Module 13 Definition

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volcano73@gmail.com
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73127
Filename:
Module 13 Definition
Updated:
2011-03-15 18:11:48
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Biology module definitions
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Science definitions for module 13
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  1. Vertebrae
    Segments of bone or some other hard substance that are arranged into a backbone.
  2. Notochord
    A rod of tough, flexible material the runs the length of a creature's body, providing the majority of it's support.
  3. Endoskeleton
    A skeleton on the inside of a creature's body, typically composed of bone or cartilage.
  4. Bone Marrow
    A soft tissue inside the bone that produces blood cells.
  5. Axial skeleton
    The portion of the skeleton that supports and protects the head, neck, and trunk.
  6. Appendicular skeleton
    The portion of the skeleton that attaches to the axial skeleton and has the limbs attached to it.
  7. Closed circulatory system
    A circulatory system in which the oxygen-carrrying blood cells never leave the blood vessels.
  8. Arteries
    Blood vessels that carry blood away from the heart.
  9. Capillaries
    Tiny, thin-walled blood vessels that allow the exchange of gases and nutrients between the blood and cell.
  10. Veins
    Blood vessels that carry blood back to the heart.
  11. Olfactory lobes
    The regions of the brain that receive signals from the receptors in the nose.
  12. Cerebellum
    The lobe that controls involuntary actions and refines muscle movement.
  13. Medulla oblongata
    The lobes that coordinate vital functions, such as those of the circulatory and respiratory system, and transport signals from the brain to the spinal cord.
  14. Internal fertilization
    The process by which the male places sperm inside the female's body, where the eggs are fertilized.
  15. External fertilization
    The process by which the female lays eggs and the male fertilizes them once they are outside of the female.
  16. Oviparous development
    Development that occurs in an egg which is hatched outside the female's body.
  17. Ovovivipaous developments
    Development that occurs is an egg which is hatched inside the female's body
  18. Viviparous development
    Develpment that occurs inside the female, allowing the offspring to gain nutrients and vital substances from the mother through a placenta.
  19. Anadromous
    A lifecycle in which creatures are hatched in fresh water, migrate to salt water as adults, and then go back to fresh water in order to reproduce.
  20. Bile
    A mixture of salts and phospholipids that aids in the breakdown of fat.
  21. Atrium
    A heart chamber that receives blood.
  22. Ventricle
    A heart chamber from which blood is pumped out
  23. Ectothermic
    Lacking an internal mechanism for regulating body heat.
  24. Hibernation
    A state of exrememly low metabolism.

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