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Question: acrosomal reaction
Choices:
release of digestive enzymes by sperm that enables them to burrow through the corona radiata and penetrate the zona pellucida of an oocyte prior to fertilization
Question: Braxton Hicks contractions
Choices:
weak and irregular peristaltic contractions that can occur in the second and third trimesters; they do not indicate that childbirth is imminent
Question: acrosome
Choices:
cap-like vesicle located at the anterior-most region of a sperm that is rich with lysosomal enzymes capable of digesting the protective layers surrounding the oocyte
Question: amnion
Choices:
transparent membranous sac that encloses the developing fetus and fills with amniotic fluid
Question: amniotic cavity
Choices:
cavity that opens up between the inner cell mass and the trophoblast; develops into amnion
Question: autosomal dominant
Choices:
pattern of dominant inheritance that corresponds to a gene on one of the 22 autosomal chromosomes
Question: autosomal recessive
Choices:
pattern of recessive inheritance that corresponds to a gene on one of the 22 autosomal chromosomes
Question: afterbirth
Choices:
third stage of childbirth in which the placenta and associated fetal membranes are expelled
Question: allantois
Choices:
finger-like outpocketing of yolk sac forms the primitive excretory duct of the embryo; precursor to the urinary bladder
Question: allele
Choices:
alternative forms of a gene that occupy a specific locus on a specific gene
Question: autosomal chromosome
Choices:
in humans, the 22 pairs of chromosomes that are not the sex chromosomes (XX or XY)