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  2. Cardiac conduction system - Wikipedia

    en.wikipedia.org/wiki/Cardiac_conduction_system

    A slow heart rate of 60 or less beats per minute is defined as bradycardia. A fast heart rate of more than 100 beats per minute is defined as tachycardia. An arrhythmia is defined as one that is not physiological such as the lowered heart rate that a trained athlete may naturally have developed; the resting heart rates may be less than 60 bpm.

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  4. Outline of the human brain - Wikipedia

    en.wikipedia.org/wiki/Outline_of_the_human_brain

    Imagination – the ability to form new images and sensations that are not perceived through sight, hearing, or other senses; Wakefulness. Pre-attentive processing – the unconscious accumulation of information from the environment; Preconscious – information that is available for cognitive processing but that currently lies outside ...

  5. Outline of human anatomy - Wikipedia

    en.wikipedia.org/wiki/Outline_of_human_anatomy

    The following outline is provided as an overview of and topical guide to human anatomy: Human anatomy is the scientific study of the morphology of the adult human. It is subdivided into gross anatomy and microscopic anatomy. Gross anatomy (also called topographical anatomy, regional anatomy, or anthropotomy) is the study of anatomical ...

  6. Diffusion-weighted magnetic resonance imaging - Wikipedia

    en.wikipedia.org/wiki/Diffusion-weighted...

    Clinically, trace-weighted images have proven to be very useful to diagnose vascular strokes in the brain, by early detection (within a couple of minutes) of the hypoxic edema. [ 13 ] More extended DTI scans derive neural tract directional information from the data using 3D or multidimensional vector algorithms based on six or more gradient ...

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  9. Neuroanatomy - Wikipedia

    en.wikipedia.org/wiki/Neuroanatomy

    Neuroanatomy is the study of the anatomy and organisation of the nervous system. Pictured here is a cross-section showing the gross anatomy of the human brain.. Neuroanatomy is the study of the structure and organization of the nervous system.