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Karnataka Board PUCPUC Science 2nd PUC Class 12

Name the function of the following: Endometrium

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Question

Name the function of the following:

Endometrium

Short Answer
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Solution

It is the uterine mucous membrane, which thickens and becomes more glandular as the menstrual cycle progresses and has an enhanced blood supply. If embryo implantation does not occur, the endometrium undergoes a decline and loses most of its tissue during menstruation. If a pregnancy is confirmed, the endometrium develops into the decidua, which is shed after birth.

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Chapter 2: Human Reproduction - EXERCISES [Page 40]

APPEARS IN

NCERT Biology [English] Class 12
Chapter 2 Human Reproduction
EXERCISES | Q 15. (b) | Page 40
Nootan Biology [English] Class 12 ISC
Chapter 2 Human Reproduction
NCERT EXERCISES | Q 15. (b) | Page 116

RELATED QUESTIONS

Which part of the human body produces Ova?


Choose the odd one in each of the following: 

Ovary; fallopian tube; ureter; uterus 


Rewrite the terms in the correct order so as to be in a logical sequence. 

Graafian follicle, ostium, uterus, fallopian tube.

 


Sketch the labelled diagram.

Human female reproductive system.


Give appropriate term of the following:
The process of fusion of ovum and sperm.


Name the following:
The parts of the ovary containing mature ovum.


Give the functions of the following:
Penis


Given here is a section of the female reproductive system of human beings.

Name the part where fertilisation occurs in human beings.


Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:

The cilia lining the oviduct funnel, push the released ovum into the uterus.


Multiple Choice Question:

Corpus luteum in mammals occurs in


Estrogen is secreted by ______


Womb is used to refer ______.


Development of mammary glands is controlled by ____________.


Penis is homologous to ____________.


Identify the layer that makes up the corona radiate.


Which of the following statements regarding human reproduction is INCORRECT?


During which process is the egg released from the Graafian follicle?


Which of the following is ectodermal in origin?

(i) Heart
(ii) Sweat glands
(iii) Adrenal medulla
(iv) Middle ear
(v) Urinary bladder
(vi) Dermis of skin

Which one the following is a part of external genitalia of a female human being?


The embryo in humans gets nutrition from the mother’s blood with the help of a special tissue called ______ 


The fertilization of the human egg by the sperm takes place in ______  


The ability to reproduce is lost in a female after ______ 


Read the following and answer from given below:

During copulation, semen is released by the penis into the vegina. The motile sperms swim rapidly, fuse with the ovum in the ampullary region, resulting in fertilization. The haploid nucleus of sperm fuses with that of the ovum to form a diploid zygote.

Select the correct sequence of various physical and chemical events that take place during fertilisation.

P. Fusion of cortical granules with the plasma membrane of secondary oocyte.

Q. Formation of fertilization cone to receive sperm.

R. Release of sperm lysin from acrosome.

S. Mixing up of chromosomes of a sperm and an ovum.


State whether the following statement is True or False. If false, correct the statement:

In adult human females, a single mature egg is released into an oviduct every month.


Match the following:

Ovaries Bean shape
Fallopian tubes Almond shape
Uterus Funnel – shape
Kidney pear-shaped

The part of Fallopian tube closest to the ovary is ______.


Given below is a certain situation. Analyze and describe its possible impact on a person:

Egg is not fertilised in a human female.


Given below are the structural details of a human mammary gland:

  1. The glandular tissue in the breast has 15-20 clusters. of cells called alveoli.
  2. The milk is stored in the lumen of the alveoli.
  3. The alveoli join to form the mammary ducts.
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Choose the option that gives the correct detail of the human mammary gland.


Complete the analogy with respect to reproductive system.

Male : Penis : : Female : ______.


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