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gross anatomy II ex 3 > spermatic cord/scrotum/testis > Flashcards

spermatic cord/scrotum/testis Flashcards

1
Q

what are the 3 layers of fascia of the spermatic cord?

A

external spermatic
cremasteric
internal spermatic

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2
Q

what is the external spermatic fascia derived from?

A

external oblique aponeurosis

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3
Q

what is the cremasteric fascia derived from?

A

internal oblique aponeurosis

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4
Q

what is the internal spermatic fascia derived from?

A

transversalis fascia

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5
Q

what is the nerve supply to the cremaster muscle?

A

genital branch of the genitofemoral nerve L1 L2

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6
Q

what is the function of the cremaster muscle?

A

retract testis

temp regulation of sperm

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7
Q

what are the 9 structures found in the spermatic cord?

A 
1 ductus deferens 
2 testicular artery
3 pampiniform plexus of veins
4 artery to the ductus deferens
5 cremasteric artery
6 genital branch of the genitofemoral nerve
7 remnant processus vaginalis 
8 autonomic nerves 
9 lymphatics
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8
Q

the pampiniform plexus of veins joins together at the deep inguinal vein to form the?

A

testicular vein

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9
Q

where does the left testicular vein drain?

A

into the left renal vein

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10
Q

where does the right testicular vein drain?

A

into the inferior vena cava

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11
Q

where does the ilioinguinal nerve run?

A

through the inguinal canal and superficial inguinal ring. accompanies spermatic cord but isn’t a part of it

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12
Q

what are the 2 branches of the ilioinguinal nerve?

A

femoral- upper medial thigh

anterior scrotal or anterior labial- genitalia

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13
Q

where does the ductus deferens transport sperm?

A

from epididymis to ejaculatory duct

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14
Q

what is the scrotum?

A

an out pouching of the anterior abdominal wall

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15
Q

what does the scrotum contain?

A

testes
epididymis
lower part of spermatic cord

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16
Q

what are the smooth muscle fibers firmly adherent to the skin of the scrotum?

A

dartos muscle

17
Q

what is the darts muscle important for?

A

temperature regulation

18
Q

what are the 2 layers of the tunica vaginalis?

A

parietal layer
visceral layer

also has a cavity between

19
Q

what are the 2 functions of the testes?

A

production of spermatozoa

secretion of androgens

20
Q

what is the fibrous outer covering of the testes that lies deep to the visceral layer of the tunica vaginalis and is the deepest layer of the scrotum?

A

tunica albuginea

21
Q

what are the 2 deepest internal structures of the testes?

A

septa and lobule

22
Q

the testis is divided by _____ into numerous wedged shaped portions called _______

A

septa; lobule

23
Q

what is the fibrous compartment in the posterior part of the testis where the septa converge?

A

mediastinum testis

24
Q

what is the functional sperm producing portion of the testis?

A

seminiferous tubules- each lobule contains 2-3 of these which unite to form straight tubules

25
Q

what is an elaborate network of canals located within the mediastinum testis into which the straight tubules empty?

A

rete testis

26
Q

what are the ducts which connect the rete testis to the head of the epididymis?

A

efferent ductules

27
Q

what is the C shaped structure attached to the superior and posterior aspect of the testis?

A

epididymis

28
Q

what is the function of the epididymis?

A

store sperm until they mature

29
Q

what are the 3 parts of the epididymis?

A

head
body
tail

30
Q

what is the lymphatic drainage of the testis?

A

they drain into the lumbar nodes

31
Q

what is the lymphatic drainage of the scrotum?

A

it drains into the superficial inguinal nodes

32
Q

where do the testes descend?

A

through the inguinal canal into scrotum just before birth

33
Q

what is a ligament present in the fetus which connects the testis to the scrotum which contracts to pull the testis down?

A

gubernaculum testis

34
Q

what is the condition in which the testes are undescended at birth?

A

cryptorchidism- most descend in first weeks or months.

usually found in inguinal canal and unilateral

35
Q

what are the percentages of cryptorchidism?

A

3% full term infants

30% premature infants

36
Q

if testicles never descend with cryptorchidism what happens?

A

infertility results but androgen secretion still works

gross anatomy II ex 3 (7 decks)

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