Human Reproduction
Tamil Nadu Board · Class 12 · Zoology
Flashcards for Human Reproduction — Tamil Nadu Board Class 12 Zoology. Quick Q&A cards covering key concepts, definitions, and formulas.
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Get startedWhat are the four main functions of the human reproductive system?
Answer
The four main functions are: (1) Production of gametes (sperms and ova), (2) Transport and sustenance of gametes, (3) Nurturing of the developing offspring, and (4) Production of reproductive hormones…
Describe the structure and function of the scrotum in the male reproductive system.
Answer
The scrotum is a pouch of skin hanging outside the abdominal cavity that contains and protects the testes. Its primary function is thermoregulation—it maintains a temperature 2-3°C lower than normal b…
What is the difference between Sertoli cells and Leydig cells in the testes?
Answer
Sertoli cells (nurse cells) are located in the seminiferous tubule epithelium and provide nourishment to developing sperms until maturation. They also secrete inhibin for feedback control of sperm pro…
Explain the pathway of sperm transport from the site of production to ejaculation.
Answer
Sperms are produced in seminiferous tubules and travel through: (1) Tubulus rectus → (2) Rete testis → (3) Vasa efferentia → (4) Epididymis (storage and maturation) → (5) Vas deferens → (6) Ejaculator…
What are the components of semen and what is the role of each accessory gland?
Answer
Semen is composed of sperms and seminal plasma from three glands: (1) Seminal vesicles secrete alkaline fluid with fructose (energy), ascorbic acid, prostaglandins, and vesiculase enzyme (enhances mot…
Define spermatogenesis and explain its duration and output.
Answer
Spermatogenesis is the process of sperm formation in the seminiferous tubules of testes. Starting at puberty, spermatogonia undergo mitotic division to form primary spermatocytes, which undergo two me…
Describe the structure of a mature human sperm and explain the function of each part.
Answer
A mature sperm has four main parts: (1) Head - contains acrosome (with hyaluronidase enzyme for egg penetration) and nucleus (haploid DNA), (2) Neck - contains centrioles that aid in first cell divisi…
What is the location and primary function of the ovary?
Answer
The ovaries are the primary female sex organs located one on each side of the lower abdomen, measuring 2-4 cm. They are covered by germinal epithelium and contain ovarian stroma divided into cortex (c…
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