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60 Cards in this Set
- Front
- Back
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R. Atrium
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Receives deoxygenated blood from these major vessels:
Superior Vena Cava Inferior Vena Cava Coronary sinus |
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Superior Vena Cava
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A large vein formed by the union of the two brachiocephalic veins and the azygos vein that receives blood from the head, neck, upper limbs, and chest, and empties into the right atrium of the heart.
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Inferior Vena Cava
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A large vein formed by the union of the two common iliac veins that receives blood from the lower limbs and the pelvic and abdominal viscera and empties into the right atrium of the heart.
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Coronary sinus
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Most of the deoxygenated blood from the myocardium drains into a large vascular sinus in the coronary sulcus on the post. surface of the heart.
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Right ventricle
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Also receives deoxygenated blood
Blood passes from ___ ____ into pulmonary valve into pulmonary trunk into pulmonary arteries Pulmonary trunk Pulmonary artery |
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Pulmonary trunk
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Blood ejected from Rt. ventricle flows into the ___, which branches into pulmonary arteries.
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R. pulmonary arteries
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Deoxygenated blood gets carried to the right lung
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L. pulmonary arteries
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Carries deoxygenated blood to the left lung.
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L. Atrium
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Receives oxygenated blood returning to the heart from the pulmonary veins.
one of the upper chambers of the heart R. pulmonary veins L. pulmonary veins |
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Ascending aorta
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largest artery of the body
right and left coronary arteries branch from here. |
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R. Coronary artery
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supplies small branches to the r. atrium. It continues inf. to the r. auricle and ultimitely divides into the post. interventricular and marginal branches.
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L. coronary artery
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passes inf. to the left auricle and divides into the ant. interventricular and circumflex branches.
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away ; toward
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Exception in the heart, Arteries carry blood _____ from heart and veins carry blood ______ heart.
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deoxygenated ; oxygenated
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Exception in heart, pulmonary arteries carry _____ blood and pulmonary veins carry _________ blood.
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L. coronary artery
R. coronary artery |
Ascending aorta
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Brachiocephalic
R. subclavian artery R. common carotid L. common carotid artery L. subclavian |
Aortic arch
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Aortic arch
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ascending aorta turns to the L. which descends and ends at the level of the intervertebral discs btwn. 4th and 5th thoracic vertebrae.
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Brachiocephalic trunk
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divides to form the r. subclavian artery and r. common carotid artery
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R. Subclavian artery
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extends from brachiocephalic trunk to the first rib and then passes into the armpit. Then gen. distribution of the artery is brain and spinal cord, neck, shoulder, thoracic viscera wall, and scapular muscles
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R. common carotid
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divides into the right external and right internal carotid arteries
begins at the bifurcation of the brachiocephalic trunk passes superiorly in the neck to supply structures in the head |
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Lft. Common Carotid
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second branch from the arch of the aorta
divides into the external and internal carotid arteries Supplies oxygenated blood to the head and neck regions of the body |
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Lft. Subclavian
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extends from the aortic arch to the left side of the body.
Supplies oxygenated blood to the arms. |
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Descending aorta
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divided into two portions, the thoracic and abdominal
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Thoracic aorta
Abdominal aorta |
Descending aorta
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Thoracic aorta
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Visceral branch - Paricardial, Bronchial, Esophageal, and Mediastinal arteries
Parietal branch - Posterior intercostal, Subcostal, Superior phrenic arteries |
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Abdominal aorta
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continuation of the arch of the aorta
lies ant. to vertebral column begins at aortic hiatus in the diaphram and ends about L4 vertabrae divides into rt. and lft. common illiac arteries. |
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Pericardial arteries
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Two or three tiny arteries supply blood to the pericardium.
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Bronchial arteries
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One rt. and two lft. arteries supply the bronchial tubes, pleurae, bronchial lymph nodes, and esophagus
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Esophageal arteries
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Four or five arteries supply the esophagus.
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Mediastinal arteries
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Numerous small arteries supply blood to structures in the mediastinum.
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Posterior intercostal arteries
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Nine pairs of arteries supply the intercostal, pectoralis major and minor, and serratus anterior muscles
overlying subcutaneus tissue and skin mammary glands vertebrae, meninges, and spinal cord |
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Subcostal arteries
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The left and right arteries have a distribution sim. to that of the post. intercostals
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Superior phrenic arteries
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Small arteries supply the sup. and post. surfaces of the diaphram.
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Atrioventricular valves
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A heart valve made up of membranous flaps or cusps that allows blood to flow in one direction only, from an atrium into a ventricle.
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Right AV valve (tricuspid)
Lft. AV valve or bicuspid or mitral valve |
Atrioventricular valves
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Semilunar valves
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allows ejection of blood from the heart into the arteries, but prevents backflows of blood into the ventricles.
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Pulmonary semilunar valves
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goes to pulmonary trunk
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Aortic semilunar valves
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goes to aorta
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valve support
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trabeculae carnae
papillary muscle chordae tendinae |
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Coronary circulation
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The pathway followed by the blood from the ascending aorta through the blood vessels supplying the heart and returning to the right atrium.
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Arteries
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A blood vessel that carries blood away from the heart.
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Lft. Coronary
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Ant. interventricular branch
Circumflex branch |
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Rt. Coronary
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Post. interventricular branch
Marginal branch |
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Anterior interventricular branch
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Located in anterior interventricular sulcus and supplies oxygenated blood to walls of both ventricles.
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Circumflex branch
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lies in coronary sulcus
distributes oxygenated blood to walls of Lt. ventricles and Lt. atrium. |
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Post. interventricular branch
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Located in posterior interventricular sulcus; supplies both ventricles
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Marginal branch
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Supplies right ventricle
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Coronary sinus
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large vein at back of heart
deoxygenated blood from myocardium empties into right atrium |
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Vascular sinus
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thin walled vein that lacks smooth muscle
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Principal tributaries of coronary sinus
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carries blood to coronary sinus
Great cardiac vein Middle cardiac vein |
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Great cardiac vein
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drains ant. aspect of heart
drain part of heart supplied by L. coronary artery - L. and R. ventricle and L. atrium. |
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Middle cardiac vein
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drains posterior aspect of heart
drains part of heart supplied by R. coronary artery - L. and R. ventricles |
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Conductive System
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the route that delivers action potentials throughout the heart muscle
assure that cardiac chambers are stimulated to contract in a coordinated manner (pump) |
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Sinoatrial node or sa node or pacemaker
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sets up heart beat
where cardiac excititation begins located in R. atrial wall inferior to opening to superior vena cava |
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Atrioventricular (AV) node
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The action potential slows considerably providing time for atria to empty their blood into the ventricles.
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Atrioventricular (AV) bundle or "bundle of His"
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The only site where action potentials can conduct from atria to ventricles
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Right and Left bundle branches
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action potentials course throught the interventricular septum toward apex of heart.
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Conduction myofibers (purkinje fibers)
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rapidly conduct the action potential, first to the apex of the ventricular myocardium, pushing blood upward to the semilunar valves.
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Surface projections
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outlining organs dimensions w/ respect to landmarks on surface of body.
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Veins
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carries blood towards the heart
Coronary sinus Vascular sinus |
