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Repro Exam 1
TTUHSC Repro Exam 1
142
Physiology
Professional
01/13/2013

Additional Physiology Flashcards

 


 

Cards

Term
Generate male gametes and synthesize testosterone.
Definition
Testes
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
Transmits semen.
Definition
Penis
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
23-48 hours
Term
What is the pH of semen?
Definition
7.5
Term
Testosterone is secreted by ___.
Definition
Leydig cells
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
5-alpha reductase
Term
DHT binds to ___in the cytoplasm
Definition
Androgen receptors
Term
__ converts testosterone to estradiol via a CYP19 metabolism.
Definition
Aromatase
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
3
Term
__ makes estrogen that helps with spermatogenesis.
Definition
Sertoli cells aromatase
Term
___ is used to treat osteoporosis in older.
Definition
Testosterone
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
hemodynamic changes
Term
For the male sexual act to occur,the sensory nerve signal has to originate from the ___.
Definition
Glans penis
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
Parasympathetic impulses
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
Resolution
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
Alkylated androgens
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
Alkylated androgens
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
What is gynecomastia?
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
Prostate cancer
Term
Prostate cancer is treated with ____
Definition
androgen receptor antagonists = flutamide
Term
Siteofovumproductionand release
Definition
Ovary
Term
Transport site of fertilization for ovum
Definition
Uterine or fallopian tube
Term
Site of implantation and growth of developing embryo (blastocyts). 
Definition
Uterus
Term
What are the 3 parts of a uterus.
Definition

1. Fundus

2. Body

3. Cervix

Term
Site of delivery of sperm.
Definition
Vagina
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
FSH 
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
Describe ovulation.
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 humanis ____
Definition
17-β-estradiol > estrone& estriol
Term
Steroidal estrogens arise from ____or ____by aromatization catalyzedby _____whichis localized in ovariangranulosa cells
Definition

androstenedione or  testosterone; 

aromatas

Term

[image]

Label: A to G

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
Gonadotropins (FSH & LH)
Term
Estrogeninhibits ___ inthebonesand stimulatesbonegrowth
Definition
osteoclastic activity
Term
Osteoporosis occursafter menopause due to ___.
Definition
estrogen deficiency
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
Estrogen& progesterone
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
Inhibireleasefrom thcorpuluteum
Term
Menopause occurs around what age?
Definition
45-50 y/o
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
Delayed ejaculation
Term
What type of sexual dysfunction occurs when ejaculatepassesintothebladder,insteadoftoward theanteriorurethra andoutofthepenis?
Definition
Retrograde ejaculation
Term
Spermareinsufficientinnumber,haveabnormalmorphology, orhaveinadequatemotility,andfailtofertilizetheovum.
Definition
Sexual dysfunction = Infertility
Term
What is the first line therapy for erectile dysfunction?
Definition
PDE-5 inhibitors
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
PDE-5
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
More than 4 hours
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
Testosterone
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
Amenorrhea
Term
Abnormallyheavyandprolongedmenstrualperiodat regularintervals.
Definition
Menorrhagia
Term
Abnormaluterinebleedingthatoccurswithout ovulationtakingplace.
Definition
Anovulatory Bleeding
Term
Conditionofpainduringmenstruationthatinterferes withdailyactivities
Definition
Dysmenorrhea  
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
___ ithe moscommocaus for amenorrhea.  
Definition
Unrecognized Pregnancy -- always check to see if they are pregnant if they are not getting menses.
Term
Secondaramenorrhea is commonlcauseby this 4 factors:
Definition

1. Hypothalamic suppression

2. Hyperprolactinemia

3. Ovarian disorder

4. Uterine disorder

Term
PrimaryAmenorrheacanresultfrom
Definition
Congenitaanomaly  or  Imperforate   hymen
Term


SecondarAmenorrhea 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&Lsecretion 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 reproductivyears

Definition
5-10
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
Tranexamic acid
Term
Long term estrogen use can cause ___
Definition
thromboembolism
Term

DysfunctionalorIrregularUterineBleeding or Bleedingfromuterineendometriumasaresultofdysfunctionalmenstrual

system–excludinganatomiclesionoftheuterus

Definition
Anovulatory bleeding
Term
Mostcommonformofnoncyclicuterinebleeding
Definition
Anovulatory bleeding
Term
The most common cause of endocrine disorder in reproductive women is ___
Definition
polycystic ovarian syndrome (PCOS)
Term
PCOS can present as ___.
Definition
amenorrhea, menorrhagia and anovulatory bleeding
Term
PCOS is a disorder of ___ excess.
Definition
androgen
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 treatmenfor managing acute bleeding episodes of anovulatory bleeding.

Definition
Estrogen 
Term

 

Definedas crampylowerabdominaldiscomfortthatbeginswiththe onsetofmenstrualbleedingandgraduallydecreasesoverthenext12

72h

 

Definition
Dysmenorrhea
Term
What are the 2 types of dysmenorrhea.
Definition

Primarydysmenorrhea – painwithnormalpelvicanatomy&physiology

 Secondarydysmenorrhea–associatedwithunderlyingpelvicpathology

Term

Mossignificant mechanisfor primary dysmenorrhea is releasof ____and other mediators in menstrualfluid–which initiates an inflammatorresponse and vasopressin-mediated vasoconstriction

Definition
prostaglandin
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

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