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PHCC body male repo
male repo. system
| Question | Answer |
|---|---|
| What is mitosis? | the process by which a single cell duplicates its genetic material |
| Mitosis gives a human a new body every ____ years. | 10 years |
| a mitotic cell contains how many chromosomes? | 46 |
| What is meiosis? | a special type of cellular division that produces the sex cells ( spermatozoa & ova) |
| How many chromosomes does a meiosis contain? | 23 |
| What are the primary sex organs of reproduction called? | paired male gonads AKA testes (testicles) |
| What does the testicular arteries do? | carry O2 blood to the testes |
| What does the testicular veins do? | carry CO2 blood to the testes |
| what are the testes responsible for ? | producing spermatozoa and testosterone |
| What are spermatozoa ? | mature sperm cells |
| What are the seminiferous tubules? | the location where spermatogenesis occurs |
| Spermatozoa is produced at what rate per day? | 300 million per day |
| The spermatozoa has 3 parts what are they? | 1) Head , 2) mid-piece 3) flagellum (tail) |
| What does the head contain? | genetic material |
| What does the mid-piece contain? | the energy (ATP) for locomotion ATP= energy in cellular level |
| What is the flagellum function? | to propel the sperm up the female reproduction tract |
| What is the epididymis | a comma shaped structure where developing spermatozoa are stored which is adjacent to each testicle |
| How long ( approximately )is the epididymis? and how long does it take sperm to travel this length? | 20feet and travel time 20 days |
| The sperm travels through the epididymis to the urethra via what tube that has three names: what are these 3 names for the same tube? | Vas Deferens, Seminal Duct, Ducts deferens |
| What is the surgical procedure for male sterilization ? | bi-lateral vasectomy |
| What are two myths males used in order not to get a vasectomy? | it will affect my sex drive (libido)=FALSE, and it will affect my secondary male sexual characteristics = FALSE |
| What is the Spermatic Cord? | a protective sheath that surrounds the seminal duct, testicular arteries and veins ( remember there are 2 of these, one for each testicle |
| What is the Ejaculatory Duct? | the vessel responsible for the expulsion of the sperm into the urethra |
| What is semen or seminal fluid? | the liquid portion of the ejaculate |
| An average volume of semen per ejaculate is how much? | 2.5-6 ml |
| If the average ejaculate has some 300 million how many reach the cervix and then how many reach the ovum? | thousands reach the cervix and only hundreds reach the ovum |
| If the number of sperm falls below 20 million the male is considered what? | sterile or infertile |
| Once ejaculated the sperm can live inside the female reproduction tract for how long? | 48-72 hours |
| Why are large numbers of spermatozoa required to fertilize an ovum ? | The ovum has a protective membrane that must be broken down by an enzyme secreted from the head of the sperm ( FYI=Acrosome Alheialoyrnes) |
| What are the characteristics of seminal fluid? | 1)milky in color, 2)viscous 3)sticky 4)alkalitic 5)contains seminal plasim 6)enzymes to activate the sperm after ejaculation 7) prostaglandins |
| Why is semen sticky? | it contains fructose which acts as energy for the sperm |
| Why is semen alkalitic? | so it can neutralize the acidity of the vaginal secretion and urine |
| What does seminal plasim do? | protect sperm from certain bacteria found in the vaginal tract and semen |
| What does prostaglandins do? | promotes muscular contraction of the female genital tract |
| Where is semen produced? | 1)prostate 2) Seminal Vesicles 3)Bulbourethral glands AKA Cowper glands |
| What is the prostate and where is it located? | It is a donut shaped gland approximately the size & shape of a chestnut and located just inferior to the urinary bladder surrounding the superior portion of the urethra that produces semen |
| What are the seminal vesicles? | a paired pouch-like structure ( there are 2 one for each testicle) approximately 2 inches in length and positioned to and at the base of the urinary bladder in front of the rectum that produced semen |
| What is the Bulbourethral Glands , also called the Cowper glands? | A paired of pea sized glands glands( there are 2 one for each testicle) that are located just inferior to the prostate that produce semen. |
| What is testosterone? | the male sex hormone |
| What do the interstitial cells of Leydig do? | produce testosterone |
| What does testosterone control? | 1) development , growth and maintenance of male sex organs 2) it causes the descent ( usually before birth) of the testes from the abdominoplevic cavity into the scrotum |
Created by:
wgolon
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