CH 4: Implantation, gestation and the role of the placenta

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Where does fertilization typically occur?

In the cervix

In the ovary

In the fallopian tube (correct)

In the uterus

What is the structure that forms when the zygote divides by mitosis?

Embryo

Endometrium

Morula (correct)

Blastocyst

What is the process where the embryo embeds itself into the endometrium called?

Fertilization

Ovulation

Gestation

Implantation (correct)

What do the villi develop from after implantation?

Chorion Signup and view all the answers

How many umbilical arteries carry deoxygenated blood from the embryo to the placenta?

Two Signup and view all the answers

What is the total number of chromosomes in a zygote after the fusion of the egg cell and sperm cell?

46 Signup and view all the answers

During which stage does the zygote first divide by mitosis?

Morula stage Signup and view all the answers

Where does implantation of the embryo take place?

Endometrium Signup and view all the answers

What is the outer membrane from which villi develop known as?

Chorion Signup and view all the answers

Which structure connects the placenta to the embryo?

Umbilical cord Signup and view all the answers

What type of blood does the umbilical vein carry from the placenta to the embryo?

Oxygenated blood Signup and view all the answers

Which stage marks the formation of finger-like structures called villi from the chorion?

Implantation stage Signup and view all the answers

What is the first structure formed after fertilization in human development?

Morula Signup and view all the answers

Which structure in human development is responsible for transporting nutrients and waste between mother and embryo?

Placenta Signup and view all the answers

At what stage does the embryo embed itself into the endometrium of the uterus?

Implantation stage Signup and view all the answers

What is the role of the umbilical arteries in the placental development process?

Transporting deoxygenated blood from the embryo to the placenta Signup and view all the answers

What happens during ovulation in the female reproductive system?

Bursting of a mature Graafian follicle and release of an egg cell Signup and view all the answers

What is the significance of the blastocyst stage in fetal development?

Development into an embryo as it moves towards the uterus Signup and view all the answers

During which stage does the embryo embed itself into the endometrium?

Implantation Signup and view all the answers

What occurs during fertilization in human reproduction?

Fusion of an egg cell and a sperm cell to form a zygote Signup and view all the answers

Why is implantation crucial for successful pregnancy?

It establishes a connection between embryo and placenta. Signup and view all the answers

What is a significant outcome of zygote division by mitosis?

Doubling of chromosome number in cells. Signup and view all the answers

What is the main function of the umbilical vein in the placental system?

Transporting nutrients and waste between the mother and the embryo Signup and view all the answers

What is the significance of the chorion in human development?

Developing into finger-like villi for placental formation Signup and view all the answers

Which stage in human development involves the formation of both a morula and a blastocyst?

Development of the Zygote Signup and view all the answers

What happens in the fallopian tube during early human development?

Fertilization of the egg cell by the sperm cell Signup and view all the answers

What role does mitosis play in the development of a zygote?

Divides the zygote into a morula and then a blastocyst Signup and view all the answers