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Questions and Answers
What is the main function of the accessory sex glands in male animals?
What is the main function of the accessory sex glands in male animals?
- To store sperm
- To produce testosterone
- To act as a transport medium for sperm (correct)
- To regulate body temperature
Which animal has a fibroelastic penis with no glans penis?
Which animal has a fibroelastic penis with no glans penis?
- Bull
- Boar (correct)
- Ram
- Stallion
What is the distinctive feature of the glans penis in a bull?
What is the distinctive feature of the glans penis in a bull?
- Mushroom-shaped
- Dorsoventrally flattened
- Twisted (correct)
- Spirally twisted
Which male animal has a sigmoid flexure that straightens during erection?
Which male animal has a sigmoid flexure that straightens during erection?
What does the retractor penis muscle do in male animals?
What does the retractor penis muscle do in male animals?
Which male animal possesses a 'broken penis' with a tuberculum spongiosum?
Which male animal possesses a 'broken penis' with a tuberculum spongiosum?
What is the innervation responsible for the male reproductive system's sympathetic function?
What is the innervation responsible for the male reproductive system's sympathetic function?
In which animal is the urethral process described as 'a long worm-like structure'?
In which animal is the urethral process described as 'a long worm-like structure'?
What is the function of venous engorgement in the context of erection in the musculocavernous penis?
What is the function of venous engorgement in the context of erection in the musculocavernous penis?
What muscle group is responsible for compressing venous return in the musculocavernous penis during erection?
What muscle group is responsible for compressing venous return in the musculocavernous penis during erection?
What is the anatomical term for the inability to retract the penis within the prepuce?
What is the anatomical term for the inability to retract the penis within the prepuce?
In which animal does the distal part of the corpora cavernosa become the os penis?
In which animal does the distal part of the corpora cavernosa become the os penis?
What is the function of the retractor penis muscle when the penis is flaccid?
What is the function of the retractor penis muscle when the penis is flaccid?
Which accessory sex gland is involved in the copulatory lock in dogs?
Which accessory sex gland is involved in the copulatory lock in dogs?
In a closed castration technique in the horse, what is incised after the skin and dartos muscle?
In a closed castration technique in the horse, what is incised after the skin and dartos muscle?
Which male reproductive structure is involved in the copulatory lock in dogs?
Which male reproductive structure is involved in the copulatory lock in dogs?
What is the function of the corpus spongiosum in male animals?
What is the function of the corpus spongiosum in male animals?
Which part of the canine penis is mainly responsible for filling up with blood during erection?
Which part of the canine penis is mainly responsible for filling up with blood during erection?
In a vasectomy procedure in rams, what specific ligament is incised?
In a vasectomy procedure in rams, what specific ligament is incised?
Which erectile tissue surrounds the penile urethra in male animals?
Which erectile tissue surrounds the penile urethra in male animals?
What is the function of the Os Penis in male animals?
What is the function of the Os Penis in male animals?
Which structure is incised during an open castration technique in dogs that is not part of a closed castration technique?
Which structure is incised during an open castration technique in dogs that is not part of a closed castration technique?
What is the function of the epididymis in the male reproductive system?
What is the function of the epididymis in the male reproductive system?
Which structure in the male reproductive system is mainly responsible for testosterone production?
Which structure in the male reproductive system is mainly responsible for testosterone production?
What is the function of the spermatic cord in the male reproductive system?
What is the function of the spermatic cord in the male reproductive system?
Which structure surrounds the testicle and provides protection?
Which structure surrounds the testicle and provides protection?
What is the main function of the accessory sex glands in male animals?
What is the main function of the accessory sex glands in male animals?
In terms of penis anatomy, what is the function of the musculo cavernosus penis?
In terms of penis anatomy, what is the function of the musculo cavernosus penis?
How does the fibroelastic penis differ from the musculo cavernosus penis in male animals?
How does the fibroelastic penis differ from the musculo cavernosus penis in male animals?
What is the main function of the fascial layers surrounding the testicle?
What is the main function of the fascial layers surrounding the testicle?
What structure supplies the testes and epididymis with blood?
What structure supplies the testes and epididymis with blood?
Which structure surrounds the tortuous testicular artery acting as a counter current heat exchange?
Which structure surrounds the tortuous testicular artery acting as a counter current heat exchange?
What is the supportive peritoneal fold that includes Mesoductus deferens & Mesorchium?
What is the supportive peritoneal fold that includes Mesoductus deferens & Mesorchium?
Which structure carries sperm from the epididymis to join the urethra within the pelvic cavity?
Which structure carries sperm from the epididymis to join the urethra within the pelvic cavity?
What guides the descent of testicles through the inguinal canal into the scrotum?
What guides the descent of testicles through the inguinal canal into the scrotum?
Which ligament degenerates during the development of male gonadal ligaments?
Which ligament degenerates during the development of male gonadal ligaments?
Which structure is an extension of IAO fibers outside the vaginal tunic?
Which structure is an extension of IAO fibers outside the vaginal tunic?
What does the genitofemoral nerve supply?
What does the genitofemoral nerve supply?
Study Notes
Accessory Sex Glands
- The main function of accessory sex glands in male animals is to produce secretions that make up semen.
Penis Anatomy
- The fibroelastic penis has no glans penis, found in the cat.
- In bulls, the glans penis is covered with a fibrous capsule.
- The sigmoid flexure in the penis of dogs straightens during erection.
- The retractor penis muscle helps to retract the penis into the prepuce when flaccid.
Urethral Process
- The urethral process in the horse is a long worm-like structure.
Erection
- Venous engorgement is necessary for erection in the musculocavernous penis.
- The ischiocavernosus and bulbospongiosus muscles compress venous return during erection.
Anatomical Terms
- Phimosis is the inability to retract the penis within the prepuce.
Canine Penis
- The distal part of the corpora cavernosa becomes the os penis in the dog.
- The retractor penis muscle helps to retract the penis into the prepuce when flaccid.
Castration Techniques
- In a closed castration technique in the horse, the skin and dartos muscle are incised.
- In a vasectomy procedure in rams, the external lamina of the vaginal tunic is incised.
- In an open castration technique in dogs, the parietal tunic is incised.
Reproductive System
- The corpus spongiosum is involved in the copulatory lock in dogs.
- The corpus spongiosum surrounds the penile urethra in male animals.
- The epididymis is responsible for sperm maturation and storage.
- The testes are mainly responsible for testosterone production.
- The spermatic cord provides a pathway for the vas deferens, testicular artery, and vein.
- The tunica albuginea surrounds the testicle, providing protection.
Blood Supply
- The testicular artery supplies the testes and epididymis with blood.
- The pampiniform plexus surrounds the tortuous testicular artery, acting as a counter-current heat exchange.
Fetal Development
- The gubernaculum guides the descent of testicles through the inguinal canal into the scrotum.
- The cranial suspensory ligament degenerates during the development of male gonadal ligaments.
Nerve Supply
- The genitofemoral nerve supplies the cremaster muscle.
Miscellaneous
- The mesoductus deferens and mesorchium are supportive peritoneal folds.
- The vas deferens carries sperm from the epididymis to join the urethra within the pelvic cavity.
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Description
Learn about the anatomical features and physiological processes involved in the erection of the musculocavernous penis in dogs, horses, and humans. Explore the structures like Glans penis, Corpora cavernosa, and the role of smooth muscles and nerves in erectile function.
