Term
| Which arteries branch directly off aorta first? |
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Definition
| R and L coronary arteries (supply nutrients to cardiac tissue) |
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Term
| Right coronary artery branches into...? |
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Definition
| Posterior interventricular artery (BACK of heart) & marginal artery (RIGHT side of heart) |
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Term
| Left coronary artery branches into...? |
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Definition
| Anterior interventricular artery (FRONT of heart) & circumflex artery (LEFT side of heart) |
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Term
| Cardiac veins. What do they do? What are the 3 names? |
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Definition
| they take deoxygenated blood from the myocardium. 1) great cardiac vein (left side) 2) middle cardiac vein (posterior), 3) small cardiac vein (right side). AND coronary sinus drains into the R.A. with bad blood (huge and in back) |
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Term
| Semilunar valves are: aortic and pulmonar valves. They can be heard in... |
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Definition
| 2nd intercostal space (2nd & 3rd rib) |
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Term
| Bicuspid & Tricuspid sounds are heard in... |
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Definition
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Term
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Definition
| is a mass of cardiac muscle fibers that work together (due to connecting fibers & intercalated discs) |
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Term
| SA node (sinoatrial) is what and located where |
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Definition
| the pacemaker! and located near Superior v.cava opening |
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Term
| Atrioventricular (AV)node located where? Where's the AV bundle located? |
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Definition
| AV node located in interartrial septum. AV bundle located interventricular septum. |
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Term
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Definition
| P wave corresponds to atrial contraction. QRS complex corresponds to ventricular contraction. |
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Term
| Regulation of cardiac cycle: roles of SA node, Vagus nerve and Medulla Oblongata? |
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Definition
| SA node: controls heart rate Vagus: has parasympathetic fibers which decrease heart rate M.O: balances BOTH para and sympathetic actions |
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Term
| What's the blood flow pathway through the circulatory system, starting with R.A. through lungs through aorta through body and back to heart? |
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Definition
Right atrium --> Tricuspid Valve --> Right ventricle --> *Pulmonary valve* --> Pulmonary Trunk --> *R/L Pulmonary arteries* --> Capillaries of R/L lungs -->Alveoli for gas exchange --> Pulmonary veins --> Left atrium --> Bicuspid/Mitral valve --> Left Ventricle --> Aortic valve --> Aorta --> Systemic arteries --> Body tissues --> Systemic veins --> Superior and Inferior vena cava + Coronary Sinus
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Term
Lubb.
What closes?
Where does blood fill up in the heart?
Where does blood flow out of the heart? |
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Definition
Shutting of bicuspid & triscuspid valves.
Blood fills Atria.
Ventricular systole (Blood flows out of ventricles into pulmonary trunk and aorta) |
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Term
Dupp.
What closes?
What part of heart fills up?
Where does blood flow? |
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Definition
Ventricular Diastole.
Semilunar valves close: pulmonary & aortic.
Ventricles fill up.
Blood flows from atria to ventricles. |
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Term
| What's a nickname for SA node? |
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Definition
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Term
| SA node during atrial or ventricular contraction? |
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Definition
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Term
| SA node corresponds with which part of EKG graph? |
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Definition
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Term
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Definition
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Term
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Definition
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Term
| AV node corresponds with which part of EKG graph? |
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Definition
| QRS, the big hump (R being the peak of it) and then S is the little dip down |
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Term
| Arteries BLANK, Veins BLANK. |
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Definition
| Arteries DIVIDE, Veins MERGE. |
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Term
| HEART. arterioles to capillaries to venules. HEART. |
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Definition
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Term
| myocardium tissue is BLANKest and most BLANK of the tissues |
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Definition
| myocardium tissue is THICKEST and most ACTIVE of the heart tissues |
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Term
| Layers of pericardium/coverings from Outer to Inner |
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Definition
Fibrous - anchors heart in place
Parietal - Serous fluid here.
Visceral - continuous with outer layer of heart wall, the epicardium. Serous fluid. |
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Term
| Heart wall layers from Outer to Inner |
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Definition
Epicardium
Myocardium - cardiac muscle
Endocardium |
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Term
| which is bigger and which is more numerous? Veins or Arteries? |
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Definition
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