Terms : Hide Images
| 5541397127 | P wave | atrial depolarization 1 |  | 0 |
| 5541397128 | P-R Interval | Span of time from the start of the P wave until the start of the Q wave 4 | | 1 |
| 5541397129 | P-R segment | End of P deflection to start of Q deflection End of 1 beg. of 2 | | 2 |
| 5541397130 | R wave | C |  | 3 |
| 5541397131 | Q wave | B | | 4 |
| 5541397132 | S wave | D | | 5 |
| 5541397133 | QRS interval/Complex | ventricular depolarization 2 | | 6 |
| 5541397134 | S-T segment | Start of S defection to start of T deflection 5 | | 7 |
| 5541397135 | Q-T interval | Span of time from the start of the Q wave until the end of the T wave 6 | | 8 |
| 5541397136 | T wave | Ventricular repolarization E |  | 9 |
| 5541397137 | U wave |  | 10 | |
| 5541397138 | R-R interval | Peak of R wave to peak of next R wave One complete heart beat | 11 | |
| 5541555397 | resting membrane potential | determined by the conductance to K+ and approaches the K+ equilibrium potential | 12 | |
| 5541563140 | ________ brings positive charge into the cell and ________ the membrane potential | inward current, depolarizes | 13 | |
| 5541569073 | ______ takes positive charge out of the cell and ________ the membrane potential | outward current, hyperpolarizes | 14 | |
| 5541576039 | What maintains ionic gradient across cell membranes? | ATPase (Na+,K+-adenosine triphosphatase) | 15 | |
| 5541589563 | phase 0 | upstroke | 16 | |
| 5541591423 | phase 1 | initial repolarization | 17 | |
| 5541591424 | phase 2 | plateau of action potential | 18 | |
| 5541594071 | phase 3 | repolarization | 19 | |
| 5541594073 | phase 4 | resting membrane potential | 20 | |
| 5541603012 | produced by the activation of Na+ channels | (ventricular action potential) phase 0 | 21 | |
| 5541627373 | produced by inactivation of Na+ channels | (VAP) phase 1 | 22 | |
| 5541632197 | caused primarily by the activation of Ca2+ channels | (VAP) phase 2 | 23 | |
| 5541653946 | caused by closer (inactivation) of Ca2+ channels and K+ efflux through various types of K+ channels | (VAP) phase 4 | 24 | |
| 5541397139 | Intrinsic conduction system |  | 25 | |
| 5541397140 | Cardiac pacemaker cells | create rhythmic impulses that set the pace for blood pumping and directly control heart rate | 26 | |
| 5541397141 | Sinoatrial (SA) node | located inferior to the entrance of the superior vena cava in the right atrium | 27 | |
| 5541397142 | Atrioventricular (AV) node | in the lower atrial sept at the junction of the atria and ventricles | 28 | |
| 5541397143 | AV bundle (bundle of His) | connects the atria to the ventricles | 29 | |
| 5541397144 | Bundle branches | conduct the impulses through the interventricular septum | 30 | |
| 5541397145 | Subendocardial conducting network (Purkinje fibers) | depolarizes the contractile cells of both ventricles | 31 | |
| 5541397146 | Electrocardiogram (ECG or EKG) | graphic recording of the electrical changes occurring during the cardiac cycle | 32 | |
| 5541397147 | Segment | consists of the region between two waves | 33 | |
| 5541397148 | Interval | contains a segment and one or more waves | 34 | |
| 5541397149 | Tachycardia | heart rate over 100 bpm | 35 | |
| 5541397150 | Bradycardia | heart rate below 60 bpm | 36 | |
| 5541397151 | Fibrillation | condition of rapid uncoordinated heart contractions (prolonged tachycardia may progress to this) | 37 | |
| 5541397152 | Prolonged P-R interval sign of ___ | first-degree heart block | 38 | |
| 5541397153 | Systole | ventricular contraction | 39 | |
| 5541397154 | Diastole | ventricular relaxation | 40 | |
| 5541397155 | Cardiac cycle | equivalent to one complete heart beat during which both atria and ventricles contract and relax | 41 | |
| 5541397156 | Quiescent period | 42 | ||
| 5541397157 | Murmurs | abnormal heart sounds | 43 | |
| 5541397158 | Pulse | alternating surges of pressure in an artery that occur with each contraction and relaxation of the left ventricle | 44 | |
| 5541397159 | Pulse Pressure | systolic-diastolic | 45 | |
| 5541397160 | Apical Pulse | apex of the heart | 46 | |
| 5541397161 | Which pulse (apical/radial) may be slightly faster than the other because of a slight lag in time as blood rushes from the heart into the large arteries where it can be palpated | Apical pulse | 47 | |
| 5541397162 | Pulse deficit | simultaneously measuring the apical and radial pulse rates | 48 | |
| 5541397163 | A large difference of ___ __ could indicate cardiac impairment, low CO, or abnormal heart rhythms | pulse deficit | 49 | |
| 5541397164 | 9 areas to palpate pulse |  | 50 | |
| 5541397165 | Blood pressure | the pressure the blood exerts against any unit area of the blood vessel walls (generally measured int he arteries) (mmHg) | 51 | |
| 5541397166 | Systolic pressure | the pressure in the arteries at the peak of ventricular contraction | 52 | |
| 5541397167 | Diastolic pressure | the pressure during ventricular relaxation | 53 | |
| 5541397168 | Sounds of Korotkoff | indicate the resumption of blood flow into the forearm | 54 | |
| 5541397169 | First Korotkoff sound | snapping sound first heard at the *systolic pressure* | 55 | |
| 5541397170 | Second Korotkoff sound | murmurs b/w systolic and diastolic pressures | 56 | |
| 5541397171 | Third Korotkoff sound | loud, crisp tapping sound | 57 | |
| 5541397172 | Fourth Korotkoff sound | within 10mmHg above diastolic BP | 58 | |
| 5541397173 | Fifth Korotkoff sound | silence as the cuff pressure drops below diastolic BP | 59 | |
| 5541397174 | Sphygmomanometer | blood pressure cuff | 60 | |
| 5541397175 | Pulse wave velocity | PWV=Distance/(PTT finger - PTT elbow) PTT pulse transit time | 61 | |
| 5541397176 | Mean arterial pressure (MAP) | MAP=diastolic pressure + (pulse pressure/3) | 62 | |
| 5541397177 | Venous Pressure | Pv= [1.056 x mm (measured)] / 13.6 | 63 | |
| 5541397178 | Valsalva maneuver | increases intrathoracic pressure by the forced exhalation over a closed glottis. | 64 |
