Preview

Meiosis and Male Sexual Characteristics

Good Essays
Open Document
Open Document
4178 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Meiosis and Male Sexual Characteristics
Anatomy II Exam 4

1. The two main functions of the testes are ____________ and ___________.
2. The production of sperm is an ______________ function.
3. The production of hormones is an _____________ function.
4. The internal 2° male sexual characteristics are __________, ______, _________, __________, __________, ___________, and ___________.
5. The external 2° male sexual characteristics are _______,______.
6. The size and shape of the testes is ______________.
7. The ___________ suspends the testes in a sac-like structure called ___________.
8. The spermatic cord passes through the __________ down into the scrotum.
9. What are the components of the spermatic cord?
10. When does testosterone secretion first begin?
11. Testosterone causes _____________ @ 8th month of fetal development.
12. The movement of the testes during descent is aided by a fibromuscular cord called the _______________.
13. What does the gubernaculum do after descent of the testes?
14. ___________ is when the testes fail to descend.
15. If one or both testes doesn't descend, ______________ die.
16. Approximately _____% of births have cryptorchidism.
17. The parietal serous membrane enclosing each testes is the ___________.
18. The visceral serous membrane enclosing each testes is the ___________.
19. The tunica albuginea divides the testes into ___________.
20. How many seminiferous tubules are in each lobule?
21. How long is each tubule?
22. Each seminiferous tubule is lined with ________ cells and ______ cells.
23. The function of the spermatogenic cells is _____________.
24. The two functions of the sertoli cells are __________ and _________.
25. The function of prison cells is __________.
26. Between seminiferous tubules are clusters of cells called ____________.
27. Meiosis for spermatogenic cells is called _____________.
28. _____________ are undifferentiated cells that line the periphery of the seminiferous

You May Also Find These Documents Helpful

  • Good Essays

    D. What is the function of the urethra? How does its structure support this function?…

    • 1088 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Sperm Quiz

    • 2079 Words
    • 9 Pages

    48.|This is the time from the onset of labor to the complete dilation of the cervix.|…

    • 2079 Words
    • 9 Pages
    Good Essays
  • Satisfactory Essays

    A 22 year old married female comes to endocrinologist for evaluation, she want to have kids but has not attained her menarche (primary amenorrhea). She also noticed a mass in the right groin (undescended testis), not associated with pain. No c/o vomiting, abdominal pain or any other associated complication. She also have frequent back pain and knee joint pains (osteoporosis).…

    • 240 Words
    • 1 Page
    Satisfactory Essays
  • Powerful Essays

    Medical Terminology Quiz

    • 1948 Words
    • 8 Pages

    _____3. Which type of tissue is responsible for contractions that allow movement of organs or the entire body? 
a) muscle tissue b) nervous tissue c) epithelial…

    • 1948 Words
    • 8 Pages
    Powerful Essays
  • Good Essays

    Without the sperm and the egg to form life the reproduction of humans, or any creature for that matter, would not take place. All creatures would become old and would have no offspring to carry on their genetic characteristics or ever their name. They would only be in this life until it was finally snuffed out in some way or another. Fortunately though, there is sexual arousal, which allows a male and a female to indulge in their desire to satisfy their sexual urges, or their mere desire to mate and create new life.…

    • 1030 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Joints and Body Movements

    • 1239 Words
    • 5 Pages

    B. Why are synarthroses an important component of fibrous joints? These joints are weight bearing and the joints…

    • 1239 Words
    • 5 Pages
    Good Essays
  • Powerful Essays

    Sexual Selection Lab

    • 742 Words
    • 3 Pages

    |Body length and an isopod’s speed have no affect on its chances of predator avoidance. |…

    • 742 Words
    • 3 Pages
    Powerful Essays
  • Good Essays

    Spencer A. Rathus, J. S.-R. (2005). Human Sexuality in a World of Diversity, sixth edition. Allyn and Bacon, Pearson Education, Inc.…

    • 875 Words
    • 4 Pages
    Good Essays
  • Better Essays

    For any evolution to gain some legacy, surviving is not enough without reproduction. In the world, over 90% of all the species have sexual reproduction. In this case, two individuals of a certain species from each sex have to mate so that they can produce offspring. Reproduction is seen as an expensive ordeal which has potential of exerting a considerable evolutionary pressure. This pressure was portrayed by Darwin as sexual selection operating through some members of a given species. In terms of mating, members of a given species may have an advantage over others in respect to mating hence resulting in a form of selection. The increase in the mating success…

    • 1926 Words
    • 8 Pages
    Better Essays
  • Better Essays

    The everyday function of the male reproductive system is to produce, store and transport sperm and semen and to discharge sperm into the female vagina for fertilisation to occur. The male reproductive system is also responsible for producing the male sex hormone, testosterone.…

    • 1080 Words
    • 5 Pages
    Better Essays
  • Good Essays

    Asexual reproduction involves only one parent individual, be in plant or animal. Asexual reproduction has many advantages. It is safe, certain (there are no problems of finding a receptive mate) and can give rise to large numbers of offspring very rapidly. The offspring produces are almost all genetically identical to the parent organism, and so a successful genetic combination can be passed on without change. This is an important advantage of asexual reproduction until living conditions change in some way. However, the introduction of a new disease to an environment, a change in temperature or human intervention can cause the total destruction of a group of genetically identical organisms, because if one cannot cope with the new environment, neither can all the others. One strategy for asexual reproduction is Fission (method of reproduction found in many invertebrate organisms).…

    • 259 Words
    • 2 Pages
    Good Essays
  • Good Essays

    The Male Sexual Anatomy

    • 1196 Words
    • 5 Pages

    In Greek art, the male human nude was used as a canon of human perfection. The sensuous male form in motion was considered the crowning achievement of Greek sculpture. Its asymmetrical balance, this motion while at rest, and the resulting harmony of opposites is the essence of male beauty. The following will discuss the male sexual anatomy, physiology, and overall sexual health. In examining the male sexual body, the anatomy encompasses both the external and the internal sex organs. The external sex organs consist of the penis and the scrotum. The internal sex organs consist of the testes, genital ducts, and the fluid producing glands. The systems of internal and external organs that are the male genitals are also referred to as the urogenital system.<br><br>The penis is the male organ that is responsible for the transmission of urine and semen from the body. It is an expanding flexible rod which, splits into an Y and is attached to the underside of the pubic bone. It consists of fibrous tissue, nerves, blood vessels, and three cylinders of erectile tissue. This tissue soaks up blood and expands when the brain signals certain arteries to begin pumping blood through, which produces an erection. The purpose of an erection in the reproductive process is to allow the penis to become firm enough to enter a vagina.<br><br>The scrotum is a loose sac of skin, fascia, and smooth muscle that encloses and supports the testes outside the body at an optimum temperature for the production of sperm. The scrotum is divided into two parts with each containing a testis. The testes produce sperm and the sex hormone testosterone. "In most men the left testis hangs somewhat lower than the right one, although the opposite may sometimes occur." (Byer 153) The epididymis is a coiled tube about 20ft long, which runs along the posterior side of the testis. It stores sperm and can retain them for up to six weeks, during which time the sperm become mature. The viability of the sperm in the…

    • 1196 Words
    • 5 Pages
    Good Essays
  • Good Essays

    The system facilitates reproduction in human beings. Reproduction involves first of all sexual intercourse in which there is ejaculation of sperms, by the male, into the female’s reproductive tract. Ejaculation is in form of semen. Sperms travel to fertilize eggs in females. This results in fertilization leading to the development of the baby. Function of reproductive system in females is to produce eggs and to nourish developing offsprings. On the other hand, male reproductive system is to produce sperms.…

    • 402 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    the human life cycle

    • 7180 Words
    • 24 Pages

    The mature spermatozoon is now suspended in the lumen, it will then break away and float down the tube towards the epididymis for storage.…

    • 7180 Words
    • 24 Pages
    Powerful Essays
  • Satisfactory Essays

    It is designed to : Produce female egg cells for reproduction , to transport the ove to the site of fertilization , It produces femle sex hormones that maintain the reproductive cycle .…

    • 295 Words
    • 2 Pages
    Satisfactory Essays