Podcast
Questions and Answers
What tissue structure is involved in the erection of the penis?
What tissue structure is involved in the erection of the penis?
- Epithelial tissue
- Erectile tissue (correct)
- Nervous tissue
- Muscle tissue
Which part of the penis is specifically covered by the foreskin?
Which part of the penis is specifically covered by the foreskin?
- Glans penis (correct)
- Urethra
- Shaft
- Corpora cavernosa
What do the secretions of the male accessory glands primarily contribute to?
What do the secretions of the male accessory glands primarily contribute to?
- Stimulation of testosterone production
- Composition of seminal plasma (correct)
- Enhancement of libido
- Formation of sperm
Which component is NOT typically found in the seminal plasma?
Which component is NOT typically found in the seminal plasma?
What role do the bulbourethral glands play in male reproduction?
What role do the bulbourethral glands play in male reproduction?
What is the purpose of the scrotum in the male reproductive system?
What is the purpose of the scrotum in the male reproductive system?
Which cells in the seminiferous tubules provide nutrition to the germ cells?
Which cells in the seminiferous tubules provide nutrition to the germ cells?
What is the sequence of the male reproductive ducts from the testes to the outside of the body?
What is the sequence of the male reproductive ducts from the testes to the outside of the body?
During which process do male germ cells undergo divisions leading to sperm formation?
During which process do male germ cells undergo divisions leading to sperm formation?
Where are Leydig cells located within the male reproductive system?
Where are Leydig cells located within the male reproductive system?
What role does the vas deferens play in the male reproductive system?
What role does the vas deferens play in the male reproductive system?
Which structure directly connects the seminiferous tubules to the epididymis?
Which structure directly connects the seminiferous tubules to the epididymis?
What is the average length of an adult testis?
What is the average length of an adult testis?
Flashcards
Male reproductive system location
Male reproductive system location
The male reproductive system is located in the pelvis.
Scrotum's role in spermatogenesis
Scrotum's role in spermatogenesis
The scrotum helps keep the testes' temperature lower than body temperature for sperm production.
Testicular lobules
Testicular lobules
Small compartments in the testes containing seminiferous tubules, where sperm is made.
Testis size (approximate)
Testis size (approximate)
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Seminiferous tubules
Seminiferous tubules
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Leydig cells' role
Leydig cells' role
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Epididymis function
Epididymis function
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Vas deferens' function
Vas deferens' function
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Male External Genitalia
Male External Genitalia
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Penis function
Penis function
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Accessory glands
Accessory glands
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Seminal plasma composition
Seminal plasma composition
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Bulbourethral gland function
Bulbourethral gland function
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Study Notes
Male Reproductive System
- Located in the pelvic region.
- Includes testes, accessory ducts, glands, and external genitalia.
- Testes are outside the abdominal cavity in the scrotum.
- Scrotum maintains low temperature (2-2.5°C lower than internal body temp) for spermatogenesis.
- Adult testes are oval, approximately 4-5 cm long and 2-3 cm wide.
- Each testis has 250 compartments called testicular lobules.
- Each lobule contains 1-3 coiled seminiferous tubules where sperm production occurs.
- Seminiferous tubules are lined with male germ cells (spermatogonia) and Sertoli cells.
- Spermatogonia undergo meiosis to form sperm.
- Sertoli cells nourish germ cells.
- Interstitial spaces contain blood vessels and Leydig cells (interstitial cells).
- Leydig cells produce androgens (testicular hormones).
Accessory Ducts
- Rete testis: Receives sperm from seminiferous tubules.
- Vasa efferentia: Connects rete testis to epididymis.
- Epididymis: Located along the posterior surface of the testes; stores and transports sperm
- Vas deferens: Ascends to the abdomen, loops over the bladder, receives a duct from seminal vesicle, and opens into the urethra as the ejaculatory duct.
- Urethra: Originates from the urinary bladder, passes through the penis, and ends at the urethral meatus.
External Genitalia
- Penis: Composed of erectile tissue for erection.
- Glans penis: Enlarged end of the penis, covered by a foreskin.
Accessory Glands
- Paired seminal vesicles.
- Prostate.
- Paired bulbourethral glands.
- Secretions combined form seminal plasma (rich in fructose, calcium, and certain enzymes).
- Bulbourethral glands secretions lubricate the penis.
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