Study material generic cover image

Summary Human Development

- Human Development
- Sabine Spijker
- 2018 - 2019
- Vrije Universiteit Amsterdam
- Biomedische Wetenschappen
538 Flashcards & Notes
Scroll down to see the PDF preview!
  • This + 400k other summaries
  • A unique study and practice tool
  • Never study anything twice again
  • Get the grades you hope for
  • 100% sure, 100% understanding
Remember faster, study better. Scientifically proven.
Trustpilot Logo

A snapshot of the summary - Human Development

  • 2. The reproductive system in males

    This is a preview. There are 25 more flashcards available for chapter 04/02/2019
    Show more cards here

  • Why are spermatozoa placed 'outside' of the body?
    Spermatozoa like to develop 1 degrees celsius colder than the body temperature of 37 degrees celsius. The testes are located in the scrotum to have this colder temperature.
  • What is the structure of the testis?
    The testis consist of seminiferous tubules and connective tissue.
  • What are sustentacular (Sertoli) cells?
    Sustentacular (Sertoli) cells sustain and promote development of sperm.
  • What are the two types of male germ cells (spermatogonia)?
    Type A: duplicate themselves via mitosis. This is symmetric division.
    Type B: develop into sperm via meiosis. This is asymmetric division.
  • What causes variability in meiosis? Why is this necessary?
    Recombination causes variability in meiosis. This is necessary to increase genetic variation.
  • What is the acrosomal cup? What does it contain?
    The acrosomal cup is the fusion of the nucleus and the Golgi apparatus. It contains enzymes to penetrate the egg (hyaluronidase & acrosin).
  • Why does sperm lack organelles?
    It reduces size and mass and it must absorb nutrients from the surrounding fluid.
  • What is the anatomy of a spermatozoon?
    A spermatozoon contains a head, neck, middle piece, and tail.
  • What does the head of a spermatozoon consist of?
    The head of a spermatozoon contains the nucleus and chromosomes.
  • What does the neck of a spermatozoon consist of?
    Contains centrioles (anterior: mitotic spindle; posterior: continuous microtubules for movement of flagellum).

To read further, please click:

Read the full summary
This summary +380.000 other summaries A unique study tool A rehearsal system for this summary Studycoaching with videos
  • Higher grades + faster learning
  • Don't study anything twice
  • 100% sure, 100% understanding
Discover Study Smart