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From where do the signals for parturition originate and what does maternal pituitary release for simulating uterine contraction for child birth?

asked Apr 16, 2019 by priyanka.clay6

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In which part of human female reproductive system do the following events take place ? i. Release of 1st polar body ii. Release of 2nd polar body iii. Fertilization iv. Implantation

asked Apr 16, 2019 by priyanka.clay6

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Given below is an incomplete flow chart showing influence of hormones on gametogenesis in males. Observe the flow chart carefully and fill in the blanks A, B and C.

asked Apr 16, 2019 by priyanka.clay6

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The events of the menstrual cycle are represented below. Answer the questions following the

asked Apr 16, 2019 by priyanka.clay6

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When marking a test, a teacher awarded 5 marks for every correct answer and

asked Apr 16, 2019 by pady_1

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when 10 gm of water at 0°c and 10^5n/m^2 pressure is converted into ice of

asked Apr 16, 2019 by gayatriedke01

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Concenteration of ddt is highest in

asked Apr 16, 2019 by sekta.9293

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Find the area bounded by x-axis the curve x^2=4y and the ordinate at the po

asked Apr 16, 2019 by adhikarianil2057

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A simple pendulum having a bob of mass m and charge q and has time period

asked Apr 16, 2019 by prithikaanbarasu

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Failure of fertilization leads to menstruation. Explain.

asked Apr 16, 2019 by priyanka.clay6

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Which cell organelle is present in the neck of the sperm? What is its significance?

asked Apr 16, 2019 by priyanka.clay6

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Why does fertilization take place in fallopian tube and not in uterus?

asked Apr 16, 2019 by priyanka.clay6

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Give reasons for the following : a. The first half of menstrual cycle is called follicular phase as well as proliferative phase. b. The second half of menstrual cycle is called luteal phase as well as secretory phase.

asked Apr 16, 2019 by priyanka.clay6

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Explain why there is no menstrual cycle before puberty, after menopause and during pregnancy.

asked Apr 16, 2019 by priyanka.clay6

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What is gynaecomastia? What is its cause during neonatal period?

asked Apr 16, 2019 by priyanka.clay6

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Blood of mother never mixes up with that of foetus. Yet it nourishes the foetus. How?

asked Apr 16, 2019 by priyanka.clay6

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An ovum allows the entry of only one sperm at a time. Why?

asked Apr 16, 2019 by priyanka.clay6

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Suppose the acrosome of mammalian spermatozoa does not function normally, how would it affect fertilization? Give reasons.

asked Apr 16, 2019 by priyanka.clay6

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Name the important mammary gland secretions that help in resistance of the new born baby.

asked Apr 16, 2019 by priyanka.clay6

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Zygote undergoes mitosis to form 16 celled stage of embryo. What is it known as?

asked Apr 16, 2019 by priyanka.clay6

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Name the outermost layer of the blastocyst.

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What is the main function of Sertoli cells ?

asked Apr 16, 2019 by priyanka.clay6

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Name the site of fertilization in human beings.

asked Apr 16, 2019 by priyanka.clay6

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Name the structures which secrete estrogen.

asked Apr 16, 2019 by priyanka.clay6

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Name the structure which secretes progesterone.

asked Apr 16, 2019 by priyanka.clay6

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What does the head of a sperm consists of ?

asked Apr 16, 2019 by priyanka.clay6

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Name the cells which secrete androgens.

asked Apr 16, 2019 by priyanka.clay6

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In ovary which part becomes copus luteum and name the hormone secreted by corpus luteum.

asked Apr 16, 2019 by priyanka.clay6

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How many sperms will be produced from 10 primary spermatocytes and eggs from 10 primary oocytes?

asked Apr 16, 2019 by priyanka.clay6

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Not all copulations result in pregnancy. Give a reason.

asked Apr 16, 2019 by priyanka.clay6

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Sometimes the doctor injects some medicine into the body of a woman to induce uterine contractions and delivery. What do you think that the doctor has injected?

asked Apr 16, 2019 by priyanka.clay6

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Why is colostrum essential for an infant?

asked Apr 16, 2019 by priyanka.clay6

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Name the developmental stage in humans which gets implanted in uterine wall?

asked Apr 16, 2019 by priyanka.clay6

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How many autosomes and allosomes are found in a single matured human sperm?

asked Apr 16, 2019 by priyanka.clay6

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Why is cleavage in a mammalian zygote referred to as holoblastic?

asked Apr 16, 2019 by priyanka.clay6

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A spermatogonial cell has 30 chromosomes. How many chromosomes will be formed in a) The primary spermatocyte b) a spermatid derived from the cell ?

asked Apr 16, 2019 by priyanka.clay6

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What is the number of chromosomes in the following cells of human male ? a) Spermatids b) Sertoli cells

asked Apr 16, 2019 by priyanka.clay6

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How many sperms are approximately present in an ejaculate of human male? What proportion of them should have normal size and shape?

asked Apr 16, 2019 by priyanka.clay6

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Production of sperms requires low temperature. How is it accomplished in human body?

asked Apr 16, 2019 by priyanka.clay6

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Your classmate complains of headache and cough to the doctor. The doctor confirms that he is suffering from pneumonia and not just common cold. How did the doctor reach such a conclusion? Mention any two precautions to be followed to prevent the spread of this disease.

asked Apr 16, 2019 by priyanka.clay6

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gas in solid colloidal form is known as

asked Apr 16, 2019 by darshinipriya1273

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If A(x1,y1), b(x2,y2) and C(x3,y3) are vertices of an equilateral triangle

asked Apr 16, 2019 by rayanwesha44

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Let u v and w be three vector such that | u|=1 |v|=2 |w|=3;and v and w are

asked Apr 16, 2019 by shamikdas16

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Temperature increase karne pr capacity me kya effect hota hai

asked Apr 16, 2019 by shivamkumar52321

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A conductor of length 1m moving with velocity v perpendicular to the mag

asked Apr 16, 2019 by praneethprani0

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Since the population size is always larger than the sample size, then the s

asked Apr 15, 2019 by ttmbambala

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If u=log v and v(x,y) is a homogeneous function of degrree n,then XUx+Yuy=?

asked Apr 15, 2019 by annapurnadash81

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Wt is thermosettingpolymer

asked Apr 15, 2019 by chakkaarunaasvv

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If the error in measurement of redius of sphere is 2%,then the error in the

asked Apr 15, 2019 by akhilachandrasingh

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Q.Apply Gauss theorem to show that for a charge spherical shell the electri

asked Apr 15, 2019 by lrahulsingha5

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