吉林大学
第一章The time between fertilization and birth is called ___________.
prenatal period
perinatal period
germinal period
答案:prenatal period
What’s the function of mucus?
To block the entrance of the sperm to the woman’s womb for all time
To attack the sperm from all directions
Transformed by hormones to from a barrier into a chemical rope ladder for sperm to enter the cervix
答案:Transformed by hormones to from a barrier into a chemical rope ladder for sperm to enter the cervix
Where does the union of a human egg and sperm usually occur in?
the ampulla of the fallopian tube
cervix
ovary
答案:the ampulla of the fallopian tube
The head of the sperm contains______________.
the nucleus and the flagellum
the nuclei and the flagellum
the nuclei and the acrosome
答案:the nucleus and the acrosome
The organelles, which are responsible for giving energy to propel the sperm towards the egg are called______?
flagellums
torpedoes
mitochondria
答案:mitochondria
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