Science Final Exam 2

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emb395
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20492
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Science Final Exam 2
Updated:
2010-05-23 23:02:02
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science
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Science Notes 2
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  1. The muscular, baglike organ attached to the lower end of the esophagus that continues the physical digestion of a meal is called...
    stomach
  2. What kind of digestion does your stomach perform?
    chemical and mechanical digestion
  3. What is linked to the small intestine, but does not move food through it?
    gallbladder
  4. What organ of the digestive system stores, compacts, and then eliminates indigestible material from the body?
    large intestine
  5. What is the path of sperm?
    testes....epidiymis....vas deferens....urethra
  6. If the first day of the menstual cycle is the onset of menstration, on what day does ovulation occur?
    14
  7. Name sexually transmitted diseases.
    chlamydia, AIDS, genital herpes
  8. Fertilization occurs in the _____ and implantation occurs in the _____.
    fallopian tube, uterus
  9. NOT a sexually transmitted disease....
    infertility
  10. The process of ovulation in humans....
    begins at puberty
  11. B
  12. Beginning in the 4th week, a developing human has....
    heart beat
  13. As soon as menstruation is over, the uteris prepares for....
    ovulation
  14. In sexual reproduction, the female parent produces sex cells called....
    eggs
  15. The male parent produces sex cells called....
    sperm
  16. When an egg's nucleus joins with a sperm's nucleus, a new kind of cell is created called...
    zygote
  17. Human cells contain how many chromosomes?
    46
  18. Eggs and sperm contain _____ chromosomes.
    23
  19. In humans, meiosis, creation of sex cells involves the division of one cell with 46 chromosomes into 4 sex cells with ______ chromosomes each.
    11 or 12
  20. What animal reproduces by external ferilization in water?
    a frog
  21. What makes sperm
  22. What makes sperm and testosterone?
    testes
  23. The principal male sex hormone is ....
    testosterone
  24. The skin covered sac that hangs from a male body is called the...
    scrotum
  25. A healthy adult male produces several hundred million _____ each day.
    sperm
  26. What is the time of life when the sex organs of both males and females become mature?
    Puberty
  27. As sperm swim through the vas deferns, they mix with fluids from several glands, creating a mixture called....
    semen
  28. To leave the body, semen passes through the vas deferens into the _____, a tube that runs through the penis.
    urethra
  29. The ______ transfers semen into the female's body during sexual intercourse.
    penis
  30. In the female reproductive system, the ______ produces the eggs.
    ovaries
  31. The 2 ovaries produce sex hormones, such as________ that regulate the release of eggs and direct the development of female characteristics.
    estrogen and progesterone
  32. An ovary contains....
    many eggs, each as the same stage of development
  33. During ______, an egg is ejected through the ovary wall.
    ovulation
  34. The _____ leads from each ovary to the uterus.
    fallopian tube
  35. The ______ is the organ where a baby grows and develops.
    uterus
  36. Every month starting at _______, the lining of the uterus thickens in preparation for pregnancy.
    menstruation
  37. ____ is the monthly discharge of blood and tissue from the uterus.
    menstruation
  38. What happens to an egg if it is not fertilized?
    It is removed through menstruation.
  39. The egg is fertilized in the....
    fallopian tube
  40. The ____ contains a network of blood vessels that provide the embryo with oxygen and nutrients from the mother's blood.
    umbilical cord
  41. The ____ connects the embryo to the placenta.
    umbilical cord

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