Term
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Definition
thin external layer of the heart formed by the visceral layer of the serous pericardium
coronary arteries run on this layer |
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Term
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Definition
| cardiac muscle. middle layer b/t epi and endocardium. thickest layer |
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Term
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Definition
smooth inner surface of the heart, thin layer of endothelium.
conduction fibers in this layer. |
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Term
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Definition
| refers to vessels occupying the coronary sulcus or AV sulcus |
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Term
| ant. and post. interventricular sulci |
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Definition
| surface impression of interventricular septum |
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Term
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Definition
| AKA coronary sulcus. sulcus between the atria and ventricles |
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Term
| when does blood flow to the coronary artery occur. why? |
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Definition
| during diastole. in systole, the coronary arteries are obstructed by the cusps of the aortic semilunar valve. during diastole, the cusps converge in the center to close the valve, allowing blood to flow into the coronary arteries. |
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Term
| origin of coronary artery |
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Definition
| right and left sides of the aorta just superior to the semilunar valve. runs in coronary sulcus. |
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Term
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Definition
| tough connective tissue layer of pericardium partially fused to diaphragm and serous pericardium. |
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Term
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Definition
| mesothelium; transition between the visceral and parietal layer. two layers: parietal pericardium and visceral pericardium. |
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Term
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Definition
| layer of serous pericardium. confluent with the fibrous pericardium. |
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Term
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Definition
| inner layer of the serous pericardium. AKA epicardium, surface of heart. |
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Term
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Definition
| potential space between layers of serous pericardium |
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Term
| transverse pericardial sinus |
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Definition
| sinus between the pulmonary trunk/ aorta and SVC |
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Term
| oblique pericardial sinus |
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Definition
| posterior surface of heart. Beneath ventricles. |
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Term
| companion of phrenic nerve |
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Definition
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Term
| location of phrenic, vagus nerves in the mediastinum |
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Definition
| phrenic is in the front of the mediastinum and the vagus is in the back of the mediastinum |
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Term
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Definition
| ear shaped diverticulum of the right atrium |
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Term
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Definition
AKA pectinate muscles
on anterior, internal surface of the right atrium and left atrium |
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Term
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Definition
| smooth, internal, posterior surface of the right atrium |
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Term
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Definition
| ridge between musculi pectinati and sinus venarum |
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Term
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Definition
| external manifestation of the crista terminalis |
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Term
| location of coronary sinus ostium and valve in the right atrium |
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Definition
| b/t IVC ostium and the right atrioventricular ostium |
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Term
| three cusps of tricuspid valve |
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Definition
| anterior, posterior, and septal cusps |
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Term
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Definition
connected to cusps via chordae tendineae
contracts to prevent tricuspid valve regurgitation
named the same as cusps |
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Term
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Definition
| beams of flesh in the R and L ventricles similar to the muscular pectinati |
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Term
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Definition
| connected to the IV septum and the anterior papillary muscle in the right ventricle. carries electrical conductance to papillary muscle in order for it to know when to contract. |
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Term
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Definition
AKA infundibulum
smooth funnel shaped outflow tract to pulmonary trunk in right ventricle |
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Term
| heart chamber just anterior to esophagus |
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Definition
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Term
| cusps of the bicuspid valve |
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Definition
| anterior and posterior cusps |
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Term
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Definition
| thickened edge of the cusp |
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Term
| which cusp of the aortic valve is not a coronary cusp? |
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Definition
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Term
| location of the SA node in the right atrium |
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Definition
| near the superior end of the crista terminalis |
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Term
| location of AV node in the right atrium |
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Definition
| on the interatrial septum near the ostium of the coronary sinus. |
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Term
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Definition
| continues signal propagation down the membranous septum after the AV node. |
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Term
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Definition
| continues propagation down the interventricular septum after the bundle of his. |
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Term
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Definition
| continues propagation from the right and left bundles; takes to the ventricular myocardium |
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Term
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Definition
| sympathetic and parasympathetic nerves around the aortic arch and bifurcation of trachea. |
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Term
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Definition
from ganglion of the cervical region.
three types: superior, middle, and inferior.
go to cardiac plexus. |
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Term
| thoracic cardiac n branches |
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Definition
| from T2-T6 thoracic ganglia, feed into cardiac plexus |
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Term
| targets for the sup, inf, mid cervical cardiac nn and thoracic cardiac branches |
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Definition
| SA and AV nodes and coronary aa. |
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Term
| effect of sympathetics on heart |
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Definition
| pos. chronotropic (inc. HR) and pos. inotropic (inc force of contraction) |
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Term
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Definition
| on coronary aa, cause dilation with adrenergic stimulation |
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Term
| recurrent laryngeal branch of vagus |
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Definition
| extends on the right around the subclavian artery and on the left around the aortic arch. runs in the groove between the trachea and esophagus to the larynx |
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Term
| location of parasympathetic postganglionic cell bodies for the heart |
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Definition
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Term
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Definition
| designation for the coronary artery which supplies the posterior interventricular septum |
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Term
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Definition
| dilation of aortic lumen at level of 3 aortic valvular cusps. form the bulb of the aorta. |
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Term
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Definition
| branch of LCA. in 37% of patients. trifurcation with circumflex and LAD |
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Term
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Definition
| narrowing of the coronary arteries |
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Term
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Definition
| when blood vessels that supply blood to the heart are blocked, preventing enough oxygen from getting to the heart. |
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Term
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Definition
| heart can no longer pump enough blood to the rest of the body. muscles are weakened. |
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Term
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Definition
| valve problems, get regurgitation |
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Term
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Definition
| compression of the heart that occurs when blood or fluid builds up in the space between the myocardium and the pericardium. |
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