QUESTIONSAre 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?
QUESTIONAre 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 SCROTUMSkinCovers 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 PENISComposed ofspongy erectie tissuesErectile organ for Shaft(body)male. glans penisSperm 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 TESTESlocated 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 TESTESMale gonadsseminiferous tubules-form spermLeydig 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 TESTESSepta 250-300 lobules Seminiferous tubules
ACCESSORY GLANDS SEMINAL VESICLE60% of semenFructose to nourish spermAlso contains asorbic acid,coagulating enzyme, prostaglandinSeminal Vesicle
ACCESSORY GLANDS SEMINAL VESICLEA pair of glands that secrete a liquid component of semen into the vas deferens.Secretion is alkaline Seminal Vesicle
ACCESSORY GLANDS PROSTATE GLANDSurrounds prostatic urethra30% of semenSupports sperm
ACCESSORY GLANDS PROSTATE GLANDSecretion- slightly alkaline fluid thatactivates the sperm and preventsthem from sticking togethercitrate, calcium, phosphate ionsclotting enzymesserine protease
ACCESSORY GLANDS Bulbourethral Gland / COWPER’s GlandFunction- 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’sGlandSecretion- a thick, clear alkalinemucous that drains into themembranous urethra.pre-ejaculatory fluidmucusacid buffers Bulbourethral gland
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
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 activationPeristaltic contraction of smoothmuscles in ducts and glands -ejaculationConstriction of arteries blood pressure in erectile bodies
ERECTIONSexual excitement(parasympathetic) blood flow to erectile bodiesSqueezes veins shut blood pressure in erectile bodies
ERECTIONErectile tissues corpora cavernosa (2) corpus spongiosumErectile physiology dilation of deep artery lacunae fill with blood erectile tissues expand and harden penile veins pinched off
SPERMATOGENESISMATURE SPERM CELL
SPERMATOGENESISMATURE SPERM CELL head acrosome midpiece nucleus tail mitochondria flagellum SEMINIFEROUS TUBULESSEM of sperm in lumen of seminiferous tubule
SPERMATOGENESIS300 million sperm/daySpermatogenesis beginsat puberty
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 ControlInhibin Acts on anterior pituitary Inhibits FSH productionTestosterone Acts on hypothalamus Inhibits GnRH production
HORMONES EFFECTS OF TESTOSTERONEmuscle and bone growthfacial and pubic hair growththickening of vocal cordsgrowth of pharyngeal cartilagehair follicle effectsstimulates sebaceous glandsIncreased BMR