spermatic cord/scrotum/testis

Question 1

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

Answer 1

external spermatic
cremasteric
internal spermatic

Question 2

what is the external spermatic fascia derived from?

Answer 2

external oblique aponeurosis

Question 3

what is the cremasteric fascia derived from?

Answer 3

internal oblique aponeurosis

Question 4

what is the internal spermatic fascia derived from?

Answer 4

transversalis fascia

Question 5

what is the nerve supply to the cremaster muscle?

Answer 5

genital branch of the genitofemoral nerve L1 L2

Question 6

what is the function of the cremaster muscle?

Answer 6

retract testis

temp regulation of sperm

Question 7

what are the 9 structures found in the spermatic cord?

Answer 7

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

Question 8

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

Answer 8

testicular vein

Question 9

where does the left testicular vein drain?

Answer 9

into the left renal vein

Question 10

where does the right testicular vein drain?

Answer 10

into the inferior vena cava

Question 11

where does the ilioinguinal nerve run?

Answer 11

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

Question 12

what are the 2 branches of the ilioinguinal nerve?

Answer 12

femoral- upper medial thigh

anterior scrotal or anterior labial- genitalia

Question 13

where does the ductus deferens transport sperm?

Answer 13

from epididymis to ejaculatory duct

Question 14

what is the scrotum?

Answer 14

an out pouching of the anterior abdominal wall

Question 15

what does the scrotum contain?

Answer 15

testes
epididymis
lower part of spermatic cord

Question 16

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

Answer 16

dartos muscle

Question 17

what is the darts muscle important for?

Answer 17

temperature regulation

Question 18

what are the 2 layers of the tunica vaginalis?

Answer 18

parietal layer
visceral layer

also has a cavity between

Question 19

what are the 2 functions of the testes?

Answer 19

production of spermatozoa

secretion of androgens

Question 20

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?

Answer 20

tunica albuginea

Question 21

what are the 2 deepest internal structures of the testes?

Answer 21

septa and lobule

Question 22

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

Answer 22

septa; lobule

Question 23

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

Answer 23

mediastinum testis

Question 24

what is the functional sperm producing portion of the testis?

Answer 24

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

Question 25

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

Answer 25

rete testis

Question 26

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

Answer 26

efferent ductules

Question 27

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

Answer 27

epididymis

Question 28

what is the function of the epididymis?

Answer 28

store sperm until they mature

Question 29

what are the 3 parts of the epididymis?

Answer 29

head body tail

Question 30

what is the lymphatic drainage of the testis?

Answer 30

they drain into the lumbar nodes

Question 31

what is the lymphatic drainage of the scrotum?

Answer 31

it drains into the superficial inguinal nodes

Question 32

where do the testes descend?

Answer 32

through the inguinal canal into scrotum just before birth

Question 33

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

Answer 33

gubernaculum testis

Question 34

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

Answer 34

cryptorchidism- most descend in first weeks or months. | usually found in inguinal canal and unilateral

Question 35

what are the percentages of cryptorchidism?

Answer 35

3% full term infants | 30% premature infants

Question 36

if testicles never descend with cryptorchidism what happens?

Answer 36

infertility results but androgen secretion still works