PSY 219 Exam 1 CHP 3 Questions And Answers Rated A+
Fertilization usually occurs in the
A) ovary. B) uterus. C) vagina. D) fallopian tube. ANS fallopian tube
A fertilized egg is also known as
A) fetus. B) zygote. C) embryo. D) blastocyst. ANS a zygote
The germinal period is approximately...
PSY 219 Exam 1 CHP 3 Questions And Answers Rated
A+
Fertilization usually occurs in the
A) ovary. B) uterus. C) vagina. D) fallopian tube. ANS fallopian tube
A fertilized egg is also known as
A) fetus. B) zygote. C) embryo. D) blastocyst. ANS a zygote
The germinal period is approximately how long?
A) one month B) two weeks C) one week D) two months ANS two weeks
The germinal period includes
A) formation of the amnion. B) formation of the placenta. C) creation of the zygote. D) creation of
the organs. ANS creation of the zygote
A(n) _____ later develops into an embryo
A) placenta B) ectoderm C) trophoblast D) blastocyst ANS blastocyst
During implantation, the zygote attaches to the wall of the
A) ovaries. B) vagina. C) uterus. D) fallopian tubes. ANS uterus
Which of the following terms refers to an outer layer of cells that develops during the germinal
period and later provides nutrition and support for the embryo?
A) ectoderm B) endoderm C) blastocyst D) trophoblast ANS trophoblast
Implantation takes place about ________ days after conception
A) 10 to 14 days B) 20 days C) 25 to 30 days D) 40 days ANS 10 to 14 days
, The embryonic period lasts ________ weeks after conception.
A) from ten to sixteen B) from two to eight C) from eight to ten D) from zero to two ANS from
two to eight
The endoderm, ectoderm, and mesoderm form during the ________ period.
A) fetal B) zygotic C) germinal D) embryonic ANS embryonic
Which of the following structures of an embryo are derived from the endoderm?
A) Hair, skin, and nails B) Muscles and bones C) Digestive and respiratory systems D) Nervous
system ANS Digestive and respiratory systems
The baglike structure that contains a clear fluid in which the developing embryo floats is called the
A) placenta. B) fallopian tube. C) amnion. D) uterus. ANS amnion
The neural tube eventually becomes the
A) spinal cord. B) optic nerve. C) umbilical vein. D) placenta. ANS spinal cord
The fetal period ends
A) at the end of the first trimester. B) when implantation is complete. C) at the end of the third
trimester. D) when the heart begins to beat. ANS at the end of the third trimester.
Which of the following events in fetal growth occurs during the last two months of pregnancy?
A) The heartbeat begins. B) Irregular breathing begins. C) Organogenesis occurs. D) Fatty tissues
develop. ANS Fatty tissues develop.
Which of the following happens toward the end of a baby's development in the womb?
A) Irregular breathing movements occur. B) The grasping reflex develops. C) Fetal movements are
felt by the mother. D) The fetus gains most of its weight. ANS The fetus gains most of its weight.
When do the germinal and embryonic periods occur?
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