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The heart

QuestionAnswer
Which side is the pulmonary circuit right
What do arteries do carry blood away from the heart
What do veins do carry blood to the heart
What connects veins and arteries capillaries
what allows for gas and nutrient exchange capillaries
How many layers is pericardium 2
What lines the pericardial cavity pericardium
what carries blood to the body systemic circuit
what carries the blood to the gas exchange circuit pulmonary
When the ap moves to moderator band: The papillary muscles contracts, chordae tendinae (ct) tense, keep cusps from flipping back into atria
First step in the neural control of the heart rate Centers in medula receive chemical (carbon dioxide) / pressure info
Second step in the neural control of the heart rate SA/AV nodes innervated
Third step in neural control of the heart rate Acetylcholine opens K+ channels, slows depolarization = decreased hr
Other third step in neural control of the heart rate norepinephrine opens Na+, Ca+ channels, speeds depolarization increases hr
What happens in Ventricular Systole? Ventricles contract pressure exceeds the pressure in the atria AV close, Pressure in the ventricles exceeds the pressure in the aorta or pulmonary trunk, SL open, blood fill aorta or pulmonary trunk
What happens in Ventricular Diastole pressure in ventricles is less than aorta or plum trunk, SLv close, Pressure in ventricles less then in atria avs open passive
First Heart sound S1/Lupp AV valves close start of ventricular systole
Second Heart sound S2 / Dupp SL valves close start of ventricular diastole
End diastolic volume EDV blood volume in each ventricle at end of ventricular diastole
End systolic volume ESv blood volume in each ventricle at end of ventricular systole
Stroke Volume SV Blood volume pumped from each ventricle in one heart rate = EDV-ESV
Cardiac Output CO Blood volume pumped from each ventricle in one minute
Created by: maevedelt
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