Reproductive syst. Flashcards
Male reproductive tract-important structures
Seminal vesicles and prostate gland=support sperm
-prostate is below bladder
Prostate urethra proximal to ejaculatory duct
Urethra=sperm travels through
Testis houses sperm/spermatogenous
-sperm goes through epidermis–>vas(ductus) deferens to eject. duct
Prostate(bladder issues)and testis(Affecting fertility)=dangerous dis.
Female reproductive tract-important structures
Ovary(ovum/oogenesis)–>uterin fallopian tube (oviduct) –>uterus/uturim–>vagina –>external genital=vulva
Ovulation=2wks after last period
-implantation is 2 wks after fertilization
-prego.=4wks after ovulation
Infertility
Cnt conceive w/in 1 yr of attempting to conceive
The number of incidence has not incre. over the years
Screen and tx(med/therapy)
-assisted reproductive tech(ART) only tx 3% of cases
Infertilely-female cn be fertile even thought gametes are produce?
No, females cn be infertile w/ gamete production
Infertility-female and ovary
Impacts ova production and decre. fertility -oocytes are affected Causes -endocrine :hypothalamus/pit. dis. :gonadotropin production insuff. -ovarian dis.=polycystic ovarian synd. :caused by gonadotropin insuff./direct ovarian damage (damage oocyte) -other causes :chemo/pelvic irradiation :destroy developing oocytes
Infertility-female and tubal/uterine
Tubal=oviducts receives structural damage
-prevent ova movement/fertilization process
-fertilization=sperm cnt travel in tube which cnt fertilize
Uterine
-Damage prevent implantation or maintenance of prego.
-damage uterine wall
Infertility-male types
Pretesticular
Testicular
Post-testicular
Infertility-female and tubule/uterine Thyroid dis. causes
Decre. T3/4=incre. thyrotropin releasing hormone
- cause PRL secretion
- PRL cn decre. GnRH
Infertility-female and tubule/uterine-Androgen excess causes
Affects oocyte develop
Anovulation and amenorrhea
Genetic, environment cause
Infertility-female and tubule/uterine- Hyperprolactinemia
Both inhibit dopamine from inhibiting PRL secretions
Drugs change PRL secretion
Direct pit. damage
Infertility-female and tubule/uterine causes
Infection Pelvic/abdo. surgeries -cn cause scarring adhesion Toxin exposure=endometrium damage Thyroid dis. Androgen excess Hyperprolactinemia(both dnt dopamine to inhib. PRL secretion) Dopamin is effected by fertility -change gonadotropin release -direct effect on follicles -have dopa Recep.
Infertility-female and tubule/uterine infection causes
Infection
- from inflamation, scars and adhesion(or implantation difficulty)
- block transport(stenosis)/implantation
- ectopic prego. possible
Infertility-female types (basic)
Ovulatory
Tubule
Uterine
Infertility-male and pretesticular
Causes
-endocrine disorder=hormone promoting spermatogen.
:hypothal.-pit def. –>affect horm. prod.–>decre. testosterone/spermatogen.
-drug inhib. horm. effects
:anabolic steroids initiating inhib. neg. feedback loop=decre. LH/FSH level
Factors affecting spermatogenesis
-hormones and med.
-systemic dis.
-environment/lifesyle factors
-dietary def.
-toxins
Infertility-male and testicular affects what?
Direct effect on testicular function
Infertility-male testicular causes(basic)
Direct effect on testicular function -variocele -scortal temp. Trauma Testicular torsion Infection Genetic dis. Cryptorchidism Toxin
Sexually Transmitted Dis.-Chlamydia (chlamydia trachomatis)
Obligate intracell bact.
Lymphophathia Venerea=type of chlamydia
-AKA lymphogranuloma venereum
-infect specific sterotypes (L-type)
:Chlaym. causautive agent
-Chonic
:Initial small lesion
:Lesion growth=incre. lymph. node swelling
*goes to GIT lymph node
*cn rupture if not tx=cause fibrosis/stricture in Lower urogential tract structures and lymph node
-other genital chlamydia apperance ~gonorrhea =need microbio analysis
Infertility-male w/ direct effect on testicular function, testicular damage
Direct effect testicular function (develop. issue)
-Variocele=abnomral dialted scrotal vn.
:MC cause of decre. male infertility
:vn=valvular issues which causes backflow
*b/c gravity/pull
*incre. blood in scrotal tissue w/in
-tunica vaginalis layers
-Incre. scortal temp.
:caused by (affect sperm tissue)
*varicocele
*tight clothing b/c scrotum close to body
*seasonal temp. change
*fever
Testicular damage
-trauma
:early intervention=reversible
:damage=atrophy
:Compartmentalization to sep. sperm from rest of body is brkdwn
*antisperm antBD is form
*sep. help keeps sperm alive
-Testicular torsion of spermatic cord
:disrupted blood flow
:brkdwn tissue
:2 circumstances
*neonatal=in utero/shortly after birth(not anatomic defect)
*adult but mainly adolescence
-sudden onset of testicular pain
-no apparent inj./cause
-linked to bilat. anatomic dfect that incre. mobility
:A vascular disorder=twisting of spermatic cord decre./ inhib. venous drain
*thickened vn’s wall=pampiniform plexus
*remain patent
:infarction b/c decre. venous draining
:full recovery if fixed in 6hrs.
Infertility-male and other testicular causes
Genetic dis. impacting sperm
-klinefelter synd.=chromo abnorm. (XXY)
:lydig cell malfunction
:decre. serum testosteron
:incre. FSH
-microdeletion on Y chromo.
Cryptorchidism =complete/partial failure of testes descend during fetal develop.
-developing disorder
-normally w/in body during embryogen. and descend during fetal develop.
-incre. temp=decre. function
-microscopic structrual changes @ 2yrs. old
:inhib. germ cell develop=inhib. spermatogonia, 1ry/2dry spermatocyte, spermatids
:lost spermatogoniatissue
:hyalinzation and thick BsM
Toxin
-diff. cells r more senstivie
-cig. smoke=incre. erectile dysfunction and sperm DNA formation
-radiation/chemo affect sperm dividing cells