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Anatomy > Testes and Scrotum > Flashcards

Testes and Scrotum Flashcards

1
Q

Male Reproductive Organs

A
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2
Q

Glandular Contribution to Semen

A
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3
Q

Testosterone

A

Develop & f of testes

Sexual behavior & drive

Growth & dev of other organs & tissues

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4
Q

Testes

A

Suspended in scrotum

Scrotum- pouch of skin w/in thin muscular wall

Testes first appear 7 weeks next to kidneys

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5
Q

Descend Testes 1

A
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6
Q

Descend Testes 2

A

In the scrotum by around 7 months

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7
Q

Gubernaculum

A

Mesenchymal column of tissue that connects the fetal testis to the developing scrotum and that is involved in testicular descent

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8
Q

Scrotum

A
  1. Skin- heavily pigmented
  2. Superficial fascia- fat free layer, smooth m. fibers (dartos m. & wrinkling of skin)
  3. External Spermatic fascia
  4. Cremesteric m. & fascia
  5. Internal spermatic fascia

*dartos fascia continuous w/ Scarpa and with Colles fascia

*Scrotum forms from labioscrotal swellings (2 cutaneous outpockets from ant abd wall) that fuse to form pendulous cutaneous pouch.

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9
Q

Scrotum

A
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10
Q

Nerves of Scrotum

A

Ant scrotal n.- branches of ilioinguinal n.

Genitofemoral n.

Post scrotal n.- branches of pudendal n.

Perineal branches of post femoral cutaneous n.

*spinal anesthetic agent injected more superiorly to anesthetize scrotum anterolaterally (lumbar plexus)

Posteroinferiorly (sacral plexus)

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11
Q

Scrotal Blood supply

A

Post scrotal branches- internal pudendal a. branch

Ant scrotal branches- branch of femoral a.

Cremasteric a.- branch of inf epigastric a

V. follow a.

Lymphatics= superficial inguinal LN

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12
Q

Testes

A
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13
Q

Testes 2

A

Tunica albuginea- touch fibrous layer

Visceral layer of tunica vaginalis- serous layer

Parietal layer of tunica vaginalis- both layers separated by serous fluid

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14
Q

Posterior Region

A

Where vessels & nerves enter & leave testes

Not covered by tunica vaginalis

Contains rete testis & efferent ductules

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15
Q

Blood supply of Testes

A

Testicular arteries- from abdominal aorta

Testicular veins- from pampiniform plexus

Spermatic cord encloses PNS & SNS n. fibers, blood vessels & LN!

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16
Q

Palpiniform Plexus

A

Via testicular v. drains to IVC on R

L renal vein on L

17
Q

Cancer of testes & scrotum

A

Cancer of testis- metastasize initially to retroperitoneal para aortic or lumbar LN

Then spread to mediastinal LN

supraclavicular LN

Cancer of scrotum- metastasize to superficial inguinal LN

18
Q

Undescended Cryptorchid Testes

A

30% in preemies

95% unilateral, usually inguinal canal

Increased risk for developing malignancy

19
Q

4 Types of Maldescent of Testis

A
  1. in superficial fascia of ant abd wall above superficial inguinal ring
  2. at root of penis
  3. in perineum
  4. in thigh
20
Q

Hydrocele

A

Presence of excess fluid in persistent processus vaginalis

Congenital= usually goes away within 1st eyar of life

or

injury/ inflamation of epididymis in adults or arise in spermatic cord

21
Q

Hematocele of Testes

A

Rupture of branches of testicular a. by trauma

Produce scrotal or testicular hematoma

Blood doesn’t transilluminate

22
Q

Noncommunicating Hydrocele

A

Processus vaginalis is obliterated & tunica vaginalis contains fluid

No fludi can move b/t abdomen & scrotum

23
Q

Communicating Hydrocele

A

Processus vaginalis still open, allows fluid to move b/t abdomen & tunica vaginalis in scortum .

Associated w/ indirect inguinal hernia

24
Q

Transillumination

A

Bright light is applied to side of scrotal enlargment in dark room

Transmission of light as red glow indicates excess serous fluid in scrotup

25
Q

Varicocele

A

Pampiniform plexus of veins becomes dilated & tortuous

Common on L side

feels like bundle of worms

Usually disappears when person lies down

Defective valves in testicular v. or obstruction of v.

May indicate kidney disease or may signal retroperitoneal malignancy obstructing v.

26
Q

Cremasteric Reflex

A

Stroking skin on medial aspect of sup thigh- rapid elevation of testis on same side

Contraction of cremasteric m.

Afferent limb= ilioinguinal n.

efferent limb= genital br. of genitofemoral n.

Active in children= undescended testes when hyperreflexia

27
Q

Vasectomy

A

B/L

Infertility in men

Cut Vas Deferens

28
Q

Canal of Nuck

A

Patent processus vaginalis in females - cysts & hernias may form

Indirect inguinal hernia= pareital peritoneum along round ligament runs through inguinal rings

Into Labium majorum

Anatomy (10 decks)

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