Podcast
Questions and Answers
What is the primary muscular component of the bladder that is under parasympathetic control?
What is the primary muscular component of the bladder that is under parasympathetic control?
- External urethral sphincter
- Internal urethral sphincter
- Levator ani muscle
- Detrusor muscle (correct)
Which male structure is related to the bladder neck?
Which male structure is related to the bladder neck?
- Urethra
- Prostate (correct)
- Rectum
- Vas deferens
Which lymphatic nodes drain the inferior part of the bladder?
Which lymphatic nodes drain the inferior part of the bladder?
- Cisterna chyli
- Suprarenal nodes
- Internal iliac nodes (correct)
- External iliac nodes
Which statement about the ureteric orifices is correct?
Which statement about the ureteric orifices is correct?
What anatomical feature does the ductus deferens acquire during its descent from the testis?
What anatomical feature does the ductus deferens acquire during its descent from the testis?
What condition is caused by the tearing of the pubocervical fascia during childbirth?
What condition is caused by the tearing of the pubocervical fascia during childbirth?
Which zone of the prostate is most commonly associated with prostatic cancer?
Which zone of the prostate is most commonly associated with prostatic cancer?
Which part of the male urethra is associated with the internal urethral sphincter?
Which part of the male urethra is associated with the internal urethral sphincter?
Which structure is located posterior to the bladder and participates in forming the ejaculatory duct?
Which structure is located posterior to the bladder and participates in forming the ejaculatory duct?
What type of nerves primarily provide vasomotor control to the testicular arteries?
What type of nerves primarily provide vasomotor control to the testicular arteries?
What is the function of the internal urethral sphincter?
What is the function of the internal urethral sphincter?
What anatomical relationship does the female bladder have with the uterus?
What anatomical relationship does the female bladder have with the uterus?
Where does the prostatic urethra begin within the prostate?
Where does the prostatic urethra begin within the prostate?
Which anatomical part directly receives sperm from the efferent ductules?
Which anatomical part directly receives sperm from the efferent ductules?
Which blood vessels primarily supply the female bladder?
Which blood vessels primarily supply the female bladder?
The structure known as the prostatic utricle is homologous to which female structure?
The structure known as the prostatic utricle is homologous to which female structure?
Which structure is located posteriorly to the male bladder?
Which structure is located posteriorly to the male bladder?
Which type of afferent fibers transmit pain sensations from the testes back to the spinal cord?
Which type of afferent fibers transmit pain sensations from the testes back to the spinal cord?
What characterizes the blood supply to the ductus deferens?
What characterizes the blood supply to the ductus deferens?
How does the ductus deferens travel in relation to the ureter?
How does the ductus deferens travel in relation to the ureter?
What is the primary purpose of the tunica albuginea in the testis?
What is the primary purpose of the tunica albuginea in the testis?
Which structure is responsible for the storage and maturation of sperm?
Which structure is responsible for the storage and maturation of sperm?
What is the role of the pampiniform plexus in the male reproductive system?
What is the role of the pampiniform plexus in the male reproductive system?
Which part of the male reproductive anatomy is referred to as the dead end recess of the tunica vaginalis?
Which part of the male reproductive anatomy is referred to as the dead end recess of the tunica vaginalis?
Which blood vessel presents the main arterial supply to the testis?
Which blood vessel presents the main arterial supply to the testis?
The mediastinum testis serves which primary function?
The mediastinum testis serves which primary function?
Which layer of the tunica vaginalis directly covers the testis?
Which layer of the tunica vaginalis directly covers the testis?
What anatomical feature is formed by the inward projections of the tunica albuginea?
What anatomical feature is formed by the inward projections of the tunica albuginea?
Which duct is involved in the transport of sperm from the epididymis?
Which duct is involved in the transport of sperm from the epididymis?
What is the location of the rectovesical pouch in relation to other reproductive structures?
What is the location of the rectovesical pouch in relation to other reproductive structures?
Flashcards
Tunica albuginea
Tunica albuginea
White, smooth fibrous capsule surrounding seminiferous tubules and mediastinum testis.
Tunica vaginalis
Tunica vaginalis
Embryonic remnant of peritoneum that descended with the testis, forming a closed sac covering the testis.
Parietal layer
Parietal layer
External layer of tunica vaginalis, separated from the visceral layer by fluid.
Visceral layer
Visceral layer
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Sinus epididymis
Sinus epididymis
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Mediastinum testis
Mediastinum testis
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Septa
Septa
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Seminiferous tubules
Seminiferous tubules
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Rete testis
Rete testis
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Efferent ductules
Efferent ductules
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What is a varicocele?
What is a varicocele?
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What are the lymphatics of the testes?
What are the lymphatics of the testes?
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What innervates the testes?
What innervates the testes?
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What are sympathetic efferents?
What are sympathetic efferents?
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What are visceral afferents?
What are visceral afferents?
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What is the epididymis?
What is the epididymis?
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What is the head of the epididymis?
What is the head of the epididymis?
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What is the body of the epididymis?
What is the body of the epididymis?
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What is the tail of the epididymis?
What is the tail of the epididymis?
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What is the ductus deferens?
What is the ductus deferens?
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Trigone
Trigone
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Detrusor Muscle
Detrusor Muscle
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Internal Urethral Sphincter
Internal Urethral Sphincter
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Ureteric Orifice
Ureteric Orifice
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Retropubic Space
Retropubic Space
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Cystocele
Cystocele
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Fundus
Fundus
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Neck
Neck
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Smooth Muscle of the Bladder
Smooth Muscle of the Bladder
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Micturition
Micturition
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Study Notes
Male Reproductive System Gross Anatomy
- Overview: The male reproductive system includes glands (testis, seminal vesicle, prostate, bulbourethral gland), gonads (testis), ducts (efferent ductules, epididymis, vas deferens, urethra), and penis.
- Peritoneal Coverings: Continuous with abdominal peritoneum, covering parts of the bladder and seminal vesicles, extending posteriorly to the rectum, forming the rectovesical pouch.
Testicles
- Tunica albuginea: A white, fibrous capsule surrounding seminiferous tubules and mediastinum testis.
- Tunica vaginalis: Embryonic remnant of peritoneum, covering most of the testis' posterior and lateral aspects. Composed of two layers, parietal (external) and visceral (internal) that create a sinus epididymis.
- Mediastinum testis: Area not covered by tunica vaginalis; site of entry for vasculature, nerves, lymphatics; and efferent ductules exit here.
- Septa: Inward projections of tunica albuginea dividing the testis into lobules (200-300 lobules).
- Seminiferous tubules: Located within the lobules, sites of sperm development; they converge to become straight tubules.
- Rete testis: Convergence of straight tubules, located at the mediastinum testis.
- Efferent ductules: Leave rete testis and enter the epididymis
- Blood supply: Testicular artery from aorta; cremasteric artery from inferior epigastric; deferential artery from superior/inferior vesical arteries.
- Venous drainage: Pampiniform plexus around testis → testicular veins.
- Varicocele: Enlarged pampiniform plexus vessels; a common cause of male infertility.
- Lymphatics: Travel with testicular vessels, draining to lumbar/aortic nodes.
- Innervation: Derived from aortic and renal plexuses; sympathetic efferents cause engorgement during arousal; visceral afferents for pain.
Epididymis
- Head: Receives efferent ductules, located over the superior pole of the testis.
- Body: Houses convoluted ducts along the posterior border of the testis.
- Tail: Continuous with ductus deferens, located at the inferior pole of the testis.
Vas Deferens
- Structure: Thick smooth muscle walls; small lumen; acquires spermatic cord coverings during descent. Expands to form ampulla posterior to the bladder, joining seminal vesicle to form ejaculatory duct.
Ductus (Vas) Deferens
- Course: Travels superiorly, behind the bladder, and crosses over the ureter before entering the deep inguinal ring.
- Seminal Vesicle & Ejaculatory Duct:
- Seminal vesicle: Tightly coiled tube resembling the ampulla of ductus, lateral to the ampulla; separated from rectum by rectovesical pouch & septum.
Prostate
- Base: Superior portion in contact with the bladder.
- Apex: Inferior portion in contact with the UGD.
- Posterior surface: Related to seminal vesicle, ductus deferens ampulla and rectum.
- Anterior surface: Related to pubis and puboprostatic ligaments.
- Zones: Anterior (non-glandular), Transitional (prone to benign prostatic hypertrophy), Peripheral (high incidence of prostatic cancer), Central (surrounds ejaculatory ducts).
Ejaculatory Duct
- Formation: Convergence of duct of seminal vesicle and ductus; enters the posterior surface of the prostate and opens into the posterior wall of the prostatic urethra.
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Description
This quiz covers the gross anatomy of the male reproductive system, including the various glands, ducts, and structural features such as the tunica albuginea and tunica vaginalis. It aims to test your understanding of the anatomy and function of the testicles and associated structures. Prepare to delve into the intricacies of male reproductive anatomy.
