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Year 1
Renal and pelvis
Male reproductive system
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Megan Vann
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Cards (13)
Point and shoot:
Point =
erection
= parasympathetic
Shoot =
ejaculation
= sympathetic
Urethra is within the
corpus
spongiosum
End of the penis =
glans
Top of penis =
dorsal
surface
Underside of penis =
ventral
surface
Abnormal urethral openings:
· Hypospadias= urethra opening on
ventral
aspect of penis
· Epispadias= urethra opening on
dorsal
aspect of the penis
Sperm is stored in the
epididymis
Travels via the ductus (
vas
)
deferens
Ductus deferens passes through the
inguinal
canal
Fluid from the bladder (
fructose
) enters the ductus deferens
Joins the
seminal
vesicle and then enters the
prostate
Seminal vesicle provides
60
% of fluid found in sperm
Zones of the prostate:
Central
zone - enlargement tends to be benign
Peripheral
zone - enlargement tends to be cancerous
Prostate secretes own fluid into semen -
proteolytic
enzymes - prostate specific
antigen
The testes are responsible for
sperm
production and
hormone
synthesis
Supplied by the paired
testicular
arteries from the abdominal aorta at
L2
Left
testicular vein drains into the left renal artery
Right
testicular vein drains directly into the inferior vena cava
The pampiniform plexus is a network of many small
veins
found in the male spermatic cord.
Dilation of the plexus =
varicocele
More common on the
left
as the
left
testicular vein is longer and drains into the
left
renal vein at an angle
Renal cancer can present with a
varicocele
Phymosis:
Cannot retract
foreskin
Infection
Malignancy
Foreskin
balloons when trying to urinate
Paraphymosis:
Strangulated
penis
Can use concentrated
glucose
to act as a diuretic to release fluid
Dorsal
split
Will need planned
circumcision
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