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Anatomy > Male Reproduction System > Flashcards

Male Reproduction System Flashcards

1
Q

primary sex organs

A
  • gonads or testes
  • produces gametes
  • secrete testosterone
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2
Q

secondary sex organs

A

-aid in formation of semen and transport of sperm

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3
Q

testes location

A
  • outside pelvic cavity

- within scrotal sac (scrotum)

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4
Q

testes function

A

-production of sperm & testosterone

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5
Q

testes structure

A
  • small, oval structure surrounded by CT

- contains tubules or ducts which transport sperm

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6
Q

seminiferous tubules

A
  • functional unit

- site of sperm production

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7
Q

seminiferous tubules: spermatogonia

A

-developing sperm in various stages of maturation

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8
Q

seminiferous tubules: sertoli cells

A
  • line tubules

- produce nutrients required to maintain developing sperm

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9
Q

interstitial cells of leydig

A
  • endocrine cells

- produce & secrete testosterone

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10
Q

mature sperm structure

A
  • head, body, tail

- 23 pairs chromosomes (22 autosomes, 1 sex chromosome)

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11
Q

mature sperm structure: autosome

A
  • located at tip of head

- contains enzymes which help penetrate ovum

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12
Q

spermatic cord contents

A
  • vas deferens
  • testicular artery
  • pampiniform plexus of veins
  • nerve
  • lymphatics
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13
Q

epididymis location**

A

-attached to the posterior surface of the testes

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14
Q

epididymis structure

A
  • coiled tube

- contains millions of sperm in their final stage of development

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15
Q

epididymis function

A
  • stores sperm

- transports sperm from the testes to the ductus deferens

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16
Q

ductus deferens location

A
  • aka vas deferens

- passes from scrotal sac into pelvic cavity

17
Q

ductus deferens structure

A

-fibromuscular tube

18
Q

ductus deferens function

A

-transports sperm from the epididymus to the ejaculatory duct

19
Q

ejactulatory duct location

A
  • begins on posterior side of prostate gland

- passes through prostate gland to join prostate urethra

20
Q

seminal vesicles location

A

-posterior to & near base of bladder

21
Q

seminal vesicles structure

A
  • glandular organ which contains smooth muscle

- contracts to release contents

22
Q

seminal vesicles function

A
  • produces an alkaline secretion rich in frutose(used to provide energy for sperm)
  • secretes prostaglandins (causes uterine contractions to help sperm move)
23
Q

prostate gland location

A
  • inferior to neck of bladder

- surrounds the first portion of the urethra

24
Q

prostate gland structure

A

-glands embedded in Ct & smooth muscle

25
Q

prostate gland function

A
  • secretes and alkaline fluid which contains enzymes

- helps to neutralize acidic environment of vagina

26
Q

bulbourethral glands location

A

-muscularis layer of te pelvic floor

27
Q

bulbourethral glands structure

A

-small glands with a fuct opening into the urethra

28
Q

bulbourethral glands function

A

-secrete a mucous-like fluid which lubricates the urethra

29
Q

scrotum location

A

-posterior to penis

30
Q

scrotum structure

A
  • sac-like structure covered by fascia (CT) and skin
  • contains muscle fibers
  • cremaster muscle: contracts to elevate testes
31
Q

scrotum function

A
  • supports & protects testes

- helps to regulate the position of the testes & regulate their temp

32
Q

scrotum function: cold

A

-cremaster muscle contracts & pulls testes up towards warm body wall

33
Q

scrotum function: warm

A
  • skin is more flaccid & loose

- cremaster muscles relax allowing testes to be further away from the body wall

34
Q

penis structure: shaft

A
  • major part
  • contains highly vascularized tissue
  • composed of sponge-like erectile tissue
35
Q

penis structure: glands

A
  • expanded, terminal portion

- foreskin: retractable portion of skin (removed during circumcision)

36
Q

penis structure: penile urethra

A

-passageway for both sperm & urine

37
Q

erection

A
  • occurs when vascular spaces becomes engorged w blood & blood is not permitted to drain due to parasympathetic effect
  • erectile tissue becomes rigid
38
Q

ejaculation

A
  • under sympathetic control

- affects smooth muscle of the glands & blood vessels of the reproductive system

Anatomy (41 decks)

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