EQ: What are the parts and functions of the MRS?
Male Reproductive System Functions to produce the male reproductive cell, sperm Sperm production begins during puberty, usually between 12-15 years old Pituitary gland secrets a hormone that causes testes to begin producing testosterone; testosterone causes testes to begin producing sperm
Penis Male sex organ Used for sexual reproduction and to eliminate waste Sac that holds the testesScrotum Controls temperature*Seminiferous Tubules – long, threadlike tubesinside testes where sperm is produced
Male sex glandsTestes Make testosterone – male sex hormone Produce sperm – male reproductive cell Coiled structures on theEpididymis backside of each testicle Sperm are matured and stored
• 2 long tubes, connects w/ epididymis& urethraVas • Line with cilia to help move spermDeferens • Loops over pubic bone, around bladder, through prostate, becomes ejaculatory duct that opens into urethraSeminal •2 “fluid filled pouches” •Secrete fluid that mixes w/ spermVesicle •Makes sperm mobile •Provides nourishment
• Located below the bladder • Secretes milky, alkaline fluidProstate • Major part of semen • Protects sperm by neutralizing acidity of urethra and vagina • Opens into urethraCowper’s • Secretes clear, sticky fluid to cleanse urethra to makeGland safe passageway for sperm
• Passageway for sperm & urineUrethra • Impossible to leave at the same time! • A mixture of sperm &Semen fluids from seminal vesicles, prostate, and Cowper’s gland
Class ActivityWrite a story about Winston’s life.Winston is a sperm. Write abouthis childhood all the way toadulthood. Include whereWinston lives and how he travels.Be creative!
Testicular Cancer Prostate Cancer Most common cancer in Most common cancer in men ages 15-34 men If caught early, can be treated Symptoms include: frequent properly & effectively urination; difficulty, pain or 1st sign is a slight enlargement burning when urinating; and change of consistency blood in urine, lingering pain (i.e. lump) in testicle, or fluid in back, hips, or pelvis. or blood in the scrotum No early symptoms Only prevention is regular examinations by a doctor
Nocturnal Emission During puberty, hormones cause the glands in the reproductive system to begin producing fluids that contain sperm The body relieves this pressure while the male is asleep The penis becomes erect and he will have an ejaculation May or may not be accompanied by a dream If a male has a dream dealing with sexual content, and has a nocturnal emission, this is known as a “wet dream”
Sterility Male condition where the sperm a weak, malformed, sparse or nonexistent, or unable to join an ovum (egg) Fertility does not take place Causes: temperature changes, exposure to certain chemicals, smoking, getting mumps as a adult, an untreated STD, a faulty operation of epididymis, vas deferens, or urethra
Keeping the MRS Healthy Cleanliness of uncircumcised penis Smegma can get trapped under the foreskin (dead cells and glandular secretions) Can cause irritation or infection if not cleaned regularly Testicular self-examinations Should be done monthly! The male rolls each testicle gently between the thumb and fingers of both hands. If there are any hard lumps, check with the doctor!