HSF II Cardio IV
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| show | when blood flows through vasculature down a pressure gradient
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| Mean Arterial Pressure (MAP) | show 🗑
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| Cardiac Reflexes | show 🗑
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| show | measure of the work of the heart as a pump, volume of blood from a ventricle in 1 minute, CO = SV x HR, therefore, your whole blood volume goes through the heart in 1min
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| Cardiac Reserve | show 🗑
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| show | change the heart rate
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| show | change the contractility of the myocardium i.e. strength of contraction
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| Parasympathetic innervation | show 🗑
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| Sympathetic innervation | show 🗑
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| show | ACh affect slope of prepotential in pacemaker cells. muscarinic M1 receptors, let out K+ and prevent Ca++ and Na+ in.
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| show | NE affect slope of prepotential of pacemaker cardiomyocytes, B1 receptors of autorhythmic cells, increase Na+ and Ca++ influx, increase rate of depolarization
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| Epinephrine on B1 receptors | show 🗑
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| Autonomic Tone | show 🗑
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| Perfusion | show 🗑
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| show | maintain pressure produced during ventricular systole when the heart is not contracting. Diastolic pressure comes from elastic recoil
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| Muscular Arteries | show 🗑
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| show | contraction of skeletal muscle pushes blood back toward the heart
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| Venous valves | show 🗑
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| 3 Factors on Resistance | show 🗑
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| show | carotid and aortic sinus, detect blood pressure/stretch, neural reflex arc. Sinuses are embedded in the smooth muscle of the artery, elastic arteries
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| show | afferent pathway, visceral sensory NIX, in bifurcation of the carotid artery
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| Aortic Sinus | show 🗑
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| Medulla Oblongata | show 🗑
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| show | CAC (cardiac accelerator center, symp), CIC (cardiac inhibitor center, parasymp), VMC (vasomotor center, symp)
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| show | cardiac accelerator center, sympathetic efferent, innervate peripherally to the heart and blood vessels
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| CAC Sympathetic Efferent Innervation | show 🗑
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| Cardiac Sympathetic Innervation | show 🗑
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| VMC Sympathetic Efferent Innervation | show 🗑
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| show | innervate the intrinsic conduction system, has negative chronotropic and limited negative inotropic effects. Decrease CO
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| Chemoreceptors | show 🗑
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| +Chronotropic Hormones | show 🗑
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| +Inotropic Hormones | show 🗑
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| show | EP and NEP
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| show | thyroid hormones and glucagon
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| Baro-and Chemoreceptor Reflexes on decreased MAP | show 🗑
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| Hormonal Reflexes on decreased MAP | show 🗑
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| show | renin-angiotensin-aldosterone system, activation increases MAP, working together in kidneys, body's most important short and long term endocrine blood pressure regulation system
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| Two Basic Mechanisms for Regulating Blood Pressure | show 🗑
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| show | in kidney, source of renin, made of macula densa and JG (granular cells
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| Macula Densa | show 🗑
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| JG Cells | show 🗑
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| Stimuli that increase Renin secretion | show 🗑
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