honeypot link
skip to main content
Professional
Consumer
MERCK MANUAL
Consumer Version
HEALTH TOPICS
HEALTHY LIVING
SYMPTOMS
EMERGENCIES
DRUG INFO
RESOURCES
COMMENTARY
ABOUT US
HEALTH TOPICS
HEALTHY LIVING
Home
/
Quick Facts: Men's Health Issues
/
Biology of the Male Reproductive System
/
Biology of the Male Reproductive System
Expand all
Collapse all
Overview of the Male Reproductive System
What is the male reproductive system?
How does the male reproductive system work?
What are sperm and semen?
What is an erection?
What is ejaculation?
What happens after ejaculation?
What can go wrong with a man's reproductive system?
Puberty in Boys
What is puberty?
What causes puberty in boys?
What changes happen during puberty in boys?
What can go wrong with puberty?