3. How can a sperm be ejected?
A. through ejaculation
B. when taking a bath
C. urination
D. blood circulation
4. It carries the sperm from the testes to the urethra.
A. scrotum
B. testis
C. seminal vesicle
D. vas deferens
5. What is the process that causes the penis to enlarge and become firm?
A. ejaculation
B. erection
C. urination
D. gestation
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