Term
Generate male gametes and synthesize testosterone. |
|
Definition
|
|
Term
Receive, mature and transport male gametes |
|
Definition
Duct System: Epidymis and Vas deferens |
|
|
Term
Secrete fluids that support sperm & generate the bulk of the semen |
|
Definition
1. Prostate gland - 30% 2. Bulbourethral gland - small 3. Seminal Vesicles - 60% |
|
|
Term
|
Definition
|
|
Term
Where does spermatogenesis and spermiogenesis occur? |
|
Definition
In the seminiferous tubules of the testes. |
|
|
Term
Explain the 3 stages of spermatogenesis. |
|
Definition
1. Mitosis: the spermatogonia is divided into 2 primary diploid spermatocytes. 2. Meiosis I & II: After Meiosis I, the primary diploid spermatocytes become secondary diploid spermatocytes, which then undergoes meiosis II and becomes haploid spermatids. 3. Spermiogenesis: the spermatids becomes a mature spermatozoa, with a flagella, an acrosome and reduction in cytoplasm. |
|
|
Term
Describe 4 things about the spermatozoa (mature sperm). |
|
Definition
1. It's fully differentiated and released into lumen of seminiferous tubule. 2. Has a head and a flagella (tail, whose body is mainly made of mitochondria. 3. Head is composed of acrosome and condensed nucleus. Acrosome is made of proteolytic enzymes and hyaluronidase. 4. Flagella enables movement |
|
|
Term
Majority of seminal fluid is found where? |
|
Definition
Seminal vesicles (60%) > Prostate gland (30%) > Vas Deferens (10%) and small amounts from the bulbourethral glands. |
|
|
Term
Both testes produce __ per day. What of semen? |
|
Definition
120 million sperm/ day 120 million semen/ ml of sperm |
|
|
Term
What is the maxumal lifespan of semen in the female reproductive tract? |
|
Definition
|
|
Term
|
Definition
|
|
Term
Testosterone is secreted by ___. |
|
Definition
|
|
Term
___ stimulates the Leydig cells to secrete testosterone. |
|
Definition
Luteinizing hormone (LH) = LH is secreted by the anterior pituitary glands and is under the control of the Hypothalamus-Pituitary-Testicular axis. |
|
|
Term
What is the MOA of testosterone? |
|
Definition
1. It is lipophilic and diffuses into cell, where it is mostly converted to dihydrotestosterone (DHT) by 5 alpha-reductase. 2. DHT then binds androgen receptor located in the cytoplasm. The DHT + androgen receptor then enters the nucleus and binds to hormone response elements (HRE) of the DNA, and induces gene transcription and protein synthesis. |
|
|
Term
Explain the process that leads to stimulation of Spermiogenesis . |
|
Definition
FSH -> Sertoli cells -> spermatogenesis
- FSH stimulates sertoli cells which secrete components that nurtures spermatogenesis. |
|
|
Term
Testosterone is converted to DHT by ___ |
|
Definition
|
|
Term
DHT binds to ___in the cytoplasm |
|
Definition
|
|
Term
__ converts testosterone to estradiol via a CYP19 metabolism. |
|
Definition
|
|
Term
What are the 2 inactive and active metabolites of testosterone? |
|
Definition
Inactive: Androsterone and Etiocholanolone.
Active: Dihydrotestosterone and Estradiol |
|
|
Term
DHT has __ greater affinity than testosterone. |
|
Definition
|
|
Term
__ makes estrogen that helps with spermatogenesis. |
|
Definition
|
|
Term
___ is used to treat osteoporosis in older. |
|
Definition
|
|
Term
Explain how the Hypothalamus-Pituitary-Testicular axis works. |
|
Definition
Hypothalamus releases Gonadotropin-releasing hormone (GnRH) which stimulates the Anterior Pituitary to release LH and FSH. LH stimulates Leydig cells to secrete testosterone, while FSH stimulates sertoli cells to initiate spermatogenesis.
Testosterone feedback inhibits hypothalamus, while inhibin (made by sertoli cells) feedback inhibits the anterior pituitary. |
|
|
Term
___feedback inhibits hypothalamus, while ____ feedback inhibits the anterior pituitary. |
|
Definition
Testosterone
inhibin (made by sertoli cells) |
|
|
Term
Erection is achieved entirely by the resulting ___ |
|
Definition
|
|
Term
For the male sexual act to occur,the sensory nerve signal has to originate from the ___. |
|
Definition
|
|
Term
T/F: during erection, the arterial inflow and venous outflow from corpora are balanced. |
|
Definition
False: this occurs during flaccid state |
|
|
Term
Erection is prolonged due to ___ |
|
Definition
decrease in venous outflow from corpora, which is caused by the compression of blood outflow by the swollen corpora. |
|
|
Term
___impulses from the sacral portion of the spinal cord dilates arteries of the penis allowing blood to flow into the corpus cavernosum and spongiosum causing an erection. |
|
Definition
|
|
Term
Nitric oxide enhances the activity of ___ and increases ___. |
|
Definition
guanylate cyclase and Increases cGMP |
|
|
Term
Erection is controlled by ___ nervous system, while emission is contolled by___ NS. |
|
Definition
Erection = parasympathetic Emission = sympathetic |
|
|
Term
After ejaculation, the male sexual excitement disappears and erection ceases,in a process called ___ |
|
Definition
|
|
Term
What is the cause of erectile dysfunction? |
|
Definition
cGMP, which causes dilation of eretile tissues is degraded by phosphodiesterase-5 (PDE-5): Vascular problems, peripheral neuropathies, endocrine, drug-induced. |
|
|
Term
Give the 4 drugs (and their brand names) that inhibit PDE-5. |
|
Definition
1. Viagra (silenafil) 2. Cialis (Tadalafil) 3. Levitra (Vardenafil HCL)
4. Stendra (Avanafil) |
|
|
Term
Where is PDE-5 mostly found? |
|
Definition
1. Peripheral vascular tissue 2. Tracheal smooth muscle 3. Platelets |
|
|
Term
What 5 types of drugs (and their example) causes erectile dysfunction? |
|
Definition
1. Anticholinergic drugs ex. anti-depressants, anti-psychotics and anti-histamines.
2. Dopamine antagonists - which increase prolactin and decreases testosterone and GnRH.
3. Estrogen/Anti-androgens
4. CNS depressants ex. benzodiazepines, alcohol and narcotics.
5. Agents that decrease penile blood flow ex. diuretics, beta blockers, CNS sympatholytics. |
|
|
Term
What are the 4 possible causes of hypognadism? |
|
Definition
1. Decreased activity of the testosterone, which leads to decreased testosterone or other defect impairing male sexual act. 2. Lack of functional androgen receptors - no treatment available. 3. Complete or incomplete androgen insensitivity - defect in androgen receptor, 5-reductase deficiency). 4. Improper GnRH signaling leading to low LH (which means low testosterone) and low FSH which means low Sertoli cells (means less spermatogenesis = impotence) |
|
|
Term
Give and describe the 2 types of male hypogonadism. |
|
Definition
1. Primary hypogonadism - Defective gonad function - serum testosterone and sperm are below normal . - High concentrations of LH and FSH
2. Secondary Hypogonadism - hypothalamic or pituitary defects - low testosterone and sperm - Low LH and FSH |
|
|
Term
What is another name for hypogonadism of ageing men? |
|
Definition
Andropause or Late-onset hyponadism |
|
|
Term
Why is testosterone not administered orally? |
|
Definition
It shows rapid hepatic first pass metabolism. |
|
|
Term
Which testosterone replacement therapy avoids first pass metabolism due to slower hepatic metabolism and there can be given orally? |
|
Definition
|
|
Term
Name the 3 common testosterone replacement therapies and their route of administration. |
|
Definition
1. testosterone esters - IM 2. Alkylated androgens - oral 3. Transdermal patch - transdermal |
|
|
Term
Which testosterone replacement therapy has the highest rate of hepatoxicity and is less androgenic than testosterone? |
|
Definition
|
|
Term
[image]
What are the names for structures: A, B, C and D
What is B, C, D called? |
|
Definition
A. Testosterone
B. Testosterone Enanthate (Delatestryl)
C. Testosterone Cypionate (Depo-testosterone)
D. Testosterone Undecanoate (Andriol)
B, C, & D are all testosterone esters |
|
|
Term
|
Definition
abnormal development of large mammary glands in males, often due to obesity, genetics, hormones, disease or drug induced. |
|
|
Term
__ is used to treat benign hyperplasia. |
|
Definition
Finasteride = 5-alpha-reductase inhibitor |
|
|
Term
The most common cause of death in men over the age of 75 is ___ |
|
Definition
|
|
Term
Prostate cancer is treated with ____ |
|
Definition
androgen receptor antagonists = flutamide |
|
|
Term
Siteofovumproductionand release |
|
Definition
|
|
Term
Transport site of fertilization for ovum |
|
Definition
Uterine or fallopian tube |
|
|
Term
Site of implantation and growth of developing embryo (blastocyts). |
|
Definition
|
|
Term
What are the 3 parts of a uterus. |
|
Definition
1. Fundus
2. Body
3. Cervix |
|
|
Term
Site of delivery of sperm. |
|
Definition
|
|
Term
Explain the process of of menarche (1st menses) which signals puberty. |
|
Definition
1. starts around 8 y/o, the female starts to secrete GnRH in pulsatile manner
2. GnRH acts on anterior pituitary to release LH and FSH.
3. LH and FSH causes growth of ovaries and follicles and menarche.
4. Ovaries secrete more estrogen and progesterone = secondary female characteristics. |
|
|
Term
Acceleratedgrowthof6-12primordial follicleseachmonth occurs when? |
|
Definition
1st phase/follicular phase of the ovarian cycle |
|
|
Term
During follicular phase, acceleratedgrowthof ___ occurs eachmonth |
|
Definition
6-12 primordial follicles and Antral follicle |
|
|
Term
Theearlygrowthoftheprimaryfollicleuptotheantral follicle isstimulatedmainlyby ____alone |
|
Definition
|
|
Term
What happens during follicular phase of the follicular phase of the ovarian cycle? |
|
Definition
Accelerated growth and formation of a vesicular follicle, which occurs due to a positive feedback by LH and FSH |
|
|
Term
|
Definition
Mid-cycle surge in LH stimulates follicular rupture and ovulation. FSH and LH causes follicular to swell and rupture, discharging the ovum. |
|
|
Term
Describe the Luteal Phase of the ovarian cycle. |
|
Definition
Follicular cells remaining from the follicular phase turn into lutein cells and are luteinized by LH. They then become corpus luteum that secretes more progesterone than estrogen. |
|
|
Term
Corpus luteum that secrete more ____ |
|
Definition
more progesterone than estrogen |
|
|
Term
The MOSTpotent naturally occurring estrogen in humans is ____ |
|
Definition
17-β-estradiol > estrone& estriol |
|
|
Term
Steroidal estrogens arise from ____or ____by aromatization catalyzedby _____whichis localized in ovariangranulosa cells |
|
Definition
androstenedione or testosterone;
aromatase |
|
|
Term
|
Definition
A - Cholesterol
B Thecal cells
C - Granulosa cells
D. Androstenedione
E. Androstenedione
F. Estradiol
G. Estradiol |
|
|
Term
___ increasetheactivitiesof aromataseand facilitatethetransport ofcholesterol into thecells (theca and granulosa cells) thatsynthesizeestrogens. |
|
Definition
|
|
Term
Estrogeninhibits ___ inthebonesand stimulatesbonegrowth |
|
Definition
|
|
Term
Osteoporosis occursafter menopause due to ___. |
|
Definition
|
|
Term
What are 4 functions of progesterone. |
|
Definition
1. Promotes the secretory changes and prepares the uterus for implantation of the fertilized ovum.
2. Decreases frequency and intensity of uterine contractions, preventing expulsion of implanted ovum.
3. Promotes secretion by the mucosal lining of fallopian tubes.
4. Causes aveolar cells of the breast to grow and become secretory. |
|
|
Term
[image]
What is A, B and C in the endometrial cycle? Give how long they last and which hormones are present. |
|
Definition
A. Proliferative phase - high LH and estrogen = 11 days
B. Secretory phase - High progesterone and Inhibin = 12 days
C. Menstrual phase - somewhat high FSH = 5 days |
|
|
Term
Proliferative phase (pre-ovulatory) is also known as ____ phase, while Secreoty phase (post-ovulatory) is also known as ___ phase |
|
Definition
Proliferative phase (pre-ovulation) = Follicular phase
Secretory phase (post ovulation) = Luteal phase |
|
|
Term
During mense the desquamation of ____ occurs along with the involution of ___ when ovum is not fertilized. |
|
Definition
Desquamation of endometrium
Involution of the corpus luteum |
|
|
Term
FSH & LH actonthe ovaries to causesecretionof _____. |
|
Definition
|
|
Term
Before ovulation occur, what must happen first? |
|
Definition
FSH and LH --> Estrogen and Progesterone --> Estrogen positive feedbacks on LH --> LH surge = ovulation |
|
|
Term
In the hypothalamic-pituitary-ovarian axis _____ provide feedback inhibitionof FSH & LH from theanteriorpituitary |
|
Definition
Estrogen & progesterone from Corpus Luteum |
|
|
Term
In the Hypothalamic-Pituitary-Ovarian Axis, ____ inhibits FSH. |
|
Definition
Inhibin released from the corpus luteum |
|
|
Term
Menopause occurs around what age? |
|
Definition
|
|
Term
What 5 things occur during menopause? |
|
Definition
1. Few primordial follicles left
2. Menses stop
3. Ovaries are no longer responsive to gonadotropins (LH and FSH) = LH and FSH are still produced at normal levels.
4. Estrogen and progesterone no longer made secreted by ovaries.
5. No feedback inhibition of FSH and LH, so high levels of FSH and LH
|
|
|
Term
What sexual dysfunction is commonly referred to as "drysex." |
|
Definition
|
|
Term
What type of sexual dysfunction occurs when ejaculatepassesintothebladder,insteadoftoward theanteriorurethra andoutofthepenis? |
|
Definition
|
|
Term
Spermareinsufficientinnumber,haveabnormalmorphology, orhaveinadequatemotility,andfailtofertilizetheovum. |
|
Definition
Sexual dysfunction = Infertility |
|
|
Term
What is the first line therapy for erectile dysfunction? |
|
Definition
|
|
Term
What are the two pharmacological treatments for erectile dysfunction? |
|
Definition
1. PDE-5 inhibitors
2. Synthetic prostaglandin E1 analogs (Alprostadil) |
|
|
Term
PDE-6 is more selective for ____ and is often found in ___ |
|
Definition
Sildenafil >> Vardenafil
Found in photoreceptors |
|
|
Term
___type of PDE receptor is found mostly in genital tissues, tracheal smooth muscle and platelets and can lead to bleeding tendencies. |
|
Definition
|
|
Term
Tadalafil (Cialis) is selective to ____ receptor, which is found mainly in ____. |
|
Definition
Tadalafil = PDE-11 selective
- found mostly in skeletal muscle |
|
|
Term
What are the side effect of PDE-5 inhibitors? |
|
Definition
1. Sildenafil (Viagra) = PDE-6 = photoreceptors in retina = photosensitivity and blurred vision
2. Tadalafil (Cialis) = PDE-11 = skeletal muscles = myalgia and back pain
3. Priapism (constant erection)
4. Hearing impairment
5. Nonarteric Anterior Ischemic Optic Neuropathy (NAION) |
|
|
Term
Contraindications of PDE-5 inhibitors |
|
Definition
Do not while on Nitrates = can cause hypotension |
|
|
Term
What 4 classes of drugs interacts with PDE-5 inhibitors? |
|
Definition
1. Nitrates→CONTRAINDICATED
– Producehypotension
– Suppliesextranitricoxide(NO)
– 24to48-hourseparationrecommended(dependingondrug½-life)
– Ifemergency,usenon-nitrateagent
2. CYP3A4inhibitors(strongàdonotcoadminister)
– Macrolideantibiotics&Azoleantifungals
3. Antihypertensivemedications(hypotensiverisk)
– Alpha-1adrenergicblockersàseparatedosesby4hrs
– OtherBPmedswithsignificanthypotensionrisk
4. Alcohol(hypotensionrisk) |
|
|
Term
Taking PDE-5 inhibitors with food decreases absorption except for ___ and ___ |
|
Definition
Tadalafil (Cialis) & Avanafil (Stendra) |
|
|
Term
You should counsel patient taking PDE-5 to seek medical attention if erection last for ___ |
|
Definition
|
|
Term
What is the MOA of Alprostadil (a synthetic prostaglandin E1 analong)? |
|
Definition
Increased cAMP, which causes smooth muscle relaxation and increased blood flow filling the corpora cavernosa. |
|
|
Term
What are the initial doses and frequency for:
a. Intracavernosal injections (Caverject, Edex)
b. Medicated Urethral System for Erection (MUSE) |
|
Definition
a. Caverject/Edex:
- Vasculogenic or psychogenic etiology = 2.5 mcg
- Neurogenic etiology = 1.25 mcg
Frequency: 3 dose/week every 24 hrs
b. MUSE = 125 mcg
frequency = 2 doses/24 hrs |
|
|
Term
___ treatment for erectile dysfunction is 1st line in patients in stable relationship. |
|
Definition
Vacuum Erection Devices (VED) |
|
|
Term
__ is indicated for primary and secondary hypogonadism. |
|
Definition
|
|
Term
What is the ideal testosterone replacement therapy for hypogonadism? List 4. |
|
Definition
1. Achieves normal testosterone serum concentrations.
2. Normal circadian rythm: peak in morning and trough in afternoon
3. Normal androgen metabolite concentration
4. Minimal side effects |
|
|
Term
Which testosterone dosage form avoids 1st pass metabolism, and which requires less frequent administration? |
|
Definition
Buccal - avoids 1st pass metabolism
IM - requires less frequent administration |
|
|
Term
Absenceofmenstrualperiodinawomanof reproductive age. |
|
Definition
|
|
Term
Abnormallyheavyandprolongedmenstrualperiodat regularintervals. |
|
Definition
|
|
Term
Abnormaluterinebleedingthatoccurswithout ovulationtakingplace. |
|
Definition
|
|
Term
Conditionofpainduringmenstruationthatinterferes withdailyactivities |
|
Definition
|
|
Term
Collectionofphysicalandemotional symptomsrelatedtoawoman'smenstrualcycle. |
|
Definition
Premenstrual Syndrome (PMS) |
|
|
Term
Give and describe the 2 types of amenorrhea. |
|
Definition
PrimaryAmenorrhea–Absenceofmensesbyage16yrsinpresenceof normalsecondarysexualdevelopmentorabsenceofmensesbyage14yrsin absenceofnormalsecondarysexualdevelopment
SecondaryAmenorrhea-Absenceofmensesforthreecyclesorfor6months inpreviouslymenstruatingwoman. |
|
|
Term
___ is the most common cause for amenorrhea. |
|
Definition
Unrecognized Pregnancy -- always check to see if they are pregnant if they are not getting menses. |
|
|
Term
Secondary amenorrhea is commonly caused by this 4 factors: |
|
Definition
1. Hypothalamic suppression
2. Hyperprolactinemia
3. Ovarian disorder
4. Uterine disorder |
|
|
Term
PrimaryAmenorrheacanresultfrom |
|
Definition
Congenital anomaly or Imperforate hymen |
|
|
Term
Secondary Amenorrhea can result from
|
|
Definition
Postsurgicaladhesions or
AbnormalUterineDevelopment (Congenital) |
|
|
Term
Lack of Follicular Development can be due to this 3 disorders. |
|
Definition
1. Turner syndrome (XO chromosome)
2. Chemotherapy/radiation produce gonadal toxins
3. Gonadal dysgenesis |
|
|
Term
FSH&LH secretion can be altered by 4 endocrinologicormedical/drug-treatment conditions which causes Amenorrhea. |
|
Definition
1. Prolactin-secreting adenoma in the pituitary
2. Breast-feeding
3. Hypothyroidism
4. Pregnancy - most common cause
5. Weight loss/ Eating disorder -affects GnRH
6. Intense exercise - affects GnRH
7. Stress
8. Polycystic ovarian syndrome
9. Hepatic/Renal disease |
|
|
Term
Drugs that causes hyperprolactinemia which suppresses HPG and causes amenorrhea are: |
|
Definition
1. Dopamine antagonist
2. Serotonine enhancers
|
|
|
Term
Polycystic ovarian syndrome affects ___% of women in their reproductive years |
|
Definition
|
|
Term
Polycystic ovarian syndrome (PCOS) causes ____ as a result of elevated androgenic hormone made by the ovaries. |
|
Definition
Anovulation or oligo-ovulation/ bleeding |
|
|
Term
what is the treatment for anovulatory bleeding associated with polycystic ovarian syndrome (PCOS) |
|
Definition
Insulin sensitizers: Metformin or thiazolidinedione - it is a partially genetic disease that results in metabolic syndrome and insulin resistance. |
|
|
Term
what is the definition of menorrhagia? |
|
Definition
heavy menstrual blood loss greater than 80ML per cycle |
|
|
Term
___ and ___ must be at the top of the differential diagnosis for any woman presenting with heavy menses. |
|
Definition
Pregnancy and Miscarriage |
|
|
Term
74% to 92% of women with ___ have von Willebrand's disease. |
|
Definition
Menorrhagia - von Willebrand (defective Factor VII causes decreased platelet adhesion) |
|
|
Term
What are the 3 treatments for menorrhagia? |
|
Definition
1. NSAIDs
2. Oral and intrauterine progesterone
3. Tranexamic acid |
|
|
Term
What is the MOA of NSAIDS in treatment for menorrhagia? |
|
Definition
MOA: inhibit prostaglandins involved in uterine pain and contractions during menstruation |
|
|
Term
WHat is the MOA of tranexamic acid for treatment of menorrhagia. |
|
Definition
Inhibit fibrinolysis: Lysine analogs compete for lysine-binding sites on plasminogen and plasmin blocking their interaction with fibrin (allows increased clotting). |
|
|
Term
Which menorrhagia treatment can cause renal impairment? |
|
Definition
|
|
Term
Long term estrogen use can cause ___ |
|
Definition
|
|
Term
DysfunctionalorIrregularUterineBleeding or Bleedingfromuterineendometriumasaresultofdysfunctionalmenstrual
system–excludinganatomiclesionoftheuterus |
|
Definition
|
|
Term
Mostcommonformofnoncyclicuterinebleeding |
|
Definition
|
|
Term
The most common cause of endocrine disorder in reproductive women is ___ |
|
Definition
polycystic ovarian syndrome (PCOS) |
|
|
Term
|
Definition
amenorrhea, menorrhagia and anovulatory bleeding |
|
|
Term
PCOS is a disorder of ___ excess. |
|
Definition
|
|
Term
What is the pathophysiology of anovulatory bleeding? |
|
Definition
1. Inabsenceofovulationinthenormal menstrualcycle,progesteroneisnot producedandtheendometriumcontinues toproliferateunderestrogenproduction.
2. Eventually– endometriumbecomestoo thickthatit cannotcontinuetoexpand underestrogenstimulation
3. Thisresultsinunorganized,sporadic sloughing endometrium characterizedby variableheavybleedingofanovulation |
|
|
Term
__ often is recommended treatment for managing acute bleeding episodes of anovulatory bleeding. |
|
Definition
|
|
Term
Definedas crampylowerabdominaldiscomfortthatbeginswiththe onsetofmenstrualbleedingandgraduallydecreasesoverthenext12–
72h
|
|
Definition
|
|
Term
What are the 2 types of dysmenorrhea. |
|
Definition
Primarydysmenorrhea – painwithnormalpelvicanatomy&physiology
Secondarydysmenorrhea–associatedwithunderlyingpelvicpathology |
|
|
Term
Most significant mechanism for primary dysmenorrhea is release of ____and other mediators in menstrualfluid–which initiates an inflammatory response and vasopressin-mediated vasoconstriction |
|
Definition
|
|
Term
Endometriosis should be suspected in women with ___ and ___ |
|
Definition
dysmenorrhea and pelvic pain |
|
|
Term
Name and describe the 2 etiology theories of endometriosis and which one is more accepted. |
|
Definition
1. Metastatic theory = more accepted = endometrial tissue is implanted in abnormal position.
2. Metaplastic theory = endometrial tissue arises directly from mesothelium of pelvic or abdomen. |
|
|
Term
1st line treatment for endometriosis. |
|
Definition
Combined hormonal contraceptives or progestins |
|
|
Term
Pharmacological treatment for endometriosis involves inducing __ or ___ state. |
|
Definition
pseudopregnancy or pseudomenopausal state |
|
|
Term
Give the routes of administration for the GnRH agonists:
-Leuprolide (Lupron)
- Goserelin
- Nafarelin |
|
Definition
-Leuprolide (Lupron) = IM
- Goserelin = SQ
- Nafarelin = Intranasal |
|
|