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Male reproductive system
12
...
Its function is to make testosterone (male hormone)
and sperm (male gametes), and deliver the sperm into the female for
fertilisation (k Fig
...
2)
...
5 Circumcision is the
removal of the prepuce (foreskin)
by surgery, and is carried out by
some religious groups
...
ureter
seminal vesicles
urinary bladder
pubic bone
ejaculatory duct
vas deferens
prostate
corpus cavernosum
anus
corpus spongiosum
bulbourethral
gland
epididymis
urethra
testis
scrotum
glans penis
prepuce (-> Box 12
...
12
...
12
...
1 Testes
The testes (testicles) are two small ovoid structures about 5 cm in length, with the left
testicle generally located about 1 cm lower than the right
...
6)
...
12
...
A fibrous capsule surrounds each testis and sends out partitions
to divide the interior into 200 or more lobules
...
12
...
Epididymis
The epididymis is a tightly coiled tube in a fibrous casing that lies along the top and behind the
testis and connects the testis to the vas deferens
...
Sperm are then stored in the tail (lower) region of
the epididymis until ejaculation
...
It goes over the top of the
bladder before joining with the seminal vesicle to form
Box 12
...
The cause
of undescended testicles
(cryptorchidism) is not fully
understood but may be the result of
hormonal problems
...
7 Vasectomy is a surgical
procedure in which the vas deferens
is cut and sealed off, thereby
preventing sperm from reaching
the seminal vesicle and entering the
urethra
...
the ejaculatory duct which opens into the urethra – the tube that carries both
urine and sperm
...
7)