Our Lady of Fatima University INTERNAL GENITALIA
College of Pharmacy 1. Testis
- Intra-abdominal during fetal life.
Anatomy and Physiology - Descends and covered by tunica vaginalis from
peritoneum.
- Deep covering tunica albuginea
- Divides the testis into lobules.
- Each lobules contains a coil tubes which known
MALE REPRODUCTIVE SYSTEM
as seminiferous tubule.
Functions:
Seminiferous tubule is a site where spermatocytes
- Production and transport of male sperm cells developed and eventually will become
through the testis. spermatozoa. It is the area where spermatogenesis
- Production of male hormones like testosterone occurs.
coming from testis which secreted by interstitial
Cells in the Testis
cells of Leydig.
Spermatogenic cells – grow and mature to form
EXTERNAL GENITALIA
mature sperm cells.
The testis is covered externally by a stratified squamous
Sertoli cells/ sustentacula cells
keratinized skin which is wrinkled known as scrotum.
- to nourish the developing sperm.
1. Scrotum
- It is part of the blood testis barrier, which is the
- Wrinkled sac
tightest blood barrier in the body.
- It has a contractile muscle which is smooth
- support and protect sperm cells.
muscle known as Dartos muscle.
- Regulated testicular temperature. Interstitial cells of Leydig – located between
- Spermatogenesis requires 2-3°C lower than seminiferous tubules and it secretes testosterone.
body temperature.
Male Reproductive duct
2. Penis
The sperm that has been produced by the seminiferous
Body – made up of 3 erectile tissues. tubule will go to tubuli recti or straight tubule and goes
to a network of tubules known as rete testis. From the
a. Corpora cavernosa
rete testis it passes to the efferent ductules and
b. Corpus spongiosum
eventually will stored in the epididymis. Before they are
- Contains spongy urethra, which is the last tube
finally ejected in vas deferens.
that delivers the semen.
Root – proximal, which is made up of bulb and crura.
Epididymis
3. Glands Penis - Comma shaped, 4cm long, located posterior to
- Expanded distal end of corpus spongiosum. the testis, with head, body and tail.
- Distal terminal urethra is expanded called fossa - Tail is continuous vas deferens.
navicularis.
- Glands penis is covered by a piece of skin called Functions:
prepuce (the one that is removed during - Site of sperm maturation mobility and capable
circumcision) and attached to a fibrous tissue to fertilize an ovum (10-15 days)
known as frenulum. - Storage of sperm cells
- - Propel sperm cells to vas deferens.
College of Pharmacy 1. Testis
- Intra-abdominal during fetal life.
Anatomy and Physiology - Descends and covered by tunica vaginalis from
peritoneum.
- Deep covering tunica albuginea
- Divides the testis into lobules.
- Each lobules contains a coil tubes which known
MALE REPRODUCTIVE SYSTEM
as seminiferous tubule.
Functions:
Seminiferous tubule is a site where spermatocytes
- Production and transport of male sperm cells developed and eventually will become
through the testis. spermatozoa. It is the area where spermatogenesis
- Production of male hormones like testosterone occurs.
coming from testis which secreted by interstitial
Cells in the Testis
cells of Leydig.
Spermatogenic cells – grow and mature to form
EXTERNAL GENITALIA
mature sperm cells.
The testis is covered externally by a stratified squamous
Sertoli cells/ sustentacula cells
keratinized skin which is wrinkled known as scrotum.
- to nourish the developing sperm.
1. Scrotum
- It is part of the blood testis barrier, which is the
- Wrinkled sac
tightest blood barrier in the body.
- It has a contractile muscle which is smooth
- support and protect sperm cells.
muscle known as Dartos muscle.
- Regulated testicular temperature. Interstitial cells of Leydig – located between
- Spermatogenesis requires 2-3°C lower than seminiferous tubules and it secretes testosterone.
body temperature.
Male Reproductive duct
2. Penis
The sperm that has been produced by the seminiferous
Body – made up of 3 erectile tissues. tubule will go to tubuli recti or straight tubule and goes
to a network of tubules known as rete testis. From the
a. Corpora cavernosa
rete testis it passes to the efferent ductules and
b. Corpus spongiosum
eventually will stored in the epididymis. Before they are
- Contains spongy urethra, which is the last tube
finally ejected in vas deferens.
that delivers the semen.
Root – proximal, which is made up of bulb and crura.
Epididymis
3. Glands Penis - Comma shaped, 4cm long, located posterior to
- Expanded distal end of corpus spongiosum. the testis, with head, body and tail.
- Distal terminal urethra is expanded called fossa - Tail is continuous vas deferens.
navicularis.
- Glands penis is covered by a piece of skin called Functions:
prepuce (the one that is removed during - Site of sperm maturation mobility and capable
circumcision) and attached to a fibrous tissue to fertilize an ovum (10-15 days)
known as frenulum. - Storage of sperm cells
- - Propel sperm cells to vas deferens.
