Which structure is NOT involved in the process of an erection of the penis?
A) corpora cavernosa
B) corpus spongiosum
C) prepuce
D) erectile tissue
C
Explanation: A) Blood filling the corpora cavernosa produces an erection.
B) Blood filling the corpus spongiosum produces an erection.
C) Correct! The prepuce, or foreskin of the penis, is not involved in the process of an erection.
D) Blood filling erectile tissue in the penis produces an erection.
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