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G14: Male Reproductive System
David A. Morton, Ph.D.ANAT 6010- Medical Gross Anatomy
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1) General: Male Anatomy
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1.Skin
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3. Scarpas2. Campers
3.
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4. Ext obliq
4. Ext sperm fascia
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5. Int obliq
5. Cremasteric muscle and fascia
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6. Tr abd
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7. Tr. fascia
7. Int sperm fascia
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8. Ex p fat
8. Areolar CT
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9. Par Perit
9.
3. Testis
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Spermatozoa production and pathway
3. Testis; 4. Spermatic Cord
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Spermatozoa production and pathway
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3. Testis
Vascularization of testis
4. Spermatic
Cord
Contents
I. Ductus def
II. Testic a. and v.
III. Cremaster m.
IV. Gen. br. (L1-L2)
V. Autonomics
VI. Lymphatics
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5. Ductus
deferens
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a) Pathway
b) Vascularization
(via prox aa. & vv.)
a) Symp innervation
6) Seminal Vesicles
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a) Location and Function
b) Relationships
7) Prostate
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a) Ejaculatory duct
b) Prostate lobes
c) Prostate function
d) Vascular supply
e) Autonomic innervation
f) Digital rectal exam
g) Prostatectomy/Impotence
7) Prostate
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a) Ejaculatory duct
b) Prostate lobes
c) Prostate function
d) Vascular supply
e) Autonomic
f) Digital rectal exam
g) ProstatectomyInferior vesical artery
7) Prostate
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a) Ejaculatory duct
b) Prostate lobes
c) Prostate function
d) Vascular supply
e) Autonomic innervation
f) Digital rectal exam
g) Prostatectomy/Impotence
7) Prostate
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a) Ejaculatory duct
b) Prostate lobes
c) Prostate function
d) Vascular supply
e) Autonomic innervation
f) Digital rectal exam
g) Prostatectomy/Impotence
GAFS 5.62.BPg. 50
8) Urethra and Bulbourethral Glands
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8) Urethra and Bulbourethral Glands
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8) Urethra and Bulbourethral Glands
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9) Penis - a) Structure
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Pg. 52 GAFS 5.71-4
9) Penis - a) Structure
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9) Penis - a) Structure
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(Superficial fascia)
9) Penis - b)Fascial Layers
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(Buck’s fascia)
9) Penis - b)Fascial Layers
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9) Penis - b)Fascial Layers
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9) Penis - c) Ligaments
9) Penis - d) Vascularization
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9) Penis - d) Arteries
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GAFS 5.77
9) Penis - d) Arteries
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GAFS 5.66
9) Penis - d) Veins
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Pg. 509) Penis - e) Innervation
e) Sympathetics of the penis originate from T10-L2spinal cord levels and enter the inferior hypogastricplexus from:
- Hypogastric nerves
- Sacral splanchnic nerves
Pg. 509) Penis - e) Innervation
f) Parasympathetics of the penis originate from S2-S4spinal cord levels and enter the inferior hypogastricplexus from:
- Pelvic splanchnic nerves
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9) Penis - e) Innervation
GAFS 5.62.BPg. 50
9) Penis - e) Innervation
Semen, Erection and Ejaculation
• Semen
• Sperm, seminal vesical, prostate, bulbourethral
gland
• Erection
• Parasympathetic control
• Ejaculation
• Sympathetic control
• Emission and Ejaculation
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Semen on glass
Erection - Parasympathetic
• Parasympathetic control (S2-S4)
• Dilatation of the deep arteries increases blood flow
into the cavernous spaces of the erectile tissue
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Erection - Parasympathetic
• Parasympathetic control (S2-S4)
• Dilatation of the deep arteries increases blood flow
into the cavernous spaces of the erectile tissue
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Emission - Sympathetic (L1-L2)
• Contraction of smooth muscle within ductus deferens
and seminal vesicles and prostate
• Contraction of internal urethral sphincter
• Emission - Release of sperm and gland secretions into
the urethra
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Ejaculation - Sympathetic (L1-L2• Sympathetic control (L1-L2)
• Closure of the urethral sphincter
• Contraction of smooth muscle in ductus deferens
• Somatic (pudendal) control (S2-S4)
• Contraction of the ischiocavernosus and bulbospongiosus muscles
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Detumescence
• Sympathetic control (L1-L2)
• Constriction of the smooth muscle of the
helicine arteries, arresting arterial blood flow to
the erectile tissue
• Venous blood leaves the erectile tissue via the
dorsal deep veins, which drain into the prostatic
venous plexus
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Netter 396
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Netter 390
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Netter 395
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