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Human Anatomy and Physiology Lesson 1 Atoms and Molecules 101

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이 집합의 용어 (14)

  • Systemic anatomy

    is the study of the physical structure of the body's organ systems.

  • Organ systems

    are groups of structures, like the mouth, trachea, and lungs, that work together to perform a specific function, such as breathing.

  • Physiology

    is the study of how the structures of your body work

  • four elements

    hydrogen (H), carbon (C), oxygen (O), and nitrogen (N).

  • Atoms

    The smallest complete unit of physical matter

  • Elements

    Atoms of the same type are called

  • molecule

    Two or more atoms that bond together form

  • True or False

    Molecules can be the same substance as the original atoms

    True

  • I see two different numbers for each element on the Periodic Table of Elements. What is the difference between an element's mass number and its atomic number?

    All atoms of a particular element have the same number of protons. The number of protons is what determines the atomic number. Different atoms of the same element, though, can have different numbers of neutrons, which affects its mass (which is the number of protons added to the number of neutrons).

  • The smallest complete unit of physical matter.

    Atom

  • A subatomic particle with a negative charge that circles around an atom's nucleus.

    Electron

  • A subatomic particle with a positive charge that is found in the nucleus of the atom.

    Proton

  • A subatomic particle that does not have an electrical charge that is found in the nucleus of an atom.

    Neutron

  • Molecule

    A particle composed of two or more atoms.