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Questions and Answers
Where does the process of fertilization occur?
Where does the process of fertilization occur?
- In the uterus
- In the ovaries
- In the cervix
- In the ampulla of the fallopian tube (correct)
How many sets of chromosomes do spermatozoon and egg cells each contribute to the zygote?
How many sets of chromosomes do spermatozoon and egg cells each contribute to the zygote?
- 23 (correct)
- 24
- 22
- 21
What is the term for a pregnancy with more than one fetus at a time?
What is the term for a pregnancy with more than one fetus at a time?
- Singleton pregnancy
- Twin pregnancy
- Multiple pregnancy (correct)
- Single pregnancy
How long does pregnancy typically last?
How long does pregnancy typically last?
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What is the term for the process of the embryo attaching to the lining of the uterus?
What is the term for the process of the embryo attaching to the lining of the uterus?
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What is a common symptom of pregnancy?
What is a common symptom of pregnancy?
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Study Notes
Fertilization
- Fertilization occurs in the ampulla of the fallopian tube, where a human egg and sperm cell unite to produce a zygote.
- The process involves the fusion of 23 sets of chromosomes from a spermatozoon and 23 sets of chromosomes from an egg cell.
- The fertilized egg (zygote) undergoes repeated cell division as it moves down the fallopian tube towards the uterus.
Implantation
- After fertilization, the embryo attaches to the lining of the uterus, usually near the top, in a process called implantation.
- Implantation is completed within 9-10 days after fertilization.
Pregnancy
- Pregnancy, also known as the gestation period, lasts approximately 40 weeks (280 days) from the last menstrual period to delivery.
- A pregnancy with more than one fetus at a time is called a multiple pregnancy (twin or triplet).
- Common signs and symptoms of pregnancy include:
- Missed periods
- Tender breasts
- Morning sickness (nausea, vomiting)
- Increased hunger
- Frequent urination
- Pregnancy can be confirmed through a pregnancy test.
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