Which of the following is most correct about implantation?
A. Implantation begins 48 hours after ovulation
B. Begins 6 to 7 days after ovulation
C. Begins two weeks after fertilization
D. Implantation occurs in oviduct
B. Begins 6 to 7 days after ovulation
The placenta is fully formed and functional by the end of
A. 1st month
B. 2nd month
C. 3rd month
D. 4th month
D. 3rd month
Where do umbilical arteries originate from?
A. The heart
B. The kidneys
C. Common Iliac Artery
D. Abdominal Artery
C. Common Iliac Artery
Fingers and toes of the embryo is present at what age?
A. Week 3
B. Week 4
C. Week 5
D. Week 6
D. Week 6
As soon as the sex of the male fetus is identified, the testes have already been descended into scrotum
False
Morphogenesis occurs when body parts shapes and forms
True
Gastrulation refers to the stage when blastocyst develops three germ layers
True
The size of morula is about the same size as the original zygote
True
After implantation occurs, the trophoblast becomes chorion
True
The delicate membrane containing the amniotic fluid that bathes the embryo is called
A. Amnnion
B. Chorion
C. Yolk Sac
D. Allantois
A. Amnion
The yolk sac in human contain yolk which supplies nutrients to the growing embryo
False
In humans, the blood vessel of the allantois become the umbilical blood vessels
True
The umbilical artery transports nutrients and oxygen from placenta to the embryo or fetus
False
Umbilical vein transport, transports nutrients and oxygen away from the placenta an back to the embryo or fetus
True
In human embryonic development, the uterus of the pregnant mother is about the size of grapefruit in what stage?
Third month
In seven months of gestation the fetus is normally about 30 cm (12 in ) and about 1.35 kg
True
Urine pregnancy test can be positive as early as
2 weeks
Hair and nail are derived from
Ectoderm
Period in which morula and blastocyst is formed
Cleavage
Period when vast amount of cell migration occurs and the three embryonic germ layers appear
Gastrulation
The outer layer of the blastocyst which later attaches to the uterus
A. Decidua
B. Trophoblast
C. Amnion
D. Inner cell mass
B. Trophoblast