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    Powerpoint edited Powerpoint edited Presentation Transcript

    • _ICHTHUS_
    • _ICHTHUS_
    • _ICHTHUS_
    • QUESTIONS
    • QUESTIONSAre the learning activities congruentwith the stated objectives?Are the materials and methodsappropriate for the objectives set?Does the teacher have the skill toimplement the activities or use thestrategy?Does the teacher utilize the variousways of doing to complement thelearning styles of the students?
    • QUESTIONAre there activities provided to addressindividual differences?Do the activities provide maximumlearning experiences?Do the activities motivate the learnersto do more and harness their potential?Do the activities utilize multiplesensory abilities of the learners?Do the activities address multipleintelligences of the learners?
    • 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 THEMALE REPRODUCTIVE SYSTEM
    • 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 gonadsand other accessoryorgans.Regulates thetemperature essentialfor the sperm (3 C)
    • 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 ofspongy erectie tissuesErectile organ for Shaft(body)male. glans penisSperm pathway (head) Corpora cavernosa Corpora spongiosum
    • 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 testiculartemperature cooler thanthe body cavity.
    • 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
    • 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
    • DU
    • DUCTSEPIDIDYMISDUCTUS DEFERENS (VASDEFERENS)URETHRA (EJACULATORYDUCT)
    • DUCTS EPIDIDYMISBetween seminiferous tubulesand vas deferens~6 m longLocated in scrotum
    • DUCTS EPIDIDYMISPseudostratified columnarepithelium With stereocilia (long microvilli) Smooth muscle Sperm mature and stored
    • DUCTS Ductus deferens / Vas deferensFrom scrotum to pelvisForms ejaculatory duct withseminal vesicle ductEmpties into prostatic urethraThick muscularisPropels sperm duringejaculation
    • DUCTS Ductus deferens / Vas deferensPseudostratified epitheliumLamina propriaMuscularis Inner longitudinal Middle circular Outer longitudinal MICROSCOPIC VIEW
    • DUCTS URETHRA / Ejaculatory ductShared with urinary systemProstatic urethraMembranous urethraSpongy (penile) urethraSperm pathway
    • ACCESSORY GLANDS
    • ACCESSORY GLANDS SEMINAL VESICLE60% of semenFructose to nourish spermAlso contains asorbic acid,coagulating enzyme, prostaglandinSeminal Vesicle
    • ACCESSORY GLANDS SEMINAL VESICLEA pair of glands that secrete a liquid component of semen into the vas deferens.Secretion is alkaline Seminal Vesicle
    • ACCESSORY GLANDS PROSTATE GLANDSurrounds prostatic urethra30% of semenSupports sperm
    • ACCESSORY GLANDS PROSTATE GLANDSecretion- slightly alkaline fluid thatactivates the sperm and preventsthem from sticking togethercitrate, calcium, phosphate ionsclotting enzymesserine protease
    • ACCESSORY GLANDS Bulbourethral Gland / COWPER’s GlandFunction- It acts to wash residualurine out of the urethra whenejaculating semen-- raises pH;neutralizes acidity of urine.paired glands that lie beneath theprostate Bulbourethral gland
    • ACCESSORY GLANDSBulbourethral Gland / COWPER’sGlandSecretion- a thick, clear alkalinemucous that drains into themembranous urethra.pre-ejaculatory fluidmucusacid buffers Bulbourethral gland
    • EMINAL FLUID
    • SEMINAL FLUIDWHAT is SEMINAL FLUID? thick, yellowish, and alkaline. It contains mucus, fructose, a coagulating enzyme, ascorbic acid, and prostaglandins.
    • SEMINAL FLUIDWHAT is SEMINAL FLUID?Sperm (10%) + accessory glandsecretions (90%)2 – 5 ml per ejaculate with 50 – 120million sperm per ml
    • EJACULATION
    • E J A C U L AT I O N What happens at ejaculation?propels sperm from theepididymis to the vas deferens.The vas deferens run from thescrotum and behind the urinarybladder.The ejaculatory ducts open intothe urethra.
    • E J A C U L AT I O N What is ejaculation?A male usually ejaculates about 2– 5 mL of semen; each millilitercontaining about 50 – 130 millionsperm.
    • E J A C U L AT I O N What happens during ejaculation?Sympathetic activationPeristaltic contraction of smoothmuscles in ducts and glands -ejaculationConstriction of arteries blood pressure in erectile bodies
    • ERECT
    • ERECTIONSexual excitement(parasympathetic) blood flow to erectile bodiesSqueezes veins shut blood pressure in erectile bodies
    • 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
    • SPERMATOGENE
    • SPERMATOGENESIS
    • SPERMATOGENESIS
    • SPERMATOGENESISMATURE SPERM CELL
    • SPERMATOGENESISMATURE SPERM CELL head acrosome midpiece nucleus tail mitochondria flagellum SEMINIFEROUS TUBULESSEM of sperm in lumen of seminiferous tubule
    • SPERMATOGENESIS Spermatogonia On basal lamina Mitosis Primary spermatocytes 1st meiotic division Secondary spermatocytes 2nd meiotic division Spermatid Haploid 4 from each 1 spermatocyte
    • SPERMATOGENESISMATURITY AND DEVELOPMENT
    • SPERMATOGENESISHormones Involved in Spermatogenesis• Gonadotropin Releasing Hormone (GnRH)• Follicle Stimulating Hormone (FSH)• Interstitial Cell Stimulating Hormone (ICSH=LH)• Testosterone• Inhibin• ABP
    • SPERMATOGENESIS300 million sperm/daySpermatogenesis beginsat puberty
    • HORMO
    • HORMONES hypothalamic Gn-RFnegative anterior pituitary gland negativefeedback 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
    • HORMONES Hormonal ControlHypothalamus GnRH Anterior Pituitary ICSH FSH
    • HORMONESHormonal Control ICSH Interstitial Cells Testosterone
    • HORMONES Hormonal ControlFSH Testosterone Sertoli Cells Spermatogenesis Inhibin
    • HORMONES Hormonal ControlInhibin Acts on anterior pituitary Inhibits FSH productionTestosterone Acts on hypothalamus Inhibits GnRH production
    • 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
    • _ICHTHUS_
    • CONTRACEPTION VASECTOMY
    • CONTRACEPTION CONDOMS
    • _ICHTHUS_