Q. No.The fluid-filled cavities near the embryonic ectoderm and the embryonic endoderm are respectively:
1. amniotic cavity, blastocele
2. amniotic cavity, yolk sac
3. blastocele, amniotic cavity
4. yolk sac, amniotic cavity
1. amniotic cavity, blastocele
2. amniotic cavity, yolk sac
3. blastocele, amniotic cavity
4. yolk sac, amniotic cavity
The first form of milk produced by the mammary glands of mammals immediately following delivery of the newborn is called:
| 1. | prolactin | 2. | progesterone |
| 3. | milk | 4. | colostrum |
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The uterine contractions [labor pains] are initiated due to:
1. An increase in estrogen secretion
2. A decrease in oxytocin secretion
3. An increase in the progesterone: estrogen ratio
4. A decrease in FSH and LH
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Fructose and prostaglandins are contributed to the seminal plasma by:
| 1. | epididymis | 2. | seminal vesicles |
| 3. | vas deferens | 4. | prostate gland |
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Polar bodies:
| 1. | serve both as a dumping ground for extra sets of chromosomes and ensure that the ovum will have most of the cytoplasm. |
| 2. | get rid of of defective sets of chromosomes. |
| 3. | have no function. |
| 4. | prevent twin pregnancies. |
The term used to describe the changes that happen to the sperm inside the female reproductive tract that allows the sperm to become capable of fertilizing the egg is:
| 1. | spermiogenesis | 2. | the acrosomal reaction |
| 3. | capacitation | 4. | implantation |
Identify the correct chronological order of the events given:
| 1. | acrosomal reaction, decidual reaction, capacitation, implantation, cleavage |
| 2. | acrosomal reaction, capacitation, cleavage, decidual reaction, implantation |
| 3. | capacitation, implantation, cleavage, acrosomal reaction, decidual reaction |
| 4. | capacitation, acrosomal reaction, cleavage, implantation, decidual reaction |
Oxygen rich blood and nutrients are transported to the fetus by:
| 1. | inferior vena cava | 2. | umbilical vein |
| 3. | umbilical artery | 4. | hepatic portal vein |
Erythropoiesis in the earliest days of gestation is the function of:
| 1. | yolk sac | 2. | chorion |
| 3. | fetal bone marrow | 4. | amnion |
A second pregnancy during an ongoing pregnancy is prevented by:
| 1. | Estrogen | 2. | HPL |
| 3. | progesterone | 4. | HCG |
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