Inguinal Region and External Genitalia Flashcards
What forms the floor of the inguinal canal?
Inguinal Ligament
What does the inguinal canal transmit in each gender?
Male: Spermatic Cord
Female: Round ligament of the uterus
What are the nerve roots for the ilio-inguinal ring and what sensory?
L1
Skin on upper middle thigh
Skin over penis and scrotum
Skin over mons pubis and labium majora
How do the testes move from posterior abdominal wall to scrotum?
Descend w/ help of paired gubernacular
Guided through inguinal canal and into scrotum
Where is the inferior epigastric artery found?
Medial to deep inguinal ring
3 layers of tissue surrounding the SC?
1) External Spermatic Fascia
2) Cremaster muscle/fascia
3) Internal Spermatic Fascia
Where is each layer of Spermatic fascia derived from?
1) E: Aponeurosis of EO
2) C: IO
3) I: Transversalis Fascia
What is the role of the cremaster muscle?
Raise and lower testes to regulate scrotal temperature for spermatogenesis
Which 3 arteries and veins are in the Spermatic cord?
1) Testicular Artery/Vein
2) Artery/Vein of the Vas
3) Cremasteric artery/vein
What is the vas deferens?
Duct transporting sperm from epididymis to ejaculatory ducts
What 3 nerves are in the SC?
1) Ilio-inguinal
2) Genitofemoral
3) Sympathetic Plexus
What are the other 3 structures in the SC?
1) Vas Deferens
2) Lymphatics
3) Tunica Vaginalis
Role of the dartos muscle?
Regulate temperature by wrinkling skin of scrotum, V SA and V heat loss
Which 3 erectile tissues in root of penis?
1) 2x Crura (Corpus Cavernosum)
2) 1 x Bulb (Corpus Spongiosum in body)
What is the glans of the penis?
Distal part (end) from expansion of corpus spongiosum. (Has Urethral Orifice)
