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Questions and Answers
What is the correct sequence of events during the first week of development?
What is the correct sequence of events during the first week of development?
- Blastocyst formation, Fertilization, Cleavage of the zygote, Implantation
- Cleavage of the zygote, Fertilization, Implantation, Blastocyst formation
- Fertilization, Cleavage of the zygote, Blastocyst formation, Implantation (correct)
- Implantation, Cleavage of the zygote, Fertilization, Blastocyst formation
When does the fetal period begin during human development?
When does the fetal period begin during human development?
- At the end of the first trimester
- At the eighth week
- At fertilization
- At week nine (correct)
What is the correct term for the study of development from fertilized egg through the eighth week?
What is the correct term for the study of development from fertilized egg through the eighth week?
- Fetalology
- Embryology (correct)
- Embryogenesis
- Genetics
How is prenatal development divided in terms of time?
How is prenatal development divided in terms of time?
Where does fertilization normally occur in humans?
Where does fertilization normally occur in humans?
What process occurs within 12-24 hours after ovulation?
What process occurs within 12-24 hours after ovulation?
What is the function of zona pellucida in relation to implantation?
What is the function of zona pellucida in relation to implantation?
When does the blastocyst usually orient with its inner cell mass towards the endometrium?
When does the blastocyst usually orient with its inner cell mass towards the endometrium?
What happens about 7 days after fertilization in relation to the blastocyst?
What happens about 7 days after fertilization in relation to the blastocyst?
Which phase is the endometrium in when the blastocyst attaches to the uterine wall?
Which phase is the endometrium in when the blastocyst attaches to the uterine wall?
What is the functional layer of the endometrium known as after implantation?
What is the functional layer of the endometrium known as after implantation?
What happens to the endometrial glands around the time of blastocyst attachment?
What happens to the endometrial glands around the time of blastocyst attachment?
What is the primary function of capacitation in the fertilization process?
What is the primary function of capacitation in the fertilization process?
What is the primary role of the acrosome reaction?
What is the primary role of the acrosome reaction?
What is the primary mechanism that prevents polyspermy?
What is the primary mechanism that prevents polyspermy?
What is the primary function of the zona pellucida after fertilization?
What is the primary function of the zona pellucida after fertilization?
What is the primary function of the uterine milk?
What is the primary function of the uterine milk?
What is the primary function of the blastocyst cavity?
What is the primary function of the blastocyst cavity?
What is the primary function of the embryoblast?
What is the primary function of the embryoblast?
What is the primary function of the trophoblast?
What is the primary function of the trophoblast?
What is the primary purpose of the shedding of the zona pellucida?
What is the primary purpose of the shedding of the zona pellucida?
What is the primary event that restores the diploid number of chromosomes?
What is the primary event that restores the diploid number of chromosomes?
Where does the blastocyst usually orient during implantation?
Where does the blastocyst usually orient during implantation?
What process occurs about 7 days after fertilization in relation to the blastocyst?
What process occurs about 7 days after fertilization in relation to the blastocyst?
What happens to the endometrial glands around the time of blastocyst attachment?
What happens to the endometrial glands around the time of blastocyst attachment?
When does the blastocyst attach to the uterine wall following implantation?
When does the blastocyst attach to the uterine wall following implantation?
What is the functional layer of the endometrium known as following implantation?
What is the functional layer of the endometrium known as following implantation?
What is the primary role of the zona pellucida after fertilization?
What is the primary role of the zona pellucida after fertilization?
What happens to the endometrium at the time of blastocyst attachment?
What happens to the endometrium at the time of blastocyst attachment?
What is the correct term for a region in the decidua based on its position relative to the site of the implanted blastocyst?
What is the correct term for a region in the decidua based on its position relative to the site of the implanted blastocyst?
What does the blastocyst secrete before burrowing into the endometrium?
What does the blastocyst secrete before burrowing into the endometrium?
What is happening at this time when the endometrium is in its secretory phase?
What is happening at this time when the endometrium is in its secretory phase?
Implantation occurs about 6 days after fertilization.
Implantation occurs about 6 days after fertilization.
The blastocyst attaches to the uterine wall before secreting enzymes and burrowing into the endometrium.
The blastocyst attaches to the uterine wall before secreting enzymes and burrowing into the endometrium.
The decidua is the name given to the functional layer of the endometrium after implantation.
The decidua is the name given to the functional layer of the endometrium after implantation.
The endometrium becomes more vascularized before the blastocyst attaches more firmly to it.
The endometrium becomes more vascularized before the blastocyst attaches more firmly to it.
The zona pellucida plays a role in preventing implantation at an abnormal site.
The zona pellucida plays a role in preventing implantation at an abnormal site.
The inner cell mass of the blastocyst always orients towards the posterior portion of the uterus during implantation.
The inner cell mass of the blastocyst always orients towards the posterior portion of the uterus during implantation.
The blastocyst remains free within the uterine cavity for about 3 days before attaching to the uterine wall.
The blastocyst remains free within the uterine cavity for about 3 days before attaching to the uterine wall.
Following implantation, different regions of the decidua are named based on their positions relative to the site of the implanted blastocyst.
Following implantation, different regions of the decidua are named based on their positions relative to the site of the implanted blastocyst.
Endometrial glands enlarge before becoming more vascularized around the time of blastocyst attachment.
Endometrial glands enlarge before becoming more vascularized around the time of blastocyst attachment.
The endometrium is in its secretory phase when the blastocyst attaches more firmly to it.
The endometrium is in its secretory phase when the blastocyst attaches more firmly to it.
The blastocyst attaches to the uterine wall before secreting enzymes and burrowing into the endometrium.
The blastocyst attaches to the uterine wall before secreting enzymes and burrowing into the endometrium.
Implantation occurs about 6 days after fertilization.
Implantation occurs about 6 days after fertilization.
The zona pellucida plays a role in preventing implantation at an abnormal site.
The zona pellucida plays a role in preventing implantation at an abnormal site.
The inner cell mass of the blastocyst always orients towards the posterior portion of the uterus during implantation.
The inner cell mass of the blastocyst always orients towards the posterior portion of the uterus during implantation.
The decidua is the name given to the functional layer of the endometrium after implantation.
The decidua is the name given to the functional layer of the endometrium after implantation.
Endometrial glands enlarge before becoming more vascularized around the time of blastocyst attachment.
Endometrial glands enlarge before becoming more vascularized around the time of blastocyst attachment.
The blastocyst remains free within the uterine cavity for about 3 days before attaching to the uterine wall.
The blastocyst remains free within the uterine cavity for about 3 days before attaching to the uterine wall.
Endometrial glands enlarge before secreting enzymes around the time of blastocyst attachment.
Endometrial glands enlarge before secreting enzymes around the time of blastocyst attachment.
What is the significance of the zona pellucida in relation to implantation?
What is the significance of the zona pellucida in relation to implantation?
Describe the orientation of the blastocyst during implantation.
Describe the orientation of the blastocyst during implantation.
What is the functional layer of the endometrium known as following implantation?
What is the functional layer of the endometrium known as following implantation?
When does the blastocyst attach to the uterine wall following implantation?
When does the blastocyst attach to the uterine wall following implantation?
How are different regions of the decidua named after implantation?
How are different regions of the decidua named after implantation?
What is the process where the genetic material from a haploid sperm and a haploid secondary oocyte merges into a single diploid nucleus?
What is the process where the genetic material from a haploid sperm and a haploid secondary oocyte merges into a single diploid nucleus?
Where does fertilization normally occur in humans?
Where does fertilization normally occur in humans?
How does the sperm reach the uterine tube for fertilization?
How does the sperm reach the uterine tube for fertilization?
When does fertilization usually occur in relation to ovulation?
When does fertilization usually occur in relation to ovulation?
What is the term for the study of development from the fertilized egg through the eighth week?
What is the term for the study of development from the fertilized egg through the eighth week?
What is the significance of the acrosome reaction in fertilization?
What is the significance of the acrosome reaction in fertilization?
Describe the process of cleavage in the development of a zygote.
Describe the process of cleavage in the development of a zygote.
What is the role of the trophoblast in the development of the blastocyst?
What is the role of the trophoblast in the development of the blastocyst?
Explain the importance of the blastocyst cavity in embryonic development.
Explain the importance of the blastocyst cavity in embryonic development.
What triggers the hatching of the blastocyst from the zona pellucida?
What triggers the hatching of the blastocyst from the zona pellucida?
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