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Q. No.Which one of the following is the most likely root cause of why menstruation is not taking place in regularly cycling human female?
1.
Fertilization of the ovum
2.
Maintenance of the hypertrophical endometrial lining
3.
Maintenance of high concentration of sex-hormones in the blood stream
4.
Retention of well-developed corpus luteum
Subtopic: Fertilization: Part 1 | Fertilization: Part 2 | Fertilization |
70%
From NCERT
AIPMT - 2009
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Seminal plasma in humans is rich in:
| 1. | fructose, calcium and certain enzymes |
| 2. | fructose and calcium but has no enzymes |
| 3. | glucose and certain enzymes but has no calcium |
| 4. | fructose and certain enzymes but poor in calcium |
Subtopic: Spermiogenesis/Sperm Structure/Hormonal Regulation |
94%
From NCERT
AIPMT - 2009
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The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is:
| 1. | spermatocyte-spermatogonia- spermatid-sperms |
| 2. | spermatogonia-spermatocyte-spermatid-sperms |
| 3. | spermatid-spermatocyte-spermatogonia-sperms |
| 4. | spermatogonia-spermatid-spermatocyte-sperms |
Subtopic: Seminiferous Tubules & Spermatogenesis | Spermiogenesis/Sperm Structure/Hormonal Regulation |
91%
From NCERT
AIPMT - 2009
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Which one of the following is the correct match of the events occurring during the menstrual cycle?
| 1. | Ovulation - LH and FSH attain peak level and sharp fall in the secretion of progesterone |
| 2. | Proliferative phase - Rapid regeneration of myometrium and maturation of Graafian follicle |
| 3. | Development of corpus luteum - Secretory phase and increased secretion of progesterone |
| 4. | Menstruation - Breakdown of myometrium and ovum not fertilized |
Subtopic: Introduction to Menstrual Cycle: 1 | Introduction to Menstrual Cycle: 2 | Introduction to Menstrual Cycle |
63%
From NCERT
AIPMT - 2009
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Which one of the following statements is incorrect about menstruation?
| 1. | During normal menstruation about 40 ml of blood is lost |
| 2. | The menstrual fluid can easily clot |
| 3. | At menopause in the female, there is an especially abrupt increase in gonadotropic hormones |
| 4. | The beginning of the cycle of menstruation is called menarche |
Subtopic: Introduction to Menstrual Cycle: 1 |
70%
AIPMT - 2008
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Extrusion of the second polar body from the egg nucleus occurs:
| 1. | simultaneously with the first cleavage |
| 2. | after entry of sperm but before fertilization |
| 3. | after fertilization |
| 4. | before entry of sperm into the ovum |
Subtopic: Fertilization: Part 1 | Fertilization |
71%
From NCERT
NEET - 2019
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Select the correct sequence for the transport of sperm cells in the male reproductive system:
| 1. | Testis → Epididymis → Vasa efferentia → Vas deferens → Ejaculatory duct → Inguinal canal → Urethra → Urethral meatus |
| 2. | Testis → Epididymis → Vasa efferentia → Rete testis → Inguinal canal → Urethra |
| 3. | Seminiferous tubules → Rete testis → Vasa efferentia → Epididymus → Vas deferens → Ejaculatory duct → Urethra → Urethral meatus |
| 4. | Seminiferous tubules → Vasa efferentia → Epididymis → Inguinal canal → Urethra |
Subtopic: Male Reproductive System |
90%
From NCERT
NEET - 2019
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A change in the amount of yolk and its distribution in the egg will affect:
1. formation of zygote
2. pattern of cleavage
3. number of blastomeres produced
4. fertilization
Subtopic: Embryonic Development till Gastrulation |
69%
AIPMT - 2009
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The part of fallopian tube closest to the ovary is
1. isthmus
2. infundibulum
3. cervix
4. ampulla
Subtopic: Ovary |
88%
From NCERT
AIPMT - 2011
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Which one of the following statements about human sperm is correct?
| 1. | The acrosome has a conical, pointed structure used for piercing and penetrating the egg, resulting in fertilization. |
| 2. | The sperm lysins in the acrosome dissolve the egg envelope, facilitating fertilization. |
| 3. | The acrosome serves as a sensory structure, leading the sperm towards the ovum. |
| 4. | The acrosome serves no particular function. |
Subtopic: Spermiogenesis/Sperm Structure/Hormonal Regulation |
62%
From NCERT
AIPMT - 2010
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