National League for Nursing (NLN PAX) Practice Exam

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In which human body system does meiosis take place?

Cardiovascular system
Nervous system
Reproductive system
Endocrine system

The correct answer is: Reproductive system

Meiosis is a specialized form of cell division that occurs exclusively in the reproductive system. This process is essential for the formation of gametes, which are the sperm in males and eggs in females. During meiosis, the chromosome number is halved, resulting in haploid cells that can combine during fertilization to form a diploid zygote, ensuring genetic diversity in offspring. The other body systems mentioned do not participate in meiosis. The cardiovascular system is responsible for the circulation of blood, the nervous system handles the transmission of signals throughout the body, and the endocrine system regulates hormones that control various body functions, but none of these are involved in the production of gametes or the meiotic process. Thus, the reproductive system is the correct and only option where meiosis takes place.