Male repro organs

Question 1

Label

Answer 1

Question 2

What is the name of the canal that the testis passes through during development?

Answer 2

Inguinal canal

During embryological development the testis move from the internal abdominal cavity, through the anterior abdominal wall, and lie as part of the external genitalia in the scrotum.

Question 3

Name the fascial layers of the testis

Answer 3

Question 4

Where is the cremastor muscle found?

Answer 4

located between the internal and external layers of spermatic fascia, cremaster covers the testes and spermatic cord.

Question 5

What are the contents of the spermatic cord

Answer 5

1. Ductus deferens.
2. Testicular artery
3. Cremasteric artery.
4. Sympathetic nerve fibers
5. Lymphatic vessicles
6. Genital branch of the genitofemoral nerve

.

Question 6

Function of the ductus vas deferens

Answer 6

Transport sperm from storage site in testes to the urethra

Question 7

What is the tough outer fibrous layer of the testes called?

Answer 7

Tunica vaginalis

Question 8

What is the tunica vaginalis

Answer 8

The distal part of the contents of the spermatic cord, the epididymis, and most of the testis are surrounded by a collapsed sac, the tunica vaginalis. Consequently, the testis and epididymis—directly covered by the tunica’s visceral layer—are mobile within the scrotum.

Question 9

What are the two layers of the tunica vaginalis

Answer 9

Visceral and parietal tunica vaginalis

Question 10

What fluid is present between the two layers of the tunica vaginalis?

Answer 10

The small amount of fluid in the cavity of the tunica vaginalis separates the visceral and parietal layers, allowing the testis to move freely in the scrotum.

Question 11

What is a hydrocele

Answer 11

A hydrocele is the presence of excess fluid in a persistent processus vaginalis. This congenital anomaly may be associated with an indirect inguinal hernia.

Question 12

What causes a hydrocele

Answer 12

The fluid accumulation results from secretion of an abnormal amount of serous fluid from the visceral layer of the tunica vaginalis. The size of the hydrocele depends on how much of the processus vaginalis persists

Question 13

What is a haematocele & cause

Answer 13

Collection of blood in the tunica vaginalis that results, for example, from rupture of branches of the testicular artery by trauma to the testis

maybe due to trauma

Question 14

name the blood supply to the testes &what level are these arteries given off

Answer 14

Branch of the abdominal aorta called the testicular artery.

• L2 (just under renal arteries)

Question 15

What is the term used for the 8-12 anastomosing veins associated with the testis?

what is their function

Answer 15

Pampiniform plexus

• venous return & temperature regulation

The pampiniform plexus is part of the thermoregulatory system of the testis (along with the cremasteric and dartos muscles) helping to keep this gland at a constant temperature. The veins of each pampiniform plexus converge superiorly, forming a right testicular vein, which enters the inferior vena cava (IVC), and a left testicular vein, which enters the left renal vein.

Question 16

Into which vein does the right and left testicular vein drain into

Answer 16

Right = inferior vena cava

Left= Left renal vein

Question 17

What is varicocele?

And what is it usually caused by

Answer 17

When the pampiniform plexus of veins become dilated.

Varicoceles may result from defective valves in the testicular vein, but kidney or renal vein problems can also result in distension of the pampiniform veins.

Question 18

Which two lymph node groups receive lymph from the testis?

Answer 18

Lumbar and paraaortic nodes

Question 19

Where does lymph from the … drain

prostate

Answer 19

Prostate-Internal iliac and sacral lymph nodes

Seminal vesicle- Internal & external iliac lymph nodes

Scrotum- Superficial inguinal lymph nodes

Penis- Superficial inguinal lymph nodes

Question 20

Where does lymph from the seminal vesicle drain

Answer 20

Internal and external iliac lymph nodes

Question 21

Where does lymph from the scrotum drain

Answer 21

Superficial inguinal lymph nodes

Question 22

Where does lymph from the Penis drain

Answer 22

Superficial inguinal lymph nodes

Question 23

function of Epididymis

Answer 23

attached to the body of the testis, and stores sperm that is produced by the testis.

Question 24

function of Vas Deferens

Answer 24

muscular tube which arises from the tail of the epididymis, traverses the inguinal canal and enters the pelvis by crossing over the external iliac vessels. It terminates by joining the duct of the seminal gland to form the ejaculatory duct.

transports mature sperm to the urethra in preparation for ejaculation

Question 25

Function of Seminal Glands (Vesicles)

Answer 25

These paired structures are located on either side of the posterior surface of the bladder, note their relation to the ureter, the vas deferens and the prostate gland. What secretions are produced by the seminal vesicles? .Seminal fluid- energy source for sperm cells, prostaglandins etc..

Question 26

Function of prostate gland

Answer 26

> production of seminal fluid The prostate gland is fused to the inferior part (neck) of the bladder and surrounds the prostatic urethra. Examine the male pelvis diagram to understand the location and relations of the prostate to the bladder and seminal gland. What secretions are produced by the prostate? .. Prostatic fluid, a thin, milky fluid, provides approximately 20% of the volume of semen (a mixture of secretions produced by the testes, seminal glands, prostate, and bulbo-urethral glands that provides the vehicle by which sperms are transported) and plays a role in activating the sperms.

Question 27

Function of Bulbourethral (Cowper’s) Glands

Answer 27

These are small, paired structures located in the urogenital diaphragm which empty into the penile/spongy urethra. The clear, colorless, mucoid product of the secretory cells is released prior to ejaculation as sexual arousal begins. * The product of the secretory cells serves to **neutralize the acid** environment of the urethra to protect the sperm cells as they traverse it during ejaculation. It also **adds some lubrication** for the penis during sexual intercourse. * The secretion is also added to the seminal fluid where it helps to neutralize the acidic secretions of the vagina.

Question 28

Label

Answer 28

Question 29

WHat is the tunica albuginea vs the tunica vaginalis

Answer 29

The tunica vaginalis is the pouch of serous membrane that covers the testes. It is derived from the vaginal process of the peritoneum, which in the fetusprecedes the descent of the testes from the abdomen into the scrotum. Tunica vaginalis. The tunica albuginea is a layer of fibrous tissue capsule covering the testis. It is covered by the tunica vaginalis, except at the points of attachment of the epididymis to the testis, and along its posterior border, where the spermatic vessels enter the gland. It is thicker than the tunica albuginea of the ovary.

Question 30

What is present in between the semifernous tubules

Answer 30

intersitial cells of leyde- production & secretion of male hormone testosterone

Question 31

has the narrowest diameter?

Question 32

Which part of the male urethra is the narrowest?

Answer 32

Membranous urethra

Question 33

Which part of the male urethra is the widest?

Answer 33

Prostatic urethra

Question 34

What 3 arteries are contained within the spermatic cord?

Answer 34

Testicular, (deferential), cremasteric artery

Question 35

What 3 nerves are contained within the spermatic cord?

Answer 35

Genital branch of genitofemoral, cremasteric nerve, sympathetic nerve fibres

Question 36

What 3 fascias are contained within the spermatic cord?

Answer 36

External spermatic fascia, cremasteric fascia, internal spermatic fascia