Question 1

Which of the following species possesses a fibroelastic penis characterized by a sigmoid flexure and a twisted, spiral-shaped glans penis?

Accepted Answer

Bull

Answer

Dog

Answer

Cat

Answer

Stallion

Question 2

Which of the following anatomical features is unique to the feline (cat) penis and is dependent on androgen levels?

Accepted Answer

Cornified spines on the glans penis

Answer

The presence of a large Bulbus glandis

Answer

A cartilaginous Os penis extending the full length

Answer

A sigmoid flexure located pre-scrotally

Question 3

Which of the following statements correctly distinguishes the anatomy of the avian (fowl) phallus from that of domestic mammals like the stallion or bull?

Accepted Answer

The phallus is non-penile and lacks a corpus spongiosum with a functional internal urethra for sperm transport.

Answer

The fowl phallus contains a closed urinary tube that carries both urine and semen.

Answer

The fowl phallus is purely musculocavernous and relies on a sigmoid flexure for protrusion.

Answer

The fowl phallus contains a large os phallus similar to the canine os penis.

Question 4

In the canine (dog) penis, which anatomical structure is primarily responsible for the 'coital tie' (locking) by expanding significantly during the middle stage of copulation?

Accepted Answer

Bulbus glandis

Answer

Processus urethrae

Answer

Sigmoid flexure

Answer

Corpus spongiosum glandis

Question 5

The stallion's penis is classified as musculocavernous. Which anatomical feature is characteristic of the distal end of the stallion's penis, specifically involving the urethral opening?

Accepted Answer

A distinct fossa glandis containing a urethral sinus and a projection called the processus urethrae.

Answer

A spiral configuration of the glans that lacks a urethral process.

Answer

A series of androgen-dependent cornified papillae surrounding the urethral orifice.

Answer

A cartilaginous cap that contains a prominent os penis.

Question 6

Regarding the anatomy of the os penis (baculum), which of the following statements accurately describes the differences between the dog and the cat?

Accepted Answer

In the dog, the os penis is long and contains a ventral urethral groove, whereas in the cat, it is very small and located at the tip of the glans.

Answer

Both species possess an os penis that is identical in relative size and contains a dorsal groove for the dorsal nerve of the penis.

Answer

The dog lacks an os penis, relying entirely on the musculocavernous tissue of the bulbus glandis.

Answer

In the cat, the os penis extends the entire length of the shaft to facilitate the sigmoid flexure.

Question 7

Which of the following describes the correct orientation of the feline (cat) penis in a non-erect state and the direction of its urethral orifice?

Accepted Answer

The penis is directed caudoventrally, and the urethral orifice is located on the dorsal surface of the penis.

Answer

The penis is directed caudally, but the urethral orifice is located on the ventral surface as in the stallion.

Answer

The penis is directed cranially, and the urethral orifice is located on the ventral surface of the glans.

Answer

The penis is sequestered in a pre-scrotal S-shaped curve with a cranially directed orifice.

Question 8

Which of the following blood-vessel configurations is responsible for the rapid inflation and 'mushrooming' of the stallion's glans penis during erotic stimulation, categorizing it as a musculocavernous penis?

Accepted Answer

Large venous spaces and relatively low connective tissue content in the corpus cavernosum

Answer

The presence of a corkscrew-shaped os penis that facilitates rotational expansion

Answer

A network of lymphovascular channels that bypass the corpus spongiosum

Answer

A tight tunica albuginea that restricts expansion to the sigmoid flexure region

Question 9

Which of the following describes the specific orientation and placement of the sigmoid flexure in the anatomy of the bull's penis?

Accepted Answer

It is located in a post-scrotal position, maintained by a pair of retractor penis muscles.

Answer

It is located at the base of the glans penis to facilitate rotational movement.

Answer

It is located in a pre-scrotal position, similar to the boar.

Answer

It is located within the pelvic canal, adjacent to the prostate gland.

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