Internally, the penis contains three cylindrical erectile bodies, the paired and the .

검증된 단계별 안내

Step 1: Understand the anatomy of the penis. The penis contains three cylindrical erectile bodies that are responsible for its structure and function during erection.

Step 2: Recall that two of these erectile bodies are paired structures located on the dorsal side of the penis. These are called the corpora cavernosa.

Step 3: Identify the third erectile body, which is a single, unpaired structure located on the ventral side of the penis. This is called the corpus spongiosum.

Step 4: Note that the corpus spongiosum surrounds the urethra and helps maintain the patency of the urethra during erection, while the corpora cavernosa are primarily responsible for the rigidity of the erection.

Step 5: Fill in the blanks with the correct terms: the paired 'corpora cavernosa' and the 'corpus spongiosum'.

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주요 개념

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Erectile Tissue

Erectile tissue is a type of tissue that can fill with blood and expand, leading to an erection. In the penis, this tissue is primarily found in three cylindrical structures: the corpora cavernosa and the corpus spongiosum. The ability of these tissues to engorge with blood is crucial for sexual arousal and function.

Corpora Cavernosa

The corpora cavernosa are two cylindrical structures located on the dorsal side of the penis. They are responsible for the majority of the erectile capacity during arousal, as they fill with blood and expand, leading to an erection. Their structural integrity and blood flow are vital for achieving and maintaining an erection.

Corpus Spongiosum

The corpus spongiosum is a single cylindrical structure that surrounds the urethra and runs along the underside of the penis. Unlike the corpora cavernosa, it remains softer during an erection, preventing the urethra from being compressed. This allows for the passage of urine and semen, playing a critical role in reproductive and urinary functions.

Internally, the penis contains three cylindrical erectile bodies, the paired ________ and the ________.