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Anatomy and Physiology > reproduction > Flashcards

reproduction Flashcards

1
Q

what are the two functions of the male reproductive system?

A
  • production of spermatazoa
  • transmission of spermatazoa to female
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2
Q

what is semen/seminal fluid?

A

a slightly alkaline mixture of sperm cells and secretions from the accessory glands

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3
Q

how many sperm are there per ml of semen?

A

50-150 million sperm per 1ml

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4
Q

what is the volume of semen during a single ejaculation?

A

1.5 - 6.0ml

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5
Q

what sperm count usually presents with fertility problems?

A

10-20 million per 1 ml

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6
Q

what is the function of the testes?

A
  • produces sperm
  • releases male sex hormones, androgen and testosterone
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7
Q

what is the function of the scrotum?

A
  • sac that holds testes outside the body
  • protects testes
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8
Q

what is the function of the seminal vesicles?

A
  • stores sperm and secretes fluids into the sperm ducts
  • fluid provides nutrients to the sperms and make it easier to move
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9
Q

what is the function of the sperm ducts (vas deferens)?

A

carries sperm from testes to urethra

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10
Q

what is the function of the urethra?

A
  • tube that carries urine from the bladder
  • carries sperms from sperm ducts to outside the body
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11
Q

what does the spermatic cord consist of?

A
  • arteries/veins
  • lymphatic vessels and nerves
  • vas deferens
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12
Q

what is the tunica vaginalis?

A
  • outer layer derived from peritoneum
  • forms when testes descend during development
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13
Q

what is the tunica albuginea?

A

dense white fibrous tissue that divides the testes into lobules

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14
Q

what are seminiferous tubules?

A

where spermatogenesis takes place

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15
Q

what do the spermatogenic cells do?

A

produce sperm

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16
Q

what do the sertoli cells do?

A

support spermatogenesis by:
- nourishing spermocytes, spermatids and sperm
- phagocytose excess spermatid cytoplasm
- control movement of spermatogenic cells and the release of sperm into the seminiferous tubules
- produce fluid for sperm transport
- secrete inhibin
- mediate effects of FSH and testosterone

17
Q

what do leydig cells do, and where are they located?

A

located between tubules and secrete testosterone

18
Q

how many lobules do each testis contain?

A

200-300

Anatomy and Physiology (14 decks)

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