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BIO 164/165
Male and Female Reproductive systems
69
Biology
Undergraduate 1
12/10/2012

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Cards

Term
What is the structure/function of the Testes?
Definition
The testes produce sperm and testosterone. They are located in the scrotum, and are typically a few degrees cooler than core body temp.
Term
What is the function/structure of the Epididymis?
Definition
The epididymis is a highly coiled tubule, where sperm mature and are stored.
Term
What is the structure/function of the Vasdeferens?
Definition

The tube that conducts sperm from the epididyms to the urethra

 

Term
What is the structure/function of the Seminal Vesicles?
Definition
They produce secretions that make up most of the volume of semen.  The compoents of semen: citric acid, fructose, amino acids, and prostaglandins.
Term
What is the structure/function of the Ejaculatory Duct?
Definition
This duct transports sperm and glandular secretions and combines all semenial fluid.
Term
What is the structure/function of the Prostate?
Definition
Secretes a watery ALKALINE fluid to raise the vaginal PH and it is the size of a walnut.
Term
what is the structure/function of the Bulbourethal Gland?
Definition
Secretes lubricating mucus just before ejaculation and rinses urine from the urethra.
Term
What is the structure/function of Urethra?
Definition
Tube though which sperm and urine leave the body.
Term
What is the structure/function of the Penis?
Definition
Erectile organ of sexual intercourse.
Term
What is the structure/function of the Cremaster Muscle?
Definition
A thin layer of skeletal muscle that raises and lowers the testes to reduce temperature to promote spermatogenesis.
Term
Seminiferous Tubules
Definition
Located in the testes. Function is sperm production.
Term
What cell guides sperm production and creates the blood testes barrier?
Definition
Sertoli Cell.
Term
What hormone does the sertoli cell release?
Definition
Inhibin to slow spermiogenesis.
Term
What cells exist between the seminiferous tubules?
Definition
Lydig Cells.
Term
What hormone do lydig cells manufacture?
Definition
Testosterone.
Term
What does FSH do?
Definition
FSH with testosterone stimulates sertoli activity and sperm formation.
Term
What cells do FSH act upon?
Definition
acts upon the sertoli cell.
Term
What is the source of FSH?
Definition
Anterior Pituitary Gland.
Term
Semen is composed of what?
Definition
Spermatozoa and secretions from the prostate, seminal vesicles, and the bulbourethral glands.
Term
What does the prostate contribute to semen production?
Definition
A watery ALKALINE fluid.
Term
What do the seminal vesicles contribute to semen production?
Definition
Citric acid, fructose for sperm energy. Amino acids that thicken semen, and prostanglandins that cut the viscosity of the cervical mucus and to cause uterine contractions that assists the movement of sperm.
Term
What do the bulbourethral glands contribute to semen production?
Definition
A clear slippery fluid that rinses acidic urine remnants from the urethra before the sperm pass though.
Term
What is a negative feed back cycle?
Definition
A regulatory mechanism in the body. One which the outcome of a process feeds back on the system and shuts down the process.
Term
What is the negative feed back cycle for testosterone.
Definition
Hypothalamus releases GnRH which stimulates pituitary gland the released LH which stimulates interstitial cells which elevates testosterone. Elevated testosterone levels shut down GnRH which causes LH to drop with shuts off the production of testosterone.
Term
What is GnRH and where does it come from?
Definition
GnRH or Gonadotropin-releasing hormone. GnRH stimulates the pituitary gland to release FSH and LH.
Term
What is seminalplasmin?
Definition
An antibiotic that may prevent UTI's in males.
Term
What is the structure/function of the Ovaries?
Definition
the size of two almonds. Responsible for egg (oocyte), estrogen, and progesterone production.
Term
What is the structure and function of the fallopian tubes?
Definition
AKA oviducts. A duct for transporting and eggs and it is the site for fertilization.
Term
What is the structure and function of the uterus?
Definition
A allow chamber in which an embro develops.
Term
What is the structure and function of the myometrium?
Definition
It is the middle layer of the uterine wall. it is a smooth muscle that expands during pregnancy and expands during labor.
Term
What is the structure and function of the endometrium?
Definition
Supports the fertilized egg and sloughs off creating the period.
Term
what is the structure and function of the cervix?
Definition
Lower part of the uterus that opens into the vagina.
Term
what is the structure and function of the vagina?
Definition
Oran of sexual intercourse, produces lubricating fluids, and is the birth canal.
Term
What is the structure and function of the clitoris?
Definition
Organ of sexual arousal.
Term
How many steps are there in a menses cycle?
Definition
Six Steps.
Term
What is the first step in the menses cycle?
Definition
Primary follicle. Contains the primary oocyte and it secretes estrogen.
Term
What is the second step in the menses cycle?
Definition
Maturation: A fluid filled ANTRUM develops forming a cavity - the outer layer. The inner layer directly surrounds and houses the oocyte.
Term
What is the third step in a woman's menses cycle?
Definition
The mature (Graafian) follicle develops and contains a polar body, secondary oocyte, and ovarian connective tissue. Meiosis one is complete.
Term
What is the forth stage in a woman's menses cycle?
Definition
Ovulation: The mature Graafian follicle ruptures releasing the secondary oocyte with its polar body and grandulosa cells.
Term
What is the fifth step in a woman's menses cycle?
Definition
The corpus luteum or "yellow body" remains in the ovary. It secretes Estrogen and progesterone.
Term
How long does the menses cycle last?
Definition
Five days.
Term
How long does the proliferative phase last?
Definition
From day six to day fourteen.
Term
FSH triggers what hormone in women?
Definition
Estrogen.
Term
LH triggers what hormone in women?
Definition
Progesterone.
Term
What happens to the endometrium during the proliferative phase?
Definition
The endometrium proliferates (thickens)
Term
What is happening to the follicle in the proliferative phase?
Definition
Maturation yields a Graafian follicle on day 14 and the Graafian follicle ruptures releasing the secondary oocyte. Ovulation.
Term
What is the predominate pituitary hormone controlling the proliferative phase?
Definition
FSH
Term
What hormone does FSH trigger in the proliferative phase?
Definition
Primarily estrogen and some progesterone.
Term
Ovulation occurs on what day of the cycle?
Definition
Day 14.
Term
What hormone triggers a pituitary surge of what hormone to trigger ovulation.
Definition
Increasing estrogen causes and LH surge and ovulation occurs.
Term
What is the duration of the progestational (luteal)phase?
Definition
From day 14 to day 28.
Term
What is the predominate pituitary hormone controlling the progestational phase?
Definition
LH
Term
The hormone LH stimulates what ovarian structure to produce what primary hormone?
Definition
LH Stimulates the corpus lutem that produces large amounts of progesterone and some estrogen.
Term
How does LH act on the endrometrium?
Definition
LH causes the endrometrium to mature.
Term
What happens when FSH and LH levels drop?
Definition
When FSH and LH levels drop, the corpus luteum begins to degenerate and the endrometrium begins to break down resulting in a period.
Term
How does the negative feed back cycle operate in women?
Definition
When progesterone levels rise, if no pregnancy occurs, the high levels of progesterone trigger GnRH which inhibits production of progesterone. And the cycle starts over again.
Term
A fertilized Ovum secretes WHAT hormone to keep stimulating WHAT ovarian structure to keep producing WHAT hormone to maintain THIS Uterine layer?
Definition
HCG is secreted by the fertilized ovum.
Which stimulates the CORPUS LUTEUM to continue PROGESTERONE to maintain the ENDOMETRIUM layer.
Term
What is the hormone we measure during a pregnancy test?
Definition
HCG
Term
Define menopause
Definition
When ovulation and menstruation stop completely - Usually between 45 and 50 years old.
Term
What virus targets the cervix and the penis and can cause cancer?
Definition
HPV
Term
Is there a vaccine for HPV
Definition
For women only.
Term
How does progesterone relate to PMS?
Definition
Progesterone has a calming effect on the brain and decreases fluid retention.
Term
Define endometriosis.
Definition
Is the presence of uterine lining in other pelvic organs, especially the ovaries, characterized my cyst formations, adhesion and menstrual pains.
Term
What are the four stages of human sexual response?
Definition
excitement, plateau, orgasm, and resolution.
Term
Define sexual excitement.
Definition
increased blood flow, enlarged sexual organs, in women lubrication starts here.
Term
Define Plateau
Definition
Stage one plus enlargement of testes that also contact into the body for protection. In women the outer third of her vagina enlarges and the clitoris retracts under the hood. Resp rate increases. HR increases.
Term
Define Orgasm
Definition
peak of sexual response. muscles of the repo system contract in both sexes. Men have a two part orgasm and women have rhythmic contraction in the uterus and vag.
Term
Define Resolution.
Definition
When the body returns to a normal functioning state. Women take longer then men.
Term
What are basic forms of contraception?
Definition
Abstinence, Surgical Sterilization, Hormonal Methods, IUD's, Diaphragms and cervical caps, Chemical spermicides.
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