Cardiovascular

• Tricuspid valve


  Located between the RIGHT ATRIUM & RIGHT VENTRICLE
• Myocardium


  The thick layer of the heart wall that contains contractile cardiac muscle tissue
• Stroke volume


  The volume of blood pumped out by each ventricle with each beat of the heart
• Sinotrial (SA) node


  Located in the RIGHT ATRIUM
• Bicuspid valve


  Prevents blood from flowing from the LEFT VENTRICLE TO LEFT ATRIUM when the ventricles contract
• Tachycardia


  A heart rate over 100 bpm
• Tricuspid valve


  The right AV valve
• Premature atrial contraction (PAC)


  An irregular heart rhythm characterized by atrial contractions occurring before the expected time
• Ventricular fibrillation


  The rapid, irregular, and useless contractions of the ventricles
• Myocardial infarction


  The correct term for a heart attack
• Arrhythmia


  The correct term for an abnormal sinus rhythm
• Heart rate


  The number of times heart beats in one minute
• EKG


  A recording of the electrical activity of the heart
• Bundle of His


  The area that transmits impulses to the right and left ventricles, causing them to contract
• Baroreceptors


  The pressure sensitive nerve endings located in the atrium, aortic arch, & carotid arteries that detect changes in blood pressure
• Bradycardia


  A normal heart rhythm but with a rate below 60 bpm, common among athletes
• Arrhythmia


  An irregular heartbeat or rhythm
• Depolarize


  To contract, as the atria & ventricles do as the heart beats
• Repolarize


  To relax, as the atria and ventricles do as the heart beats
• Purkinje fibers


  Part of the impulse conducting network of the heart that rapidly transmits impulses throughout the ventricles, causing ventricular contraction
• The pacemaker of the heart under normal circumstances is called the Sinotrial (SA) node
• Systole means contraction of the ventricles
• An increased firing of parasympathetic nervous system causes decreased cardiac output
• An automatic external defibrillator stops the heartbeat
• The right side of the heart is responsible for pulmonary circulation, moving deoxygenated blood to the lungs
• 120/80 mmHg is considered a normal blood pressure
• Stroke


  1. Cause: Bleeding in brain, narrow/blocked blood vessels

  2. Effects: Numbness, weakness, problems speaking, seeing etc.

  3. Treatments: IV meds, procedures, surgeries, emergency measures, rehabilitation