Heart Anatomy
Controls opening between left ventricle into the aorta.
What is the aortic valve?
Electrical gateway to the ventricles.
What is the atrioventricular node?
Atrial depolarization.
What is the P wave?
Superficial wall of an artery/vein.
What is tunica externa?
Determines the resistance of blood flow.
What are blood viscosity, vessel length, and vessel radius?
Branches off the ascending aorta for coronary circulation.
What is the left coronary artery?
Cardiac muscle's way of making ATP.
What is aerobic respiration?
Irregular SA-node rhythm.
What is a cardiac arrhythmia?
Capillary that have large gaps between endothelial cells that allows blood plasma to pass through.
What are sinusoids?
Determines control of vasomotion.
What are local control, hormonal control, and neural control?
Ways coronary blood returns to the right atrium.
What is the great cardiac vein, middle cardiac vein, left marginal vein, and coronary sinus?
Functions of intercalated discs.
What are interdigitating folds (increased SA), mechanical junctions (join cardiomyocytes), electrical junctions, or gap junctions (ion flow between cells)?
Definition of the QRS interval (need both parts).
What are atrial repolarization and diastole?
Control flow in capillary beds supplied with metarterioles that link arterioles to capillaries.
What are precapillary sphincters?
Diffusion, transcytosis, filtration, and reabsorption
Part of blood flow that consists of the pulmonary circuit.
What is the pulmonary valve to the pulmonary trunk, pulmonary trunk to arteries, arteries to the lung, lung to pulmonary veins, and veins to the left atrium?
Restarts the SA node so a new action potential can start.
What is repolarization (of the SA node)?
Rapid weak ventricular depolarizations, triggered by a heart attack.
What is ventricular fibrillation?
Types of anastomosis
What are arteriovenous (shunt), venous, and arterial anastomoses?
Mechanisms for venous return.
What are pressure gradients, gravity, skeletal muscle pump, thoracic pump, and cardiac suction?
Coronary venous blood drains directly into this heart chamber by small cardiac veins.
What is the right ventricle?
Ion released into ICF from ECF when depolarization occurs.
What is Ca2+?
Absent P wave, inverted QRS complex, fluttering heartbeats.
What is a premature ventricular contraction?
Difference between blood pressure and pulse pressure.
What is blood pressure is the force that blood exerts against a vessel wall and pulse pressure is the difference between systolic and diastolic pressures.
Reasons for hypovolemic shock.
What is loss of blood volume due to bleeding, burns, and/or dehydration?