Heart review

Pathway of blood through the heart

Superior, inferior, vena cava, coronary sinus right atrium, tricuspid valve, right ventricle, pulmonary semilunar valve pulmonary trunk arteries, lungs pulmonary veins left atrium bicuspid valve left ventricle, aortic, semilunar valve, ascending, aorta, aortic, arch, descending aorta thoracic aorta abdominal aorta three left right common iliac arteries, and median sacral artery capillaries veins vena cava

Components of the conduction system of the heart and trace the conduction pathway, pacemaker cells intrinsic

SA node AV node bundle of his left and right bundle branches purkinje fibers

Systole

Heart muscle contracting

Diastole

Heart muscle relaxes, allowing the chamber to fill the heart with blood

Cardiac output

Amount of blood pumped by the heart in a minute

Stroke volume

Amount of blood pumped in one heartbeat

Tachycardia

Fast heartbeat. More than 100 during resting

Brachycardia

Slower than 60 bpm

Blood flow through the body

Aortic arch brachycephalic left common carotid left subclavian

What are the three unpaired branches from the abdominal aorta?

Celiac, superior mesentric, and inferior mesentric

Neural control of heartbeat

Sympathetic