FPH - Anatomy of the Male Reproductive System

___________________ is the primary reproductive organ of males. It is the site of spermatogenesis.

___________________ is the primary reproductive organ of males. It is the site of spermatogenesis.

Testes

Testes
Exocrine Function: ______________________
Endocrine Function: _________________________

Sperm production
Testosterone production

_______________________ is the process of formation and development of sperm cells

Spermatogenesis

There are _____ testes and they each have a ___________ appearance

2
hanged

Each testis is connected to the trunk via the _________________

spermatic cord

The spermatic cord holds:
1. ________________ = transport nutrients
2. ______________ = ensure activities take place
3. ____________________ = bring sperm and other contents to where they have to be directed

Blood vessels
Nerves
Ductus (vas) deferens

2 coverings of testes:
1.
2.

1. tunica albuginea

2. Septa

_______________________ is the fibrous connective tissue capsule that surrounds each testis

Tunica albuginea

________________ are the extensions of the capsule that extend deeper into the testis and divide it into lobules

Septa

Each lobule contains: ________ seminiferous tubules

1-4

The Path of Sperm (From the testes to the external environment)
1.
2.
3.
4.
5.

1. Seminiferous tubules

2. Rete testis

3. Epididymis

4. Ductus (vas) deferens'

5. Urethra

_______________ are known as the “Sperm-forming factories”. These empty the sperm into the rete testis that is located to one side of the testis. After the rete testis, the sperm enters the first part of the duct system

Seminiferous tubules

_________________________ aid in the delivery of sperm to the body exterior or to the female reproductive tract

Male duct system

_________________ is the first part of the male duct system. It hugs the posterior surface of the testis. It is highly ________________ tube about ______ meters. It provides a temporary storage site for the immature sperm.

Epididymis
convoluted/coiled
6

It takes about ________ days for the sperm to mature and develop the ability to swim as they travel along the epididymis

20

The ___________________ runs upward from the epididymis via the spermatic cord into the inguinal canal, to the pelvic cavity and then arches over the superior aspect of the urinary bladder.

The sperm travel to the ____________ and are emptied to the ____________________ that passes through the prostate to merge with the urethra

ductus (vas) deferens
ampulla
ejaculatory duct

During __________________, thick layers of smooth muscles in its walls create _____________________ that create the sperm forward

ejaculation
peristaltic waves

_____________________ is where a small incision is made to the scrotum then the ductus deferens is cut and tied.

Sperm no longer leave the body and later die and are phagocytized, but testosterone is still produced so the man retains his sex drive and secondary sex characteristics

vasectomy

___________________ is the terminal part of the duct system. It is the SAME PORTAL for urine and semen. It extends from the base of the urinary bladder to the tip of the penis.

Urethra

What are the 3 regions of urethra:
1.
2.
3.

1. Prostatic urethra

2. Membranous urethra

3. Spongy (penile) urethra

___________________ is a region of the urethra that is surrounded by the prostate gland

Prostatic urethra

_________________ is a region of the urethra spanning the distance from the prostatic urethra to the penis

Membranous urethra

________________ is a region of the urethra running within the length of the penis and opening to the body exterior via the external urethral orifice

Spongy (penile) urethra

The __________________ are glands that produce the bulk of semen, the sperm-containing fluid that is pushed out of the reproductive tract during ejaculation

Accessory glands

What are the 3 accessory glands?
1.
2.
3.

1. Seminal vesicles

2. Prostate gland

3. Bulbourethral glands

________________ are 2 vesicles found in the base of the bladder. It produces 60% of seminal fluid or the liquid portion of the semen.

Seminal vesicles

The duct of each seminal vesicle joins the ___________________ on the SAME side to form the EJACULATORY DUCT so that sperm and seminal fluid enter the urethra together during ejaculation

ductus (vas) deferens

The __________________ is a single doughnut-shaped structure that encircles the prostatic urethra. It can be found inferior to the urinary bladder. It plays a role in activating sperm.

Prostate gland

____________________ are tiny, pea sized glands. It can be found inferior to the prostate gland.

Bulbourethral glands

___________ environments are not favorable for sperm

acidic

_____________________ is known as the “end product”. It is a milky white, sticky mixture of sperm and accessory gland secretions. It dilutes sperm to enhance motility

_______________ - transport medium for nutrients and chemicals that protect the sperm and aid movement

Semen
Liquid portion

__________________ provides the sperm’s main energy fuel

fructose

___________________ are “tadpoles” that contain little cytoplasm or stored nutrients

mature sperm

The pH level of semen is ____________ (7.2-7.6)

alkaline

The external genitalia include:
1.
2.

1. Scrotum

2. Penis

________________ is the divided sac of skin that hangs outside the abdominal cavity, between the legs and at the root of the penis. It provides a temperature about 3 degrees celcius lower than body temperature

scrotum

______________ is the male organ of copulation that delivers sperm to the female reproductive tract

penis

What are the 3 regions of penis?
1. (base of the penis)
2. (enlarged tip)
3.

1. Shaft

2. Glans penis

3. Prepuce

_________________ is the folded cuff or skin around the proximal end of the glans penis. It is surgically removed by procedure of circumcision

Prepuce

The 3 elongated areas of erectile tissue that surround the spongy urethra:
1.
2.
3.

1. Corpora cavernosa

2. Corpus spongiosum

3. Spongy urethra

_______________ happens when this erectile tissue fills with blood during sexual excitement

erection