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Male anatomy Flashcards

1
Q

What forms the erectile tissue of the penis?

A

Corpus cavernosum

Corpus spongiosum

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2
Q

What is the corpus cavernosum?

A

erectile tissue forming the main body of the penis

Continuation of the crura

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3
Q

What is the corpus spongiosum?

A

Erectile tissue formed from the bus of penis and running up the middle of the bottom

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4
Q

What are the muscles of the penis?

A

2 bulbospongiosum muscles

2 ischiocavernosus muscles

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5
Q

What is the function of the bulbospongiosus muscles?

A

Contract to empty urethra

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6
Q

What is the function of the ischiocavernosus muscles?

A

Help maintain erection

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7
Q

Where are the bulbospongiosus muscles?

A

Around base

Associated with bulb of penis

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8
Q

What is the arterial supply of the penis?

A

Internal pudendal artery

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9
Q

What is the venous drainage of the penis?

A

Deep and superficial dorsal veins

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10
Q

What is the nerve supply of the penis?

A

Branch of pudendal

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11
Q

What is the lymphatic drainage of the penis?

A

External iliac

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12
Q

What is the histological appearance of the penis?

A

2 ovals of loosely packed corpus cavernosa and a more densely packed corpus spongiosum containing the urethra
Surrounded by several layers of epithelial cells

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13
Q

What are the layers of the testes?

A

Outer fibrous tunica vaginalis
Tunica albuginea
Tunica vasculosa

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14
Q

What is the tunica vaginalis?

A

Outermost fibrous layers of the testes with 2 layers

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15
Q

What are the layers and cavity of the tunica vaginalis?

A

Visceral and parietal

Cavum vaginale

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16
Q

What is the tunica albuginea?

A

Thick white fibrous tissue capsule

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17
Q

What does the tunica albuginea do?

A

Forms the septa that divide the testes into 200-300 lobules, each containing 1-4 seminiferous tubules

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18
Q

What is the tunica vasculosa?

A

Highly vascularised connective tissue

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19
Q

What are the seminiferous tubules?

A

Long, convoluted sperm producing tubules

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20
Q

What surrounds the seminiferous tubules?

A

Connective tissue myoid cells

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21
Q

What are myoid cells?

A

Contractile cells that help spermatozoa move through the tubules

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22
Q

What is the function of sertoli cells?

A

Mechanical support
Provide nutrition to spermatogenic cells
Form blood testes barrier
Secrete androgen binding protein

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23
Q

What are Leydig cells?

A

Interstitial cells

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24
Q

What is the function of Leydig cells?

A

Produce testosterone

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25
What is the histology of the seminiferous tubules?
High convoluted- multiple cross sections in 1 slide 4-8 layers of cells Leydig cells in interstitial spaces "empty" area in centre
26
What is the blood testes barrier?
Physical barrier between blood vessels and seminiferous tubules formed by Sertoli cells
27
What is the epididymis?
Smooth muscle tubule connecting testicle to vas deferens
28
What is the structure of the epididymis?
Head of thick epithelium and little smooth muscle | Body of intermediate epithelium and smooth muscle
29
What is the function of the head of the epididymis?
Receive spermatozoa | Absorb fluid to make soerm more concentrated
30
What is the histological appearance of the epididymis?
Several sections seen in 1 slide Pseudostratified epithelium Long microvilli Large lumen
31
What are the layers of the inguinal canal?
External spermatic fascia Cremaster muscle Internal soermatic fascia
32
What are the contents of the inguinal cord?
Spermatic cord | Ilioinguinal nerve
33
What is in the spermatic cord?
Vas deferens Testicular artery Pampniform plexus
34
What is the blood supply of the testes?
Testicular arteries- branch of abode aorta at T12
35
What does the testicular artery cross over?
Ureter | External iliac artery
36
What is the venous drainage of the testicles?
Pampniform plexus | Testicular veins
37
What do the testicular veins drain to?
Right to IVC | Left to left renal vein
38
What is the lymphatic drainage of the testes?
Para-aortic | Inguinal
39
What is the vas deferens?
Muscular tube arising from tail of epididymis
40
Where does the vas deferens terminate?
Joining the duct of the seminal gland to form the ejaculatory duct
41
What s the histology of the vas deferens?
Thickly walled tube 3 layers of smooth muscle Star shaped lumen
42
What are the 3 muscular layers of the vas deferens?
Inner and outer smooth muscle | Middle layer of circular muscle
43
Where are the seminal vesicles?
Posterioinferior to urinary bladder and superior to prostate
44
What is the function of the seminal vesicles?
Secrete majority of seminal fluid
45
What is the structure of the seminal vesicles?
Convoluted 5cm long tubes | Cauliflower appearance
46
What is the histological structure of the seminal vesicles?
Highly recessed and irregular lumen | Honeycomb appearance
47
What are the 3 zones of the prostate?
Central zone Transitional zone Peripheral zone
48
Where is the prostate located?
Inferior to neck of bladder in midline
49
What is the function of the prostate?
Produce seminal fluid containing proteolytic enzymes to ensure semen stays in fluid state
50
What is the arterial supply of the prostate?
Prostatic arteries
51
What is the venous drainage of the prostate?
Prostatic venous plexus
52
Where do the prostatic veins drain to?
internal iliac
53
What is the nerve supply of the prostate?
Inferior hypogastric plexus
54
What is the histological appearance of the prostate?
Serous alveoli with infolding epithelium | Trabeculae of muscular stroma
55
What is the blood supply of the scrotum?
anterior and posterior scrotal arteries
56
What is the anterior scrotal artery a branch of?
Deep external pudendal artery
57
What s the posterior scrotal artery a branch of?
Internal pudendal artery
58
Wha is the venous drainage of the testes and epididymis?
Pampniform plexus and testicualr veins
59
What is the venous drainage of the bladder, penis and prostate?
Prostatic, pudendal and vesicle venous plexuses
60
Where do the prostatic, pudendal and vesicle venous plexuses drain to?
Internal iliac
61
What is lymphatically drained to the superficial inguinal?
Scrotum Penis Peineum
62
What is lymphatically drained to the deep inguinal nodes?
Glands penis | Distal spongey urethra
63
What is lymphatically drained to the internal iliac nodes?
``` Corpus cavernosum Prostate Seminal vesicles Vas deferens Proximal spongey and membranous urethra ```
64
What is the lymphatic drainage of the testes?
Para-aortic nodes

Reproduction (29 decks)

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