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Human Reproduction

Question
CBSEENBI12002398
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Identify the human developmental stage shown below as well as the related right palce of its occurrence in a normal pregnant woman, and select the right option for the two together. 

  • Developmental Stage Site of Occurrence
    Late morula Middle part of fallopian tube
  • Developmental Stage Site of Occurrence
    Blastula End part of fallopian tube
  • Developmental Stage Site of Occurrence
    Blastocyst Uterine wall
  • Developmental Stage Site of Occurrence
    8-celled morula Starting point of fallopian tube

Solution

C.

Developmental Stage Site of Occurrence
Blastocyst Uterine wall

An embryo with about 64-cells and a cavity called blastocoel is known as blastocyst. It is composed of an outer envelope of cells the trophoblast. Implantation is attachement of blastocyst to the uterine wall. This occurs 7-days after fertilization. It develops from 8-celled morula to 16-celled morula and then 64-celled stage. The blastocyst sinks into a pit formed in the endometrium and gets completely burried in the endometrium. 

Some More Questions From Human Reproduction Chapter

Seminiferous tubules open into vasa efferentia through :

Polar bodies are produced during the process :

In 28 days woman's menstrual cycle, ovulation occurs on :

Scrotum communicates with abdominal cavity through :

How many spermatozoa or sperms are present in human ejaculate ?

Acrosome is a part of:

Humans are :

Menstrual cycle occurs in :

Spermatozoa are produced in the .................. tubules of testes while ova are formed in the .................. of ovaries.

Corpus luteum secretes..................while Leydig cells secrete..................

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