Human Development MCQs :-
1. Circulation through the chorionic vessels begins early in the ninth week of development, when the heart starts beating.
False
True
2. Pre-embryonic development begins at fertilization and continues through cleavage and implantation.
True
False
3. Usually five hours after delivery, the placental stage ends with the ejection of the placenta, or afterbirth.
True
False
4. What percentage of deliveries are breech births?
8-10 percent
5-6 percent
11-14 percent
3-4 percent
5. The dilation stage begins with the onset of true labor, as the cervix dilates and the fetus begins to move down the cervical canal.
True
False
6. At what age does the fetus have a basic heart structure, major blood vessels, lymph nodes and ducts?
2 months
6 months
8 months
4 months
7. Typical heart rates of 120-140 beats per minute and respiratory rates of 30 breaths per minute are normal in neonates, and considerably higher than those of adults.
False
True
8. The formation of specialized cell types during human development is called:
Segmentation
Differentiation
Conception
Fertilization
9. The chances of a premature newborn’s survival are directly related to body weight at delivery.
True
False
10. Normal fertilization occurs in the ampulla of the uterine tube, usually with a day of ovulation.
True
False
11. The term embryology refers to the study of the developmental events that occur during postnatal development.
False
True
12. When does the fetus look distinctively human?
Fourth trimester
First trimester
Second trimester
Third trimester
13. Prenatal development occurs in the period from conception to delivery.
True
False
14. A severe structural abnormality, present at birth, that affects mayor systems is:
Ectopic pregnancy
Breech birth
Congenital malformation
Abruption placenta
15. The blast cyst provides the link between maternal and embryonic systems: it provides respiratory and nutritional support essential for prenatal development.
True
False
16. The hormone that is the basis for pregnancy tests is:
LH
Human chorionic gonadotropin (HCG)
Human placental lactose (HPL)
Progesterone
17. The lungs at birth are already tilled with air.
True
False
18. What is the typical heart rates br neonates?
80 – 100 beats per minute
120 – 140 beats per minute
60 – 80 beats per minute
110-130 beats per minute
19. Of the 200 million spermatozoa introduced into the vagina from a typical ejaculate, how many enter the uterine tube?
1 million
50,000
500,000
10,000
100,000
20. What would be the effect of a direct connection between the blood supply of the chorionic villi and the deciduas basal is of the placenta?
The fetus would grow faster than usual
Fetal growth would be retarded
A possible incompatibility reaction that could damage or kill the fetus
Normal development, as this is usually what occurs
21. A delivery wherein the legs or buttocks of the fetus enter the vaginal canal first is:
Breech birth
Ectopic pregnancy
Congenital malformation
Abruption placenta
22. What is the process where the blood vessels form around the edges of the blast cyst?
Implantahon
Cleavage
Placenta ion
Embryogenesis
23. The sequence of cell divisions that begins immediately after fertilization and ends at the first contact with the uterine wall is:
Cleavage
Placenta ion
Embryogenesis
Implantation
24. Several spermatozoa are required to accomplish fertilization and activate the oocyte.
False
True