Male Reproductive System Study Guide

1
Male Reproductive System Study Guide
2
Introduction 1

• A period of sexual development during which males
  and females become sexually mature and able to
  produce children.
• Between ages 10-15, a males hypothalamus gland
  tells the pituitary gland to send hormones to the
  two testes.

3
2 Name the Changes that occur to a boy during
puberty
Puberty

1. Facial/Body Hair
2. Deep voice
3. Larger muscles
4. Longer bones
5. Sperm production

4
Puberty
5
Structure and Function

• 3. The ______organs store, nourish, and transport
  sperm cells
• Internal

6
External

• 4. The _____organs produce, store, and release
  sperm.

7
Testes/Testicles

• 5. Very early in prenatal life, special sex cells
  are set aside from other body cells. These
  organize into a group of cells known as ________
  which eventually develop in the male testes
• Gonads

8
Testes/Testicles

• 6. The testes have two functions. They produce
  the male sex hormone___________?
• Testosterone
• This hormone is responsible for maturing the
  reproductive organs and for the development of a
  males secondary sexual characteristics
• Facial hair
• Body hair
• Deep voice, etc.

9
Testes/Testicles

• 7. The testes also produce ________.
• SpermMale sex cell

10
(No Transcript)
11
(No Transcript)
12
(No Transcript)
13
(No Transcript)
14
Scrotum

• 8. The testes hang outside the body within a sac
  called the ___________
• Scrotum

15
(No Transcript)
16
Scrotum

• 9. The temperature in the scrotum must be
  ________ than the body temperature for sperm to
  form and survive.
• Lower
• Muscles in the scrotum move the testes closer or
  farther away from the body to maintain this
  temperature.

17
Epididymis

• 10. This is located on the ______of each testis
• Back
• 11. Sperm are stored here for ____to ____ days.
• 2-4

18
(No Transcript)
19
Vas Deferens

• 12. This serves as a tube that leads from he
  epididymis to the urethra.

20
(No Transcript)
21
Vas Deferens

• Vasectomy a form of male sterilization where the
  vas deferens are cut and tied to prevent sperm
  from meeting the egg.
• It is a permanent form of birth control.

22
(No Transcript)
23
Urethra

• 14. The urethra is a tube that carries_______ and
  _______ from the body.
• Urine and Sperm
• It is a passageway located within the penis.
• During erection, the bladder is closed so that no
  urine will be eliminated during ejaculation.

24
(No Transcript)
25
Seminal vesicle

• 15. This organ creates a fluid that provides
  ________ for active sperm.
• Energy (sugar) nutrient
• IT makes up the majority of semen

26
Cowpers Gland(bulbourethral gland)

• Two Small pea shaped structures located on either
  side of the mans urethra and beneath the
  prostate gland

27
(No Transcript)
28
Cowpers Gland

• 16. The fluid from this organ________ the
  urethra.
• Lubricates (wets)
• It is sometimes called ________fluid.
• Precoital
• It__________ the acid of the urethra.
• Neutralizes (eliminates)

29
17.Prostate Gland

• The Fluid from the prostate gland_______the sperm
  as it travels in the female reproductive tract.
• PROTECTS
• It neutralizes he acid of the vagina. It is
  also a frequent cancer site in the older male.
• 2nd most common

30
(No Transcript)
31
(No Transcript)
32
Penis

• 18. The penis is the external sex organ through
  which sperm leaves the body.
• 19. The tip of the penis is known as the _______.
  
• Glans
• It is covered by a ___________.
• Foreskin

33
(No Transcript)
34
Penis

• ____________ is the removal of the foreskin.
• Circumcision
• Two Reasons to have it done?
• 1. Religious(jewish faith)
• 2. Health
• 3. Cultural

35
(No Transcript)
36
(No Transcript)
37
(No Transcript)
38
21. Bladder

• This organ stores urine.
• It receives urine from the kidneys through the
  ureter tube.

39
(No Transcript)
40
(No Transcript)
41
Other Terminology.

• 22. A condition in which the penis becomes larger
  and firm?
• Erection

42
23.

• A fluid that is released from the erect penis
  during ejaculation.
• Semen
• It is made up of
• Sperm
• Prostate Gland Fluid
• Seminal Vesicle Fluid

43

• ??? ejection of semen from the penis??
• Ejaculation

44
(No Transcript)
45

• 25. An ejaculation contains about 360-400
  million sperm cells.
• 26. Once a male reaches puberty, millions of
  sperm are produced daily.

46

• 27._________ an erection and ejaculation during
  sleep.
• Noctural Emission
• It is also called a ______?
• Wet dream

47

• 28. The lifespan of sperm cell once it leaves the
  penis is__________?
• 72 hours

48

• 29. There are two sperm types. They are labeled
  as ______ and _______.
• X and Y
• If an X sperm cell unites with the egg, a ______
  baby will occur.
• Girl
• If a Y sperm cell unites with the egg, a BOY baby
  will occur.

49

• 30. The union of sperm and egg in order for
  reproduction to occur?
• Also called conception.
• Fertilization

50
(No Transcript)
51

• 31. When a person is unable to reproduce.
• Some of the causes are environment, stress,
  drugs, mumps, etc
• Sterility