lec 5 Flashcards
the obturator internus leaves the pelvic cavity through ———–
lesser sciatic foramen
nerve supply of obturator internus
L5 +S1
action of obturator internus
lateral rotator of the thigh at hip joint
action of piriformis
lateral rotator of the thigh at hip joint
nerve supply of piriformis
L5-S1 and 2
the piriformis goes transversely through
greater sciatic notch
which muscle forms the levator prostate (pubourethralis)
The most anterior fibers of the levator ani that arise from the body of pubis
the anterior fibers that arise from the body of pubis of levator ani form
male it is around ———– and forms —>
female it is around ———- and forms —>
the prostate —> levator prostate (pubourethralis)
posterior wall of the vagina –> pubovaginalis
the posterior fibers that arise from the body of pubis form
puborectalis muscle
puborectalis muscles holds the anorectal junction angled ——-
forward
anococcygeal raphe is btw ————,———–
anal canal and the tip of the coccyx
the levator ani is supplied by
mainly S4 ——> perineal branch
inferior rectal branch of the pudendal
coccygeus muscle is overlapped anteriorly by
iliococcygeus
the gluteal surface of coccygeus forms
sacrospinous ligament
coccygeus is supplied by
S4 and 5 spinal nerves
puborectalis part of levator ani action —–>
pubovaginalis action —–>
sphincter action on anorectal junction
sphincter action on the vagina
The pelvic diaphragm ———— during coughing and sneezing , and ——– in micturition, defaecation and partitution
contracts
relaxes
coccygeus action during defecation
pulls the coccyx forwards after it has been pushed backwards during defaecation
which is longer the right or left spermatic cord
left
Constituent of Spermatic Cord
(1) Testicular artery: Branch of abdominal aorta.
(2) Testicular lymph vessels:
(3) Testicular vein (pampiniform plexus):
(4) Testicular sympathetic plexus:
(5) Vas deferens.
(6) Artery to vas deferens: Branch of superior or inferior vesicle artery.
(7) Cremasteric artery: Branch of inferior epigastric artery.
(8) Genital branch of genitofemoral nerve L1 and 2:
(9) Fibrous remains of processus vaginalis
at which level the Testicular vein (pampiniform plexus) forms a single vein
deep inguinal ring level
the testicular vein on the left side drains into —-
right side —–
left renal vein, on left side and into inferior vena cava, on right side
which nerve supplies the cremasteric muscle
Genital branch of genitofemoral nerve L1 and 2
Testicular sympathetic plexus id derived from ——– and follows ———–
These fibers are derived from the renal or aortic plexus of nerves.
They follow the testicular artery
name the 3 Covering of Spermatic Cord (Spermatic
Fascia) and from what they acquired
(1) Internal spermatic fascia: Acquired from fascia transversalis at deep inguinal ring.
(2) Cremasteric fascia: Acquired from internal oblique muscle within inguinal canal.
(3) External spermatic fascia: Acquired from aponeurosis of external oblique muscle at superficial inguinal ring.
scrotum is —>
urogenital diaphragm is —>
perineal body is —->
a cutaneous fibromuscular sac
a triangular musculofascial diaphragm
a fibromuscular mass
the scrotum contains —————
testis, epididymis, and lower part of spermatic cord
tunica vaginalis covers the testis from
anterior, medial, and lateral surfaces of testis
Visceral layer of tunica vaginalis is closely applied to
testis, epididymis, and inferior part of vas deferens
The small amount of fluid in cavity of tunica vaginalis allows the testes to
move freely in scrotum
The testis is surrounded by a tough fibrous capsule called the———–, which is thickened on the ———– surface of the testis to form the ———– of the testis
tunica albuginea
posterior
mediastinum
what divides the testis into lobules
the incomplete septa arising from the mediastinum
Each lobe of testis is occupied by
1 – 3 seminiferous tubules
name this structure’s job
Straight tubule
Connect seminiferous tubules with rete testis
name this structure’s job Efferent Ducts
carry sperm from rete testis to head of epididymis
how many efferent ducts extend from rete testis
15-20
It is a firm coma-shaped structure, closely applied to posterior margin of testis
Ductus Epididymis
what lies on the medial side of Ductus Epididymis
vas deferens
The major function of epididymis
is storage and maturation of spermatozoa
in epididymis spermatozoa develop
motility
sinus of epididymis lies between
testis and epididymis
Ductus (Vas) Deferens job is
conveys mature sperm from epididymis to ejaculatory duct
the vas deferens it bends at an acute angle and runs downwards, medially, and slightly forwards at which level and comes to lie between what ?
ischial spine
between posterior surface of bladder and rectum
relation of vas deferens to seminal vesicle
it lies medially to it
what forms the ejaculatory duct
union of inferior end of vas deferens ampulla with the duct of the seminal vesicle
the ejaculatory duct pierces what ? and opens into what?
posterior surface of prostate
open into upper part of prostatic urethra
