Question | Answer |
What term refers to the primary sex organs? (Both male and female) | Gonads |
What term is used to identify sex cells? | Gametes |
What is another word for the female egg? | Ova |
Testis-Size? | 1.5 inch long-1 inch wide |
Testis-Shape? | Oval |
Testis-Function? | Produce sperm |
Define tunica albuginea | "White Coat" Capsule that surrounds each of the testis |
Define septa | estensions of the capsule that extend into the testis and divide it into lobules |
Where are the seminiferous tubules? | found in each lobule of the testes |
What is the fuction of the seminiferous tubules? | function as sperm-forming factories that emplty sperm into the rete testis |
Where is testosterone produced? | intersitial cells produce androgens such as testosterone |
Rete Testis is between the ___ and ___ | Seminiferous tubules and epididymus |
Epididymus-Function? | mature and store sperm cells (at least 20 days) |
Edididymus-Location? | found on the superiro part of the testis and along to posterior lateral side |
Epididymus-Length? | nineteen feet |
How long does it take the sperm to travel through the epididymus? | 20 days |
Where is the sperm drawn after it leaves the epididymus? | contractions of the muscles in the epididymus walls expel sperm to the vas deferens |
What is the pathway of sperm? | epididymis
ductus deferens
urethra |
List 3 parts of the male reproductive "duct" system | epididymus
ductus deferens
urethra |
Urethra-extends from the base of the ___ to the tip of ___ | urinary bladder-penis |
List the 3 regions of the urethra | Prostatic urethra-surrounded by the prostate
Membranous urethra-from prostatic urethra to penis
Spongy (penile) urethra-runs the length of the penis |
What physically happens to the spongy urethra during sexual excitement? | becomes engorged with blood causing the penis to expand and become stiffer and straighter |
Where is the seminal vesicle located? | base of the bladder |
Seminal vesicle (60% volume of___) | semen |
List three substances secreted by the seminal vesicle | fructose (sugar)
vitamin C
Prostaglandins |
define prostaglandin | a hormone causing increased blood flow to the penis |
Prostate gland-Shape? | walnut shaped |
Prostate gland-Location? | base of the bladder, surrounding the urethra |
What blood test is used to detect prostate cancer? | PSA- tests the amount of prostate-specific antigen |
What are 3 possible symptoms of prostate cancer? | problems urinating
feeling that your bladder is not empty
pain when you orgasm
rarely, blood in the urine |
What kind of doctor deals with concerns of the prostate gland? | urologist |
What are 2 key functions of the bulborethral gland? | cleanses the urethra of acidic urine
serves as a lubricant during sexual intercourse |
What substance gives sperm the ability to swim? Where does it come from? | semen-a mixture of sperm +accesory gland secretions |
Why is sperm alkaline? | the alkalinity of semen helps neutralize the acidic environment of the vagina |
On average, how much semen is released during ejaculation? | half-teaspoon |
How many sperm are released on ejaculation? | 40 million to 600 million sperm |
List the 3 primary accessory organs of the male reproductive organs | epididymis
ductus deferens
urethra |
What are 3 external genitalia of the male reproductive system? | penis
scrotum
testicles |
What is another name for the cowper's gland? | bulborethral gland |
At what temperature are the sperm most viable? | 3 degrees cooler than body temperature |
List 3 regions of the penis | shaft
glans penis (enlarged tip)
prepuce |
Define spermatogenesis | production of sperm cells which occurs in the seminiferous tubules-process where excess cytoplasm is stripped away and a tail forms |
List 5 factors that can cause a decreased sperm count. | 1. obstruction of the duct system. 2. Hormonal imbalance. 3. pesticides. 4. excessive alcohol 5. ph imbalance |