What percentage of sperm cells introduced into the vagina normally reach the oocyte? correct answers Less than 1%
The term syngamy refers to the ____. correct answers sperm penetrates to the zona pellucida & entry into the secondary oocyte
How many days after fertilization does implantation o...
A&P ll Ch.28 || with Complete Solutions.
What percentage of sperm cells introduced into the vagina normally reach the oocyte? correct
answers Less than 1%
The term syngamy refers to the ____. correct answers sperm penetrates to the zona pellucida &
entry into the secondary oocyte
How many days after fertilization does implantation of the blastocyst occur? correct answers 6
days
At day 4 after fertilization, the solid ball of cells that has formed is called the ___. correct
answers Morula
Implantation usually occurs in the ___. (which part of uterus) correct answers posterior wall of
the body or fundus of the uterus
The enzymes that allow implantation to occur are produced by the ____. correct answers
synchtiotrophoblast
The human gestation period is about ____. (how many weeks) correct answers 38 weeks
The chorion develops from the ____. correct answers trophoblast
The embryonic disc develops from the ____. correct answers inner cell mass
The embryonic period of development covers what time period? (during pregnancy) correct
answers first two months following fertilization
For fertilization to occur, a sperm must penetrate ____. correct answers corona radiata -> zona
pellucida & clear glycoprotein layer
The amnion forms from the ____. correct answers cytotrophoblast
The yolk sac forms from the ____. correct answers endoderm of inner cell mass
The extraembryonic coelom becomes the _____. correct answers ventral body cavity
The "water" referred to when a woman's "water breaks" prior to delivery is _____. (which fluid)
correct answers amniotic fluid
The endometrium is digested by enzymes released from the ____. correct answers
synctiotrophoblast
Exchange of gases, nutrients, and wastes between maternal and fetal blood takes place between
the ____. correct answers decidua basalis & chronic villi
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