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BIOLOGY > UNIT#11 REPRODUCTION > Flashcards

UNIT#11 REPRODUCTION Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

Which one of the following is a diploid structure?

A

Primary Spermatocyte

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2
Q

Which one of the following causes the growth and development of germinal epithelium of the testers?

A

FSH

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3
Q

Production of slightly acidic luid with citrate asa main nutrient source is the function of:

A

Prostate Gland

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4
Q

Structure that undergoes meiosis I is:

A

Primary Spermatocyte

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5
Q

Spermatozoa are formed from spermatids as a result of:

A

Differentiation

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6
Q

Prior to emission and ejaculation, spermatozoa are stored in:

A

Epididymis

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7
Q

Fructose production as a nutritional component for sperms is the function of:

A

Seminal Vesicles

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8
Q

Human sperm and ova show similarities in the following aspects.

A

Both are haploid

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9
Q

All of the following contribute to the formation of semen except:

A

➡Seminal Vesicles❌
➡Cowper’s Gland❌
➡Prostate Gland❌
➡Vas Deferenss✅

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10
Q

The correct sequence of events in spermatogenesis is:

A

Spermatogonia > Primary Spermatocyte > Secondary Spermatocyte > Spermatid > Spermatozoa

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11
Q

All of the following structures are paired except:

A

Prostate Gland

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12
Q

The main function performed by the bulbourethral gland in humans is/are:

A

Neutralization of urethra

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13
Q

How many spermatozoa and ova are produced from 50 primary spermatocytes and 50 primary oocytes?

A

➡200 spermatozoa
➡50 ova

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14
Q

Motile and completely mature cell with flagellum is:

A

Spermatozoa

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15
Q

The first cells produced by the repeated cell division of germinal epithelium of testis are:

A

Spermatogonia

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16
Q

A type of cell in human testis which produces testosterone is called:

A

Interstitial Cells

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17
Q

Which one of the following differentiates directly into mature sperm?

A

Spermatid

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18
Q

What is the location of interstitial cells in testes?

A

Between the seminiferous tubules

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19
Q

Spermatogonia differentiates directly into:

A

Primary Spermatocyte

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20
Q

All of the following are parts of male copulatory organ except:

A

➡Ejaculatory Duct✅
➡Prepuce❌
➡Urethra❌
➡Glans Penis❌

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21
Q

Sperms are nourished and activated through:

A

Semen

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22
Q

A cell contains two copies of each functional gene:

A

Spermatogonium

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23
Q

Each testis is divided into ___ lobules.

A

250-300

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24
Q

Which of the following hormone is responsible for the control of spermatogenesis at a normal rate?

A

Inhibin

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25
Q

During spermatogenesis, the ______, which are haploid cells eventually mature into spermatozoa/mature sperms.

A

Spermatids

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26
Q

Layer of uterus that is under control of estrogen

A

Endometrium

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27
Q

After fertilization, embryo implants itself to the ___ part of uterus.

A

Endometrium

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28
Q

Cervix is blocked by:

A

Plug of mucus

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29
Q

Fertilization of a secondary oocyte by sperm takes place at:

A

Proximal part of uterine tube

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30
Q

The development of secondary oocyte into ovum is compeleted in:

A

Uterine Tube

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31
Q

What will be the effect on the duration of the menstrual cycle if one of the ovaries is removed?

A

Menstrual cycle remains unaffected

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32
Q

Progesterone production within ovaries is accomplished by following structure:

A

Rupruted Follicle

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33
Q

The layer of uterus that is shed with each reproductive cycle is:

A

Endometrium

34
Q

Maximum chances of fertilization in human females exist usually during _____ of the reproductive cycle.

A

14th to 16th day

35
Q

In a menstrual cycle of 45 days, what would be the most probable day of ovulation?

A

31th

36
Q

Endometrium shows maximum thickness during:

A

Secretory Phase

37
Q

Menstruation is the discharge of:

A

➡Blood
➡Mucous
➡Cellular Derbis

38
Q

Menstruation usually continues for:

A

3-7 Days

39
Q

At ovulation egg is released as:

A

Secondary Oocyte

39
Q

In young females, ovulation occurs at ___ days of the reproductive cycle.

A

14th

40
Q

One of the followings is related to the ovary:

A

Luteal Phase

41
Q

At ovulation an egg is released as:

A

Secondary Oocyte

42
Q

One of the followings is related to ovary:

A

Luteal Phase

43
Q

Only Graffian follicle grows with egg. The rest of follicles are destroyed by a process:

A

Follicle atresia

44
Q

Fraternal twins, triplets, and quadruplets in humans occur when:

A

Multiple ovulations occurs

45
Q

Which layer of the uterus undergoes cyclic changes during the menstrual cycle?

A

Endometrium

46
Q

The menstrual cycle starts at puberty. This is termed as:

A

Menarche

47
Q

Ovulation day in a normal menstrual cycle is on day:

A

14th

48
Q

Maintenance of pregnancy is made possible mainly by:

A

Progesterone

49
Q

Complete stop of menstrual cycle is called:

A

Menopause

50
Q

The yellowish glandular structure formed after the release of an egg from the follicle is called:

A

Corpus Luteum

51
Q

On puberty, the development of primary follicles is stimulated by:

A

FSH

52
Q

In females, FSH stimulates the ovary to produce:

A

Estrogen

53
Q

The oocyte is released during ovulation is in:

A

Metaphase II

54
Q

Shortes phase in the menstruation cycle is:

A

Ovulatory Phase

55
Q

The female menstrual cycle is controlled by:

A

Gondotrophin

56
Q

In which phase of the human female menstrual cycle, the endometrium prepares for the implantation of the embryo?

A

Secretory Phase

57
Q

Events of the menstrual cycle are regulated by the:

A

Gonadotrophins

58
Q

Decrease of FSH and increase of estrogen cause the pituitary gland to secrete:

A

Luteinizing Hormone

59
Q

FSH stimulates the production of estrogen hormone which has two targets ___ and ___.

A

➡Uterus
➡Anterior Pituitary

60
Q

Ovulation is suppressed by progesterone via:

A

Inhibition of both FSH & LH

61
Q

Which of the following hormone suppresses ovulation?

A

Progesterone

62
Q

Which of the following hormone causes ovulation?

A

LH

63
Q

Which hormone is released in females in response to FSH from the pituitary gland?

A

LH

64
Q

Which of the following hormone acts on the uterus wall for thickening?

A

Progesterone

65
Q

Which hormonal pair would maintain the endometrium and make it receptive to the implantation of the embryo?

A

➡Estrogen
➡Progesterone

66
Q

Which of the following hormone stimulates the ovulation from the follicle into the oviduct?

A

Luteinizing Hormone

67
Q

The hormone produced at this particular stage in the menstrual cycle shown in the diagram s:

A

Progesterone

68
Q

On the onset of puberty in the females, the pituitary gland releases the:

A

Follicle Stimulating Hormone

69
Q

Secretion of FSH is inhibited by:

A

Estrogen

70
Q

Progesterone is secreted by:

A

Corpus Luteum

71
Q

Which one of the following represents the changes that occur in the ovary and the uterus approximately every 28 days involving ovulation with the breakdown and loss of the lining of the uterus?

A

Menstrual Cycle

72
Q

Which of the following hormones of the pituitary gland regulate the menstrual cycle?

A

➡Follicle Stimulating Hormone
➡Estrogen

73
Q

Oxytocin performs action on:

A

Myometrium

74
Q

It is false about the placenta:

A

Develops during 1st month of pregnancy

75
Q

An egg is fertilized in the laboratory and implanted in the uterus for development. This is called:

A

In vitro fertilization

76
Q

In ____, the mucous membrane of urinogenital tract is mainly affected.

A

Gonorrhea

77
Q

Neisseria gonorrhea causes

A

Gonorrhoeae

78
Q

It affects reproductive organs, eye bone joints, and CNS in patients:

A

Syphilis

79
Q

Sexually transmitted disease caused by a virus and results n genital ulcers

A

Genital Herpes

80
Q

Sertoli cells are under the control of

A

BIOLOGY (13 decks)

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