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GU anatomy > Inguinal Canal and Male External Genitalia > Flashcards

Inguinal Canal and Male External Genitalia Flashcards

1
Q

How long is iguinal canal?

A

5cm

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2
Q

What is opening and exit of inguinal canal?

A

Deep inguinal ring- opening
Superficial inguinal ring- exit

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3
Q
A
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4
Q

Borders inguinal canal?

A

Anterior- external oblique aponeurosis
Posterior- transversalis fascia
Roof- transversalis fascia
Floor- inguinal ligament

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5
Q

Contents of inguinal canal females?
Contents of inguinal canal males?

A

Females- round ligament uterus
- ilioinguinal nerve
- genital branch of genitofemoral nerve
Males- spermatic cord
- ilioinguinal nerve

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6
Q

In spermatic cord what are:
Two nerves
Three arteries
Three fascial layers?

A

Two nerves:
* Genital branch of the genitofemoral nerve
* Sympathetic nerve fibres

Three arteries:
* Testicular artery
* Cremasteric artery
* Artery to the vas deferens

Three fascial layers:
* External spermatic fascia (derived from the external oblique aponeurosis)
* Cremaster muscle and fascia (derived from the internal oblique muscle)
* Internal spermatic fascia (derived from the transversalis fascia)

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7
Q

What carries sperm out of testes?

A

Vas deferens

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8
Q
A
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8
Q
A
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9
Q

State 3 things in scrotum?

A

Testes
Epididymis
Spermatic cord

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10
Q
A
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11
Q

Give 2 functions of testes?

A

1) Produce sperm
2) Secrete sex hormone- testosterone

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12
Q

What fascia cover testes and spermatic cord?

A

External spermatic fascia
Cremaster
Internal spermatic fascia

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13
Q

Where are spermatozoa stored and formed?

A

Formed- testis
Stores- epididymis

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14
Q

What carries sperm from epididymis?

A

Vas deferens

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15
Q

What is arterial supply to testes?
What is venous drainage?

A

Testicular arteries- branch abdominal aorta
Venous- pampiniform venous plexus- testicular vein:
Right- IVC
Left- renal vein

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16
Q

What are 3 erectile tissues of penis?
What are they enclosed in?

A

2 corpora cavernosa- top
1 corpus spongiosum- bottom

Enclosed Bucks fascia

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17
Q

What is end penis called?

A

Glans
Expansion corpus spongiosum

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18
Q

Where are testes located?
Which teste is lower?
What suspends testes?

A

Scrotum
Left lower
Spermatic cord

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19
Q
A
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20
Q

What cells responsible testosterone production?

A

Leydig cells

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21
Q

What aids maturation spermatozoa?

A

Sertoli cells

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22
Q

Where are sertoli cells found?

A

Seminiferous tubules

23
Q

Where are spermatoza produced?

A

Seminiferous tubules

24
Q

Route of spermatozoa?

A

Produced seminiferous tubules
Travel through tubules
Collect retes testes
Efferent tubules transport from rete testes to epididymis- storage and maturation

25
Q

What are testes covered by?

A

Tunica vaginalis

26
Q

What protects tissue of testes?

A

Tunical albuginea

27
Q

What are 3 parts epididymis?

A

Head
Body
Tail- origin vas deferens

28
Q

Function vas deferens?

A

Transport sperm to urethra for ejaculation

29
Q

Innervation of testes and epididymis?

A

Testicular plexus

30
Q
A
31
Q

What is main arterial supply to testes and epididymis?
Where does pass into scotum via?

A

Testicular (gonadal) arteries
Descend down abdominal aorta- pass into scrotum via inguinal canal

32
Q

State venous drainage testes?

A

Pampiniform plexus
L testicular vein- left renal
R testicular vein- IVC

33
Q

Where are testes originally located during embryonic development?

A

Posterior abdominal wall
Descend down abdomon
Through iguinal canal- reach scrotum

34
Q

The main arterial supply to the testes is via the paired testicular arteries. Where do they arise from?

A

Abdominal aorta

35
Q

What is scrotum developed from (embryology)?

A

Paired genital swellings

36
Q

What are 3 paired contents of scrotum?

A

Testis- site sperm production
Epididymis- store sperm
Spermatic cord

37
Q

What is glans penis an expansion of?

A

Corpus spongiosum

38
Q

What carries urine and semen?

A

Penile urethra

39
Q

Where is the penile urethra loacted?

A

Corpus spongiosum

40
Q

What is arterial supply to penis?

A

Penile arteries
Branch internal pudenal arteries
Branch internal iliac arteries

41
Q

What is nerve supply to penis?

A

S2-S4
Pudenal nerve

42
Q

Is para or sympa erection?

A

Para
Dilation

43
Q

What structure responsible for erection?
How?

A

Corpus cavernosum
Blood flow increase- more blood

44
Q

Role corpus spongiosum in erection?

A

Prevent urethra being compressed- ensure ejaculation occur

45
Q

Inability achieve/maintain erection?

A

Erectile dysfunction

46
Q
A
47
Q

What structure vital in micturition?

A

Urethra

48
Q

What is glans penis made of?

A

Corpus spongiosum

49
Q

Innervation of penis?

A

S2-S4
Pudenal nerve

50
Q

What is arterial supply penis?

A

Dorsal and deep artery penis + Bulbourethral artery
Internal pudenal artery
Internal iliac artery

51
Q
A
52
Q
A
53
Q
A
54
Q
A

GU anatomy (7 decks)

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