Page 1321 - TNFlipTest

Toronto Notes 2019
Basic Anatomy Review
Urology U3
Transverse Sections of Penis
Skin Loose areolar tissue Deep fascia Tunica albuginea
Superficial
dorsal vein
Deep dorsal vein
Dorsal artery
Superficial dorsal vein Deep dorsal vein Dorsal artery
Dorsal nerve
Corpus cavernosum Deep artery
Urethra
Corpus spongiosum
Skin
Glans penis Dorsal vein Dorsal artery Dorsal nerve
Corpus cavernosum Corpus spongiosum Urethra
Shaft
Figure 4. Cross section of the penis
Ductus deferens
Pubic symphsis
Prostate Urethra
Ductus deferens
Testis
Figure 5. Median sagittal section of the male pelvis and perineum Sympathetic (T10-L2) ON
β3
M
ACh
Pelvic nerve
Sympathetic (T10-L2)
• Hypogastric nerve
• NEadrenergic receptors
• α1 receptorinternal urethral sphincter contraction
• β3 receptordetrusor relaxation
Somatic (S2-S4)
• Pudendal nerve
• AChnicotinic receptorsexternal
urethral sphincter contraction
Parasympathetic (S2-S4) Off
Distal (foreskin retracted)
Seminal vesicle
Ampulla of ductus deferens
Rectum Bulbourethral gland
Parasympathetic (S2-S4) OFF
© Tobi Lam
NE
Hypogastric nerve
Somatic (S2-S4) ON
Pudendal nerve
NE
ACh
α1
N
Internal urethral sphincter
External urethral sphincter
© Sarah Crawley 2019
Figure 6. Bladder innervation during storage phase
© Jerusha Ellis