Test your knowledge of human reproduction with these multiple-choice questions covering all aspects of the chapter.
First, read the main notes on Human Reproduction, then try to answer the questions below without looking back!
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1. Which of the following is characteristic of human reproduction?
Humans are sexually reproducing and viviparous, meaning they give birth to live young.
2. Sperm formation in males, unlike ovum formation in females, is a process that:
Sperm formation continues even in old men, but formation of ovum ceases in women around the age of fifty years.
3. Where is the male reproductive system primarily located?
The male reproductive system is located in the pelvis region.
4. The pouch that encloses the testes outside the abdominal cavity is called the:
The testes are situated outside the abdominal cavity within a pouch called scrotum.
5. What is the primary function of the scrotum in human males?
The scrotum helps in maintaining the low temperature of the testes (2–2.5°C lower than the normal internal body temperature) necessary for spermatogenesis.
6. How many compartments are typically found in each human testis?
Each testis has about 250 compartments called testicular lobules.
7. Sperms are produced in which specific structures within the testicular lobules?
Each lobule contains one to three highly coiled seminiferous tubules in which sperms are produced.
8. The inner lining of seminiferous tubules consists of which two types of cells?
Each seminiferous tubule is lined on its inside by two types of cells called male germ cells (spermatogonia) and Sertoli cells.
9. What is the primary role of Sertoli cells in the seminiferous tubules?
Sertoli cells provide nutrition to the germ cells.
10. Interstitial spaces, located outside the seminiferous tubules, contain which cells responsible for secreting androgens?
The regions outside the seminiferous tubules called interstitial spaces, contain small blood vessels and interstitial cells or Leydig cells. Leydig cells synthesise and secrete testicular hormones called androgens.
11. Which of the following is NOT a male sex accessory duct?
The male sex accessory ducts include rete testis, vasa efferentia, epididymis and vas deferens. Seminal vesicle is an accessory gland.
12. The duct formed by the joining of a duct from the seminal vesicle and the vas deferens is called the:
The vas deferens receives a duct from seminal vesicle and opens into urethra as the ejaculatory duct.
13. The male external genitalia, known as the penis, is made up of special tissue that aids in:
The penis is the male external genitalia. It is made up of special tissue that helps in erection of the penis to facilitate insemination.
14. Which of the following components is rich in fructose, calcium, and certain enzymes and constitutes seminal plasma?
The male accessory glands include paired seminal vesicles, a prostate and paired bulbourethral glands. Secretions of these glands constitute the seminal plasma which is rich in fructose, calcium and certain enzymes.
15. The secretions of bulbourethral glands primarily contribute to:
The secretions of bulbourethral glands also helps in the lubrication of the penis.
16. Which structure is responsible for producing the female gamete (ovum) and several steroid hormones?
Ovaries are the primary female sex organs that produce the female gamete (ovum) and several steroid hormones (ovarian hormones).
17. The funnel-shaped part of the oviduct closer to the ovary, possessing finger-like projections, is called the:
The part closer to the ovary is the funnel-shaped infundibulum. The edges of the infundibulum possess finger-like projections called fimbriae.
18. What is the function of the fimbriae in the female reproductive system?
The fimbriae help in collection of the ovum after ovulation.
19. The wall of the uterus consists of three layers. Which layer undergoes cyclical changes during the menstrual cycle?
The inner glandular layer called endometrium that lines the uterine cavity. The endometrium undergoes cyclical changes during menstrual cycle.
20. Which layer of the uterus exhibits strong contractions during the delivery of the baby?
The middle thick layer of smooth muscle, myometrium, exhibits strong contraction during delivery of the baby.