Inguinal Canal and Male External Genitalia

Question 1

How long is iguinal canal?

Answer 1

5cm

Question 2

What is opening and exit of inguinal canal?

Answer 2

Deep inguinal ring- opening
Superficial inguinal ring- exit

Question 3

Answer 3

Question 4

Borders inguinal canal?

Answer 4

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

Question 5

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

Answer 5

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

Question 6

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

Answer 6

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)

Question 7

What carries sperm out of testes?

Answer 7

Vas deferens

Question 8

Answer 8

Question 8

Answer 8

Question 9

State 3 things in scrotum?

Answer 9

Testes
Epididymis
Spermatic cord

Question 10

Answer 10

Question 11

Give 2 functions of testes?

Answer 11

1) Produce sperm
2) Secrete sex hormone- testosterone

Question 12

What fascia cover testes and spermatic cord?

Answer 12

External spermatic fascia
Cremaster
Internal spermatic fascia

Question 13

Where are spermatozoa stored and formed?

Answer 13

Formed- testis
Stores- epididymis

Question 14

What carries sperm from epididymis?

Answer 14

Vas deferens

Question 15

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

Answer 15

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

Question 16

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

Answer 16

2 corpora cavernosa- top
1 corpus spongiosum- bottom

Enclosed Bucks fascia

Question 17

What is end penis called?

Answer 17

Glans
Expansion corpus spongiosum

Question 18

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

Answer 18

Scrotum
Left lower
Spermatic cord

Question 19

Answer 19

Question 20

What cells responsible testosterone production?

Answer 20

Leydig cells

Question 21

What aids maturation spermatozoa?

Answer 21

Sertoli cells

Question 22

Where are sertoli cells found?

Answer 22

Seminiferous tubules

Question 23

Where are spermatoza produced?

Answer 23

Seminiferous tubules

Question 24

Route of spermatozoa?

Answer 24

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

Question 25

What are testes covered by?

Answer 25

Tunica vaginalis

Question 26

What protects tissue of testes?

Answer 26

Tunical albuginea

Question 27

What are 3 parts epididymis?

Answer 27

Head Body Tail- origin vas deferens

Question 28

Function vas deferens?

Answer 28

Transport sperm to urethra for ejaculation

Question 29

Innervation of testes and epididymis?

Answer 29

Testicular plexus

Question 30

Answer 30

Question 31

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

Answer 31

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

Question 32

State venous drainage testes?

Answer 32

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

Question 33

Where are testes originally located during embryonic development?

Answer 33

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

Question 34

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

Answer 34

Abdominal aorta

Question 35

What is scrotum developed from (embryology)?

Answer 35

Paired genital swellings

Question 36

What are 3 paired contents of scrotum?

Answer 36

Testis- site sperm production Epididymis- store sperm Spermatic cord

Question 37

What is glans penis an expansion of?

Answer 37

Corpus spongiosum

Question 38

What carries urine and semen?

Answer 38

Penile urethra

Question 39

Where is the penile urethra loacted?

Answer 39

Corpus spongiosum

Question 40

What is arterial supply to penis?

Answer 40

Penile arteries Branch internal pudenal arteries Branch internal iliac arteries

Question 41

What is nerve supply to penis?

Answer 41

S2-S4 Pudenal nerve

Question 42

Is para or sympa erection?

Answer 42

Para Dilation

Question 43

What structure responsible for erection? How?

Answer 43

Corpus cavernosum Blood flow increase- more blood

Question 44

Role corpus spongiosum in erection?

Answer 44

Prevent urethra being compressed- ensure ejaculation occur

Question 45

Inability achieve/maintain erection?

Answer 45

Erectile dysfunction

Question 46

Answer 46

Question 47

What structure vital in micturition?

Answer 47

Urethra

Question 48

What is glans penis made of?

Answer 48

Corpus spongiosum

Question 49

Innervation of penis?

Answer 49

S2-S4 Pudenal nerve

Question 50

What is arterial supply penis?

Answer 50

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

Question 51

Answer 51

Question 52

Answer 52

Question 53

Answer 53

Question 54

Answer 54