Nervous System

    Nervous System
    Which sequence of ion movements describes the action potential?
    Sodium ions are in high concentration outside the cell (and in low concentration inside the cell). The correct sequence is Na in followed by K out.
    Author: rikazzz Comment
    Nervous System
    In the spinal cord, the ascending tracts contain:
    The term “ascending” means travelling upwards to the brain. Hence this must be sensory information from the body. The tracts are white as they are myelinated which gives the nerves a white appearance.
    Author: rikazzz Comment