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  2. Apex beat - Wikipedia

    en.wikipedia.org/wiki/Apex_beat

    Apex beat. The apex beat (lat. ictus cordis ), also called the apical impulse, [1] is the pulse felt at the point of maximum impulse ( PMI ), which is the point on the precordium farthest outwards (laterally) and downwards (inferiorly) from the sternum at which the cardiac impulse can be felt. The cardiac impulse is the vibration resulting from ...

  3. Apical Pulse: Definition, Location, and More - Healthline

    www.healthline.com/health/apical-pulse

    Overview. Your pulse is the vibration of blood as your heart pumps it through your arteries. You can feel your pulse by placing your fingers over a large artery that lies close to your skin. The ...

  4. Point spread function - Wikipedia

    en.wikipedia.org/wiki/Point_spread_function

    The point spread function ( PSF) describes the response of a focused optical imaging system to a point source or point object. A more general term for the PSF is the system's impulse response; the PSF is the impulse response or impulse response function (IRF) of a focused optical imaging system. The PSF in many contexts can be thought of as the ...

  5. Atrioventricular node - Wikipedia

    en.wikipedia.org/wiki/Atrioventricular_node

    The AV node is labelled 2. The atrioventricular node or AV node electrically connects the heart 's atria and ventricles to coordinate beating in the top of the heart; it is part of the electrical conduction system of the heart. [1] The AV node lies at the lower back section of the interatrial septum near the opening of the coronary sinus, and ...

  6. How to Check Heart Rate: 5 Methods and What Is Normal

    www.healthline.com/health/how-to-check-heart-rate

    Method 1: Radial pulse. To check your pulse using this method, you’ll be finding the radial artery. Place your pointer and middle fingers on the inside of your opposite wrist just below the ...

  7. Nervous System Anatomy, Diagram & Function | Healthline

    www.healthline.com/human-body-maps/nervous-system

    Nervous System. The nervous system has two major parts: the central nervous system (CNS) and the peripheral nervous system (PNS ). The central system is the primary command center for the body ...

  8. Pole–zero plot - Wikipedia

    en.wikipedia.org/wiki/Pole–zero_plot

    A pole-zero plot is plotted in the plane of a complex frequency domain, which can represent either a continuous-time or a discrete-time system: Continuous-time systems use the Laplace transform and are plotted in the s-plane: s = σ + j ω {\displaystyle s=\sigma +j\omega } Real frequency components are along its vertical axis (the imaginary line.

  9. Heart murmur - Wikipedia

    en.wikipedia.org/wiki/Heart_murmur

    This will decrease the distance from wall of the chest to the apex of the heart. This will help to examine the point of maximal impulse. Also, this will help to hear extra heart sounds (S3 or S4). With the patient sitting upright. With the patient seated, leaning forward and holding breath after exhalation.