Sex Flashcards
Up until week ___ of fetal development, men and women are basically the same (undifferentiated)
Week 8
SRY (sex-determining region of the Y chromosome) develops _____ hormone, causing degeneration of female structure and development of male structures. If you don’t have SRY, then what degenerates?
Anti-mullerian hormone
If you don’t have SRY, wolffian ducts degenerate (they would otherwise lead to epididymis, vas deferens, seminal vesicle structures)
What makes up the testes? What type of cells?
Seminiferous tubules (stroll cells, spermatogonia) Interstitial Leydig cells
What makes up the excretory ducts of the male reproductive system? What goes through there?
Ductus epididymis, ductus (vas) deferens, ampulla, urethra
SPERM goes through there, it is made in the testes
What makes up the accessory glands that sperm does not travel through?
Seminal vesicles
Prostate
Bulbourethral (Cowper’s) gland
Leydig cells make what?
Steroid hormone- testosterone
Cellular picture they have white spots (these are fats to make cholesterol to make steroids)
Male: LH stimulates ____ cells to produce ____
Leydig cells to produce testosterone
Male: FSH stimulates ____ cells to produce ____
Sertoli cells to produce sperm
Testosterone plus FSH stimulates ____ cells to produce ____
Sertoli cells to produce sperm
Sperm comes from spermatogonia
What is spermatogonia?
A stem cell that gives rise to sperm cell; after mitosis, one daughter cell remains a stem cell and the other daughter becomes four sperm cells
1 primary spermatocyte produces how many sperm?
4 sperm
One daughter cell becomes primary spermatocyte, undergoes two rounds of meiosis to produce secondary spermatocytes → early spermatid cells→ late spermatid cells (1 primary spermatocyte →4 sperm)
Testes and ovaries are immune-privileged, meaning what?
These organs don’t mature until puberty
If B and T cells memory cells against them develop before puberty we could get antibodies made against them later on
Blood-testes barrier formed by tight junction on Sertoli cells
hCG resembles ____, so it stimulates Leydig cells to produce testosterone
LH
Taking hCG with testosterone prevents testicular atrophy, also will test positive for pregnancy
BPH: benign prostatic hyperplasia
What is the problem? What zone of the prostate does it effect?
Epithelial cells replicate
Only problem is compression of the urethra, leads to slower flow in urine and possible obstruction
Starts in the central zone, compresses urtethra sooner
Carcinoma of prostate
Starts in peripheral zone, will grow a lot before causing urinary symptoms (slow flow)
Note: More men die WITH prostate cancer than FROM prostate cancer, age of diagnosis is the big factor
T/F: Digital rectal exam is to determine if someone has BPH
FALSE, they look for carcinoma in the peripheral zone of the prostate
Every guy has BPH, so we don’t care, also BPH is in the central zone, so we couldn’t feel it
STI vs. STD
STI: they are infectious, spreading it, whether they have symptoms or not
STD: they have symptoms
These are spread by body fluids: sex, blood
Genital herpes: HHV2
Once you get it, you can’t get rid of it
Painful superficial lesions, re-occur in same place, starts with vesicles
Chancroid H ducreyi
Bigger, deeper ulcerations
Syphilis
Causes chancres, painless lesions
Shows spirochetes on dark field examination (shows light around the specimen)
HHV1 vs HHV2
HHV1 on the face, coldsores (90% of population)
HHV2 below the waist, genital herpes (1% of population)
You CAN get either in either place, but these are where they are most common
Note: HSV2 and HHV2 are SAME virus
Can we get rid of these HHV1/2 viruses?
No bc to kill the virus we have to kill the nerve
What is the difference in ulceration between syphillis, herpes, and chancroid?
Herpes is the smallest (less than 1 cm)
Then syphillis (1.5-2 cm)
Charcroid is the largest ulceration (over 2 cm)
Chlamydia
Hard to detect (Intracellular bacteria)
Usually asymptomatic (treatable, but they never know they have it)
Problem: causes pelvic inflammatory disease, which leads to infertility (second leading cause of infertility)
Genital warts (condylomata acuminata): three ways to kill them? Causes?
Freeze
Burn
Acid
Caused from HPV
Gonorrhea: what is it? Symptoms? Treatment? This one is less common
Gram-negative diplococci Pain and burning sensation felt during urination Males have white/yellow discharge Females have green/yellow discharge Can be asymptomatic Treat with antibiotics
Trichomonas vaginalis: what is it? Symptoms?
Most common pathologic protozoan infection in the world
Infects men and women equally, but men are asymptomatic and women get inc pH (from 3 to 6) in vagina leading to E coli and candida albicans
Scabies
Small arachnids, they like soft, warm, tight skin so they are found where clothing is tight
Symptoms: itching
Test question: Which STD has the smallest ulceration?
HERPES