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3Q Science Reproductive Systems > Male Reproductive System > Flashcards

Male Reproductive System Flashcards

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Biology 101 flashcards
1
Q

Main Reproductive organ of males

A

Testis/Testes

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2
Q

Oval-shaped organs that are about 4 cm long

A

Testes

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3
Q

Suspended within a sac-like structured called “scrotum”.

A

Testes

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4
Q

Responsible for the production and release of sperm and male sex hormones.

A

Testes

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5
Q

Produced by Leydig cells in the testes

A

Testosterone

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6
Q

Responsible for the development of male secondary sex characteristics.

A

Testosterone

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7
Q

Produced in the seminiferous tubules

A

Sperm

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8
Q

Greatly affected by the temperature of the testes.

A

Sperm production

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9
Q

Allows the scrotum to control the temperature of the testes.

A

Testes

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10
Q

A long-coiled tube that stores the sperm cells for at least 18 hours until they reach maturity.

A

Epididymis

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11
Q

A pair of ducts that is capable of pushing the sperm through its length by a series of muscle contractions.

A

Vas Deferens

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12
Q

Extends from the epididymis to the ejaculatory duct.

A

Vas deferens

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13
Q

Whitish fluid that is mainly composed of substances that nourish and protect the sperm.

A

Semen

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14
Q

Extends from the urinary bladder to the penis

A

Urethra

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15
Q

A narrow tube that serves as a passageway for both urine and semen.

A

Urethra

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16
Q

Semen

A

Sperm cells and seminal fluids

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17
Q

Responsible for discharging semen and urine out of the male body.

A

Penis

18
Q

Becomes rigid during sexual excitation.

A

Penis

19
Q

Penis becomes rigid because the erectile tissues become filled with blood.

A

Erection

20
Q

Release of semen from the penis.

A

Ejaculation

21
Q

Occurs during sexual arousal

A

Ejaculation

22
Q

A wave of muscle contractions pushes the sperm from the vas deferens to the prostate gland, where it becomes mixed with seminal fluids.

A

Sexual arousal/Orgasm

23
Q

Develops into Spermatozoa in the testes.

A

Spermatogenesis

24
Q

All immature germ cells in the seminiferous tubules that have not yet undergone meiosis.

A

Spermatogenia

25
Q

Mature sperm cells that are capable of fertilizing an egg.

A

Spermatozoa

26
Q

Where spermatogenesis occurs.
Inner wall of the seminiferous tubules.

A

Germinal Epithelium

27
Q

Phases of spermatogenesis

A

Spermatocytogenesis, meiosis, and spermiogenesis.

28
Q

Occurs when a cell divides to produce two daugther cells that have 2 complete sets of chromosomes as that of their parent cell.

A

Mitosis/Spermatocytogenesis

29
Q

Produces 4 daughter cells that have half the number of chromosomes of their parent cell.

A

Meiosis

30
Q

Complex metamorphosis and occurs for 24 days.

A

Spermiogenesis

31
Q

Haploid nucleus

A

Spermatozoon/head

32
Q

A sac that contains digestive enzymes used for penetrating the cell membrane of the egg cell.

A

Spermatozoon/Acrosome

33
Q

Cell organelles that produce energy that the cell uses for motion

A

Spermatozoon/midpiece=mitochondria

34
Q

Responsible for sperm movement

A

Spermatozoon/tail=long flagellum

35
Q

What hormone does the hypothalamus release that triggers the APG to release gonadotropin into the bloodstream.

A

Gonadotropin-releasing hormone

36
Q

Somatic cells in the testes from which testosterone is produced and at which spermatogonia are embedded respectively.

A

Leydig cells and Sertoli Cells

37
Q

Luteinizing hormone and produces testosterone

A

Leydig cells

38
Q

Follicle-stimulating hormone and regulates and maintain spermatogenesis.

A

Sertoli cells

39
Q

An increase in testosterone levels in the blood stimulates a number of spermatogonia to undergo mitosis.

A

Puberty

40
Q

Carry the cells’ DNA

A

Chromosomes

41
Q

23 pairs of or 46 chromosomes in their nucleus.

A

Diploid

3Q Science Reproductive Systems (3 decks)

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