Seminal Fluid Analysis Flashcards
purpose for seminal fluid analysis
evaluate infertility
post vasectomy
cells that produce sperm
Sertoli cells in seminiferous tubules of testes
semen components
fructose, flavin, proteins, prostaglandins, citric acid, zinc, enzymes (ACID PHOSPHATASE)
Bulbourethral glands
secrete fluid that lubricates the penis & neutralizes urethra
Testes & epididymis
sperm produced in testes & mature in epididymis
Prostate
FIRST PORTION OF EJACULATE- thin milky fluid
contains most of the sperm!!!!
acidic
contains acid phosphatase & proteolytic enzymes resulting in liquefaction
Seminal vesicles
LAST FRACTION OF EJACULATE major contributor of volume alkaline enzymes necessary for coagulation supplies fructose, flavin & other nutrients
collection
several samples over 3 month period
2-7 days abstinence
deliver to lab within one hour maintained at body temp
appearance
normal: homogeneous, gray-white, opalescent
abnormal: clear, red, yellow green etc
normal coag & liquefaction
completely liquefied within 60 minutes at room temp
can treat with chymotrypsin if not completely liquefied
normal volume
> 1.5 ml
normal viscosity
semen falls from pipet in drops or threads are
normal pH
> 7.2
normal motility
50% or more of sperm should show moderate to strong linear or forward progression
>32% progressively motile (!!!!!!!!!)
Sperm concentration
dilute specimen & perform count on hemocytometer
normal: 15-150 mil/ml
calculation for sperm concentration
cells x dilution
———————–x 1000
volume
total sperm count
sperm concentration x total volume
normal > 39x10^6 / ml
stains
Wright, Giemsa, Papanicolauo stains
morphology
stain use 100x oil, observe 200 sperm
normal >4% normal morphology
head
oval
2.5-3.5 um wide & 4.0-5.0 um long
head to length ratio should be 1.5-1.75
midpiece
6-7.5 um long & thicker than tail but
tail
slender, uncoiled @ least 45 um long
sperm vitality
done when motility
agglutination
even small amount is abnormal
production of anti-sperm antibodies
clumping = bad