AnatomyLesson 2 of 6 in the course Animal Reproduction and Development

Human Reproductive Anatomy, Sexual Response, and Gametogenesis

5 flashcards · 5 quiz questions · 5 match pairs · 5 fill-in sentences · English

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Summary

This lesson introduces the development of reproductive structures and the anatomy and functions of the male reproductive system.

Early reproductive tissues develop along similar pathways. Some tissues are bipotential, meaning they can develop into different structures. In typical development, signals including testosterone from the gonads promote differentiation of some tissues into structures such as the penis and scrotum. Other corresponding tissues develop into structures such as the clitoris and labia. These pairs are homologous structures because they develop from corresponding embryonic tissues.

All flashcards

What are homologous reproductive structures?
Structures in different sexes that develop from corresponding embryonic tissues, such as the scrotum and labia majora.
What is the role of Sertoli cells?
They support, protect, and promote the development of germ cells in the seminiferous tubules.
What do Leydig cells produce?
Leydig cells produce testosterone and are located between the seminiferous tubules.
What is the function of the epididymis?
It is the site where sperm mature after leaving the testes.
What does the sperm acrosome do?
It contains enzymes that help sperm penetrate the protective coverings around an egg.

Quiz questions

  1. What chromosome-number change does meiosis produce in human gametes?Answer: It reduces the chromosome number from 46 to 23.
  2. When does a secondary oocyte complete meiosis II?Answer: After fertilization occurs.
  3. What do fimbriae do near the end of an oviduct?Answer: They help guide a released egg into the oviduct.
  4. Which phase is characterized by rhythmic, involuntary muscle contractions?Answer: Orgasm.
  5. Which gland contributes most of the volume of semen?Answer: The seminal vesicles.

Based on Biology 2e by Mary Ann Clark, Matthew Douglas, Jung Choi (OpenStax), licensed CC BY 4.0. Adapted into a summary, flashcards and quizzes.

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