the SA node depolarize about
A) 60-70 times per minute. B) 40-50 times per minute. C) 80-100 times per minute. D) 120-140 times per minute. E) None of the answers are correct.
List and describe the cells and chemicals the body uses as its second line of defense
What will be an ideal response?