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28 Cards in this Set
- Front
- Back
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What are the functions of the reproductive system?
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gonads produce gametes, accessory organs allow for fertilization and nurturing of fetus, connected closely with the endocrine system
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Testes is the site of what? and what is the temperature requirements?
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spermatogenesis; need temp. lower than body temperature
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What is the most common form of cancer in young men?
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testicular cancer
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What is varicocele.
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blood supply is cut off due to a blocked vein or artery
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The penis is what type of organ?
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Copulatory organ
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What is the function of the penis?
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Delivers sperm to female reproductive tract, houses urethra, erectile tissue and vas deferense
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What is the mixture of sperm and accessory organ secretions?
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semen
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How much is released , and how many sperm in 1 ml?
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2 - 5 ml , 20 - 150 million sperm per 1 ml
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What accessory glands produce semen?
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prostate gland, bulborethal glands, seminal vesicles
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What are the functions of semen?
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protects, nourishes, and activates sperm
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What does fructose in semen do?
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used as fuel , makes ATP
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What does prostaglandins in the semen do?
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diminish female mucus viscosity, stimulates reverse peristalsis in uterus
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What does alkalinity, relaxin, and enzymes in the semen do?
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enhance motility
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What is prostatitis?
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inflammation of the prostate; common
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What is prostate cancer?
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2nd most common cancer in men, blocks urethra and vas deferense
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Where are sperm made?
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seminiferous tubules of testes (spermatogenesis)
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Where does sperm mature at then leave?
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mature in epididymis, and leaves testes in vas deferens
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Male sexual repsonse is ______________ and ejaculation is _________.
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parasympathetic , sympathetic
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What happens in the male sexual response?
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arterioles enlarge (blood engorgement), enlarged arterioles compress venules (traps blood in penis which causes rigidity)
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What is impotence?
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failure to achieve or maintain erection
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What happens during ejaculation?
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nerve impulses reach critical level, ducts and glands contract, vas deferens' walls create powerful peristaltic contractions
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What is the refractory period?
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muscular and psycological relaxation, can last minutes to hours but lengthens with age
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In spermatogeneis how many haploid cells are formed?
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4 from one diploid ;
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What are some problems with spermatogenesis?
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xenobiotics , abnormal sperm, anatomical
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Where is the GnRh hormone produced?
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gonadtrophin releasing hormone, produced in hypothalamus sends signal to pituitary gland
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What does the FSH and LH hormones do?
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stimulates spermatogenesis and secretion of testosterone respectively.
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What are the effects of testosterone?
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prompts of spermatogenesis, male seconadary characteristics, boosts metabolic rate, basis for sex drive, masculinizes the brain, made in small amounts in the adrenal gland
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What happens to the reproductive system when men age?
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testosterone levels decline, longer refractory period, males remain fertile throughout life but sperm motility slows from 50 minutes to uterine tube vs. 2 1/2 days
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