Leydig cells:

1. Are present in seminiferous tubules and secrete androgens

2. Are present in seminiferous tubules and help in maturation of sperms

3. Are present in interstitial space and secrete androgens

4. Are present in interstitial space and help in maturation of sperms

Subtopic:  Seminiferous Tubules & Spermatogenesis |
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Seminal plasma is rich in:

1. Sucrose, calcium and certain enzyme

2. Glucose, sodium and certain enzymes

3. Fructose, calcium and certain enzymes

4. Fructose, sodium and certain enzymes

Subtopic:  Semen and Male Fertility |
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The spermatids are transformed into spermatozoa by the process called:

1. Spermiation

2. Spermatocytogenesis

3. Spermiogenesis

4. Spermatolysis

Subtopic:  Spermiogenesis/Sperm Structure/Hormonal Regulation |
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What causes the onset the puberty in males?

1. Increase in secretion of testosterone by testis

2. Decrease in secretion of testosterone by testis

3. Increase in secretion of GnRH by hypothalamus

4. Decrease in secretion of GnRH by hypothalamus

Subtopic:  Seminiferous Tubules & Spermatogenesis |
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For normal fertility what percent of the sperm in ejaculate must exhibit vigorous motility ?

(1) 20

(2) 30

(3) 40

(4) 60

Subtopic:  Semen and Male Fertility |
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The division of primary oocyte results in:

1. unequal cells a smaller haploid secondary oocyte and a larger diploid polar body

2. unequal cells a larger haploid secondary oocyte and a smaller haploid polar body

3. unequal cells a smaller diploid secondary oocyte and a larger haploid polar body

4. equal cells - a haploid secondary oocyte and a haploid polar body

Subtopic:  Ovary |
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The correct sequence of the various phases of a typical menstrual cycle is:

(1) Menstrual            Follicular            secretory            Ovulatory

(2) Menstrual            Follicular            Ovulatory            secretory

(3) Ovulatory            Follicular            secretory            Menstrual

(4) Menstrual            secretory            Follicular            Ovulatory

Subtopic:  Introduction to Menstrual Cycle: 1 | Introduction to Menstrual Cycle: 2 | Introduction to Menstrual Cycle |
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During pregnancy:

1. All events of menstrual cycle stop and there is no menstruation

2. Events of menstrual cycle continue but there is no menstruation

3. Events of menstrual cycle contInue but there is menstruation only in the first trimester

4. All events of menstrual cycle stop and there is menstruation only in the first trimester

Subtopic:  Menstrual Cycle: Luteal Phase |
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In the absence of fertilization, corpus luteum:

1. Stops secreting progesterone but increases the secretion of estrogen

2. Stops secreting estrogen but increases the secretion of progesterone

3. Increases the secretion of both progesterone and estrogen

4. Degenerates

Subtopic:  Menstrual Cycle: Luteal Phase |
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What ensures that only one sperm can fertilize the ovum?

1. Corona radiata

2. Ground substance around ovum

3. Zona pellucida

4. Acrosome

Subtopic:  Fertilization: Part 2 | Fertilization |
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