Chemoreceptor - detects chemical changes in the blood, Baroreceptor - detects pressure changes in the blood, Proprioreceptor - detects movement in joints, ligaments and tendons, Medulla - part of the brain controlling rates, Sino atrial node - node in the heart, causes atria to contract, Atrio-ventricular node - node in the heart, causes ventricles to contract, Respiratory muscles - Intercostal muscles and diaphragm, Phrenic nerve - Nerve carrying messages to the respiratory muscles, Parasympathetic nervous system - decreases breathing and heart rate, Sympathetic nervous system - increases breathing and heart rate,

HR and breathing regulation key terms

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