Male Reproductive System PDF

 MALE REPRODUCTIVE SYSTEM Elpidio Jr. P. Cadalzo Assistant Professor 1 [email protected] COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  REPRODUCTIVE SYSTEM GONADS/PRIMARY SEX ORGANS ACCESORY ORGANS GAMETES...

 MALE REPRODUCTIVE SYSTEM Elpidio Jr. P. Cadalzo Assistant Professor 1 [email protected] COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  REPRODUCTIVE SYSTEM GONADS/PRIMARY SEX ORGANS ACCESORY ORGANS GAMETES SEX HORMONES SPERM + EGG = ZYGOTE COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  MALE REPRODUCTIVE SYSTEM PRIMARY SEXUAL CHARACTERISTICS PRIMARY SEX EXTERNAL ACCESORY ORGANS ORGAN GENITALIA DUCT GLANDS Testis Scrotum SYSTEMS Penis Seminal Vesicles Epididymis Prostate Vas deferens Bulbourethral Urethra COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  FUNCTIONS OF THE MALE REPRODUCTIVE ORGANS TESTES Synthesize two important products SPERM and TESTOSTERONE COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  FUNCTIONS OF THE MALE REPRODUCTIVE ORGANS TESTES Synthesize two important products SPERM and TESTOSTERONE Seminiferous tubules COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  FUNCTIONS OF THE MALE REPRODUCTIVE ORGANS TESTES Synthesize two important products SPERM and TESTOSTERONE Seminiferous Image Source: Jennings, R. (2017) tubules COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  FUNCTIONS OF THE MALE REPRODUCTIVE ORGANS TESTES Seminiferous tubules Germ cells and Sertoli cells Image Source: Fernando, L. (2007) COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  FUNCTIONS OF THE MALE REPRODUCTIVE ORGANS TESTES Seminiferous tubules Germ cells Image Source: Fernando, L. (2007) SPERMATOGENESIS COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  FUNCTIONS OF THE MALE REPRODUCTIVE ORGANS TESTES Seminiferous tubules Germ cells and Sertoli cells Nurse Cells Image Source: Fernando, L. (2007) Nourishment Testicular fluid Phagocytosis COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  FUNCTIONS OF THE MALE REPRODUCTIVE ORGANS TESTES Synthesize two important products TESTOSTERONE Leydig Image Source: Jennings, R. (2017) (interstitial) cells COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  Ampulla Rete testis Ejaculatory duct Vasa efferentia Urethra Vas deferens Epididymis COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  Journey of the Sperm (Sex Accessory Ducts) EPIDIDYMIS Nourishment and Temporary storage for immature sperm Ability to swim (sperm) During ejaculation, sperm are propelled to the next Epididymis duct COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  Journey of the Sperm (Sex Accessory Ducts) VAS DEFERENS Propel live sperm from Ampulla epididymis into the urethra Terminal end is the ampulla (reservoir for sperm) Vas deferens VASECTOMY COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  Journey of the Sperm (Sex Accessory Ducts) VAS DEFERENS Propel live sperm from epididymis into the urethra Ampulla Terminal end is the ampulla Ejaculatory duct (reservoir for sperm) EJACULATORY DUCT Vas deferens COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  Journey of the Sperm (Sex Accessory Ducts) URETHRA Ampulla URINE and SPERM Prostatic urethra Ejaculatory duct Membranous Urethra urethra Spongy urethra Vas deferens COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  Journey of the Sperm (Sex Accessory Ducts) URETHRA URINE and SPERM Image Source: Susmita, B. and Ranjit, S. (2016) COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  Secretion of Semen (Sex Accessory Glands) Seminal Vesicles Prostate gland SEMINAL PLASMA + SPERM Bulbourethral glands (Cowper’s gland) SEMEN COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  Secretion of Semen (Sex Accessory Glands) SEMINAL VESICLES About 60% of seminal fluid Seminal Vesicles Alkaline, viscous yellow fluid Rich in fructose (sugar) Vitamin C (protection) and prostaglandins (sperm motility) COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  Secretion of Semen (Sex Accessory Glands) PROSTATE GLAND About 13-33% of seminal fluid Alkaline secretion Prostate gland COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  Secretion of Semen (Sex Accessory Glands) BULBOURETHRAL GLAND About 10% of seminal fluid Produces thick alkaline clear mucus - cleansing and lubricant Cowper’s gland PRE-EJACULATE COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  Secretion of Semen (Sex Accessory Glands) SPERM How much sperm is present in the seminal fluid? 2-5 ml (50-150 million sperm per ml) COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  EXTERNAL GENITALIA SCROTUM Maintains temperature necessary for spermatogenesis 3.1oC lower than normal within the body SCROTUM COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  EXTERNAL GENITALIA PENIS Deliver sperm into the female reproductive tract Contains erectile tissue that fills with blood during sexual excitement COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  EXTERNAL GENITALIA PENIS Deliver sperm into the female reproductive tract Contains erectile tissue that fills with blood during sexual excitement - ERECTION COLLEGE OF ARTS & SCIENCES Department of Biological Sciences  Image Source: Marieb and Keller (2022) COLLEGE OF ARTS & SCIENCES Department of Biological Sciences Get in Touch With Us Send us a message or visit us City of Batac, Ilocos Norte, Philippines (63) 77-600-0459 [email protected] Follow us for updates facebook.com/MMSUofficial www.mmsu.edu.ph