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42 Cards in this Set
- Front
- Back
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Mediastinum
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central compartment of the thoracic cavity
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Endocardium
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layer of tissue that lines the heart; makes valves
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Myocardium
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muscular tissue of the heart
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Pericardium
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double-walled sac; contains the heart and the roots of the great vessels
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Serous Pericardium
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Form membrane
Holds/Makes Pericardial Fluid |
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Fibrous Pericardium
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Dense
Tough Adipose + Vessels attached |
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Septum
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Separates Vesicles
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Right Atrium
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Receives de02 blood from body
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Left Atrium
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Receives 02 blood from Lungs
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Atrium ______ Blood
Ventricles ______ Blood |
Receive & Send
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Right Ventricle
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Sends deO2 blood to lungs
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Left Ventricle
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* MOST MUSCLY *
Sends O2 blood to body |
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Tricuspid Valve
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RIGHT A-V Valve
Between Right Atrium & Ventricle |
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Bicuspid Valve
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AKA Mitral Valve
LEFT A-V Valve Between Left Atrium & Ventricle |
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Pulmonary Semilunar Valve
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Between Right Ventricle & Pulmonary Artery
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Aortic Semilunar Valve
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Between Left Ventricle & Aorta
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Pulmonary Artery
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Carries deO2 blood to lungs
*Only artery with deO2* |
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Aorta
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Carries O2 Blood to body
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Pulmonary Vein
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Carries O2 Blood to Heart (From lungs)
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Superior Vena Cava
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Carries deO2 blood from above heart to heart
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LUBB Sound
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Tricuspid & Bicuspid Close
BONUS: ____ Valves Close |
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DUBB Sound
(Louder or Softer than LUBB?) |
Louder!
Pulmonary & Aortic Semilunar Valves close End of Contraction |
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Systole
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Contraction of Ventricles
.04 Seconds |
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Diastole
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Relaxation of Ventricles
.04 Seconds |
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Stroke Volume
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80ml per ventricle per contraction
== 160ml in Normal! (80 each V.) |
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Cardiac Output
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70 beats per min TIMES 160 ml/per contraction
==11.2 L/min |
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Automaticity
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Self Beating (30 bpm)
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Sinoartrial Valve
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PACEMAKER
Located: Right Corner of R.Atrium Recieves rate from Medulla via Vagus Nerve + ANS |
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Atrioventricular Node
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Located: Septum
Prevents rapid conduction to the ventricles |
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Bundle of His
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Transmits impulse to Purkinje bundles
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Purkinje Bundle
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Purkinje fibers branch to ventricles
Final step of impulse to contract ventricles |
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Vagus Nerve
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Keeps Heart Rate down
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Chemicles Affect Heart Rate:
Acetylchoine UP = |
Heart Rate DOWN
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Chemicles Affect Heart Rate:
Nor Adrenaline UP = |
Heart Rate DOWN (To normal)
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Chemicles Affect Heart Rate:
Nicotine UP = |
Heart Rate UP
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Chemicles Affect Heart Rate:
Alchoholism = |
Heart Rate UP
(Heart is less efficient) |
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Chemicles Affect Heart Rate:
Mushrooms = |
Heart Rate STRONG DOWN
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AGE Affect Heart Rate:
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Baby = UP
20ish = DOWN Old = UP |
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ECG
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--^v--^v--^v--^v-
records the electrical activity of the heart |
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Steps of ECG
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(ANVNP) A Nervous Velociraptor Never Pees
Atria contract Neutrality Ventricles contract Neutrality Positive Electrical Impulse |
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Atrial Fibrilation
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Abnormal Atrium Contraction
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Ventricular Fibrilation
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Abnormal Ventricle Contraction
LEAD TO CARDIAC ARREST |
