1. _ICHTHUS_

2. _ICHTHUS_

3. _ICHTHUS_

4. QUESTIONS

5. QUESTIONS
Are the learning activities congruent
with the stated objectives?
Are the materials and methods
appropriate for the objectives set?
Does the teacher have the skill to
implement the activities or use the
strategy?
Does the teacher utilize the various
ways of doing to complement the
learning styles of the students?

6. QUESTION
Are there activities provided to address
individual differences?
Do the activities provide maximum
learning experiences?
Do the activities motivate the learners
to do more and harness their potential?
Do the activities utilize multiple
sensory abilities of the learners?
Do the activities address multiple
intelligences of the learners?

7. PA R T S O F T H E M A L E R E P R O D U C T I V E S Y S T E M
EXTERNAL Parts Of THE
MALE REPRODUCTIVE SYSTEM

8. PA R T S O F T H E M A L E R E P R O D U C T I V E S Y S T E M
SCROTUM
Skin
Covers the gonads
and other accessory
organs.
Regulates the
temperature essential
for the sperm (3 C)

9. PA R T S O F T H E M A L E R E P R O D U C T I V E S Y S T E M
PENIS
Composed of
spongy erectie tissues
Erectile organ for Shaft(body)
male. glans penis
Sperm pathway (head)
Corpora
cavernosa
Corpora
spongiosum

10. PA R T S O F T H E M A L E R E P R O D U C T I V E S Y S T E M
TESTES
located in the scrotum,
outside the body cavity.
This keeps testicular
temperature cooler than
the body cavity.

11. PA R T S O F T H E M A L E R E P R O D U C T I V E S Y S T E M
TESTES
Male gonads
seminiferous tubules-
form sperm
Leydig cells
(interstitial cells)-
produce androgens

12. PA R T S O F T H E M A L E R E P R O D U C T I V E S Y S T E M
TESTES
Septa
250-300 lobules
Seminiferous
tubules

13. DU

14. DUCTS
EPIDIDYMIS
DUCTUS DEFERENS (VAS
DEFERENS)
URETHRA (EJACULATORY
DUCT)

15. DUCTS
EPIDIDYMIS
Between seminiferous tubules
and vas deferens
~6 m long
Located in scrotum

16. DUCTS
EPIDIDYMIS
Pseudostratified columnar
epithelium
With stereocilia (long
microvilli)
Smooth muscle
Sperm mature and stored

17. DUCTS
Ductus deferens / Vas deferens
From scrotum to pelvis
Forms ejaculatory duct with
seminal vesicle duct
Empties into prostatic urethra
Thick muscularis
Propels sperm during
ejaculation

18. DUCTS
Ductus deferens / Vas deferens
Pseudostratified epithelium
Lamina propria
Muscularis
Inner longitudinal
Middle circular
Outer longitudinal
MICROSCOPIC VIEW

19. DUCTS
URETHRA / Ejaculatory duct
Shared with urinary system
Prostatic urethra
Membranous urethra
Spongy (penile) urethra
Sperm pathway

20. ACCESSORY GLANDS

21. ACCESSORY GLANDS
SEMINAL VESICLE
60% of semen
Fructose to nourish sperm
Also contains asorbic acid,
coagulating enzyme, prostaglandin
Seminal Vesicle

22. ACCESSORY GLANDS
SEMINAL VESICLE
A pair of glands that secrete a liquid
component of semen into the vas
deferens.
Secretion is alkaline
Seminal Vesicle

23. ACCESSORY GLANDS
PROSTATE GLAND
Surrounds prostatic urethra
30% of semen
Supports sperm

24. ACCESSORY GLANDS
PROSTATE GLAND
Secretion- slightly alkaline fluid that
activates the sperm and prevents
them from sticking together
citrate, calcium, phosphate ions
clotting enzymes
serine protease

25. ACCESSORY GLANDS
Bulbourethral Gland / COWPER’s
Gland
Function- It acts to wash residual
urine out of the urethra when
ejaculating semen-- raises pH;
neutralizes acidity of urine.
paired glands that lie beneath the
prostate Bulbourethral gland

26. ACCESSORY GLANDS
Bulbourethral Gland / COWPER’s
Gland
Secretion- a thick, clear alkaline
mucous that drains into the
membranous urethra.
pre-ejaculatory fluid
mucus
acid buffers
Bulbourethral gland

27. EMINAL FLUID

28. SEMINAL FLUID
WHAT is SEMINAL FLUID?
thick, yellowish, and alkaline.
It contains mucus, fructose,
a coagulating enzyme,
ascorbic acid, and
prostaglandins.

29. SEMINAL FLUID
WHAT is SEMINAL FLUID?
Sperm (10%) + accessory gland
secretions (90%)
2 – 5 ml per ejaculate with 50 – 120
million sperm per ml

30. EJACULATION

31. E J A C U L AT I O N
What happens at
ejaculation?
propels sperm from the
epididymis to the vas deferens.
The vas deferens run from the
scrotum and behind the urinary
bladder.
The ejaculatory ducts open into
the urethra.

32. E J A C U L AT I O N
What is ejaculation?
A male usually ejaculates about 2
– 5 mL of semen; each milliliter
containing about 50 – 130 million
sperm.

33. E J A C U L AT I O N
What happens during
ejaculation?
Sympathetic activation
Peristaltic contraction of smooth
muscles in ducts and glands -
ejaculation
Constriction of arteries
 blood pressure in erectile bodies

34. ERECT

35. ERECTION
Sexual excitement
(parasympathetic)
 blood flow to erectile bodies
Squeezes veins shut
 blood pressure in erectile bodies

36. ERECTION
Erectile tissues
corpora cavernosa (2)
corpus spongiosum
Erectile physiology
dilation of deep artery
lacunae fill with blood
erectile tissues expand
 and harden
penile veins pinched off

37. SPERMATOGENE

38. SPERMATOGENESIS

39. SPERMATOGENESIS

40. SPERMATOGENESIS
MATURE SPERM CELL

41. SPERMATOGENESIS
MATURE SPERM CELL
head
acrosome
midpiece
nucleus
tail
mitochondria
flagellum
SEMINIFEROUS
TUBULES
SEM of sperm in lumen of seminiferous tubule

42. SPERMATOGENESIS
Spermatogonia
On basal lamina
Mitosis
Primary spermatocytes
1st meiotic division
Secondary spermatocytes
2nd meiotic division
Spermatid
Haploid
4 from each 1
spermatocyte

43. SPERMATOGENESIS
MATURITY AND DEVELOPMENT

44. SPERMATOGENESIS
Hormones Involved in Spermatogenesis
• Gonadotropin Releasing
Hormone (GnRH)
• Follicle Stimulating Hormone
(FSH)
• Interstitial Cell Stimulating
Hormone (ICSH=LH)
• Testosterone
• Inhibin
• ABP

45. SPERMATOGENESIS
300 million sperm/day
Spermatogenesis begins
at puberty

46. HORMO

47. HORMONES
hypothalamic Gn-RF
negative anterior pituitary gland negative
feedback feedback
follicle-stimulating hormone luteinizing hormone
testes
sustentacular cells spermatogonia interstitial cells
prepares for spermiogenesis enter spermatogenesis testosterone secretion
inhibin secretion
development of primary male sex characteristics
(before birth)
development of secondary male sex characteristics
(beginning at puberty)
1. enlargement of sex organs
2. activation of accessory organs
3. beginning of sexual behavior
4. increased protein anabolism
5. required for spermatogenesis and spermiogenesis

48. HORMONES
Hormonal Control
Hypothalamus
GnRH
Anterior Pituitary
ICSH FSH

49. HORMONES
Hormonal Control
ICSH
Interstitial Cells
Testosterone

50. HORMONES
Hormonal Control
FSH Testosterone
Sertoli Cells
Spermatogenesis Inhibin

51. HORMONES
Hormonal Control
Inhibin
Acts on anterior pituitary
Inhibits FSH production
Testosterone
Acts on hypothalamus
Inhibits GnRH production

52. HORMONES
EFFECTS OF TESTOSTERONE
muscle and bone growth
facial and pubic hair growth
thickening of vocal cords
growth of pharyngeal cartilage
hair follicle effects
stimulates sebaceous glands
Increased BMR

53. _ICHTHUS_

54. CONTRACEPTION
VASECTOMY

55. CONTRACEPTION
CONDOMS

56. _ICHTHUS_