Term
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Definition
| Pumps over a million times a year through 60,000 miles of blood vessels |
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Definition
Fibrous pericardium and Serous pericardium.
- Pericardial Fluid: secreted into pericardial cavity to reduce friction. |
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Definition
| tough, inelastic, for protection and anchorage. prevents overstretching. |
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Definition
| – thinner, more delicate membrane – double layer (parietal layer fused to fibrous pericardium, visceral layer also called epicardium) |
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Term
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Definition
| first layer of the heart wall. visceral layer of serous pericardium. |
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Term
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Definition
| Heart Muscle. 95% of heart is heart muscle |
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Definition
| inner layer of the heart. smooth lining of chambers of heart-continuous with blood vessel's inner lining. |
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Definition
| separates right and left ventricle. |
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Term
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Definition
Right = Tricuspid
Left = Bicuspid (mitral) |
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Term
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Definition
| Pulmonary Semilunar (right ventricle and pulmonary trunk) and Aortic Semilunar (left ventricle and aortic arch) |
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Term
| Flow of blood through heart |
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Definition
| Inf. + Sup. Vena Cava -> Right Atrium -> Tricuspid -> Right Ventricle -> Pulmonary Semilunar valve -> pulmonary artery -> lungs -> pulmonary vein -> left atrium -> bicuspid -> left ventricle -> aortic semilunar valve -> arch of aorta. |
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Term
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Definition
| Right side of the heart and lungs |
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Definition
| Left side of the heart and everywhere else in the body. |
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Definition
| all cardiac muscle fibers in a network are physically connected by these. |
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Term
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Definition
| aid in conduction between networked cardiac muscle fibers |
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Term
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Definition
| Atria contract as a unit (except for a small piece on the floor of the right atria) |
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Term
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Definition
| Ventricles contract as a unit |
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Term
| Sinoartrial Node (SA Node) |
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Definition
| Pacemaker, initiates each heartbeat. Creates an electrical signal that travels through gap junctions in the intercalated discs. |
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Term
| Atriventricular node (av node) |
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Definition
| located in atrium under sa node. transmits electrical signal from atrium to ventricles. |
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Term
| AV Bundle aka Bundle of His |
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Definition
| receives electrical signal from av node and spreads it over the ventricles. does not cause ventricular contraction. |
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Term
| Right and Left Bundle Branches |
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Definition
| Receive electrical signal from bundle of his and send it down interventricular septum to perkinje fibers. |
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Term
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Definition
| Arise from Bundle branches and cause rapid spread to distant regions of ventricles. Then the ventricle contracts sending blood up through semilunar valves. |
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Term
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Definition
| Measures the electrical activity of cardiac muscle. depolarization (-) and repolarization (+). |
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Term
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Definition
| Atrial Depolarization, 1st wave |
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Term
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Definition
| Rapid Ventricle depolarization. Down up down up |
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Definition
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Definition
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| Four actual sounds, only 2 loud enough to be heard... lupp dupp |
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Term
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Definition
| Innermost coating of arteries. elastic tissue & endothelial lining |
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Term
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Definition
Thickest layer: elastic fibers and smooth m. fibers.
High compliance of arteries due to this coat |
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Definition
| External coating. elastic and collagen fibers |
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Term
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Definition
| Inside space of the artery |
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Term
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Definition
| large arteries near the heart. The really big ones that feed all other arteries of the body. They function as pressure reservoir and recoil with large flows of blood. |
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Term
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Definition
| Capable of vasoconstriction and vasodilation. Rely more on the tunica media to move the blood rather than elasticity. Very thick walls |
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Term
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Definition
Microscopic vessels connect arterioles to venules
Composed of a single layer of endothelial cells. |
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Term
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Definition
| BF from arterioles to capillaries to venules |
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Term
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Definition
Many phagocytic white blood cells leave blood into inflamed or infected tissue
- Formed from many capillaries joining. |
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Term
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Definition
| Carry blood toward the heart. Composed of similar three layers as arteries but less elastic tissue and smooth muscle. Much more fibrous connective tissue. Have valves so no back-flow. Muscle contraction key to getting blood back to heart. |
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Term
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Definition
Transportation: movement of nutrients and gasses
Regulation: regulates body’s pH by getting rid of H+ ions
Protection: Blood clots and White Blood Cells fight disease |
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Term
| Physical Characteristics of Blood |
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Definition
| Sticky, 38 Degrees C, 8% of body mass, Males: 5-6L, Females: 4-5L |
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Term
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Definition
1. Plasma: Watery liquid containing dissolved substances
2. Formed Substances: Cells/Cell Fragments |
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Definition
| 55% of blood, mostly water but 8.5% solutes. |
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Term
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Definition
| Platelets, RBC(Erythrocytes), WBC(Leukocytes ) |
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Definition
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Definition
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Definition
| Brachiocephalic Trunk -> Splits to right common carotid, right vertebral. -> main trunk continues to right subclavian, right axillary -> after the elbow it splits into radial and ulnar arterty. |
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Term
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Definition
| Abdominal aorta -> right common illiac -> right femoral -> right popliteal -> right anterior and posterior tibial -> right dorsal artery of foot (dorsalis pedis) |
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Definition
| Regulates blood pressure in the brain, safety mechanism. Connects vertebral arteries at basilar artery. These meet with the internal carotid |
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Term
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Definition
Right Coronary Artery -> Marginal Branch
Left Coronary Artery -> Circumflex Branch -> Anterior Inter-ventricular Branch |
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Term
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Definition
| Detours venous blood from digestive organs to the liver for filtration and storage. Blood enters from Hepatic Artery and Hepatic Portal Vein. |
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Term
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Definition
| 1 Vein (oxygenated blood) 2 arteries (deoxygenated blood). Supply baby with nutrients, oxygen, gets rid of wastes. |
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Term
| Fetal Circulation Pathway |
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Definition
| First goes to the baby’s liver -> then to the heart -> right atrium -> left atria through the foramen ovale (skipping the lungs) -> left ventricle -> other parts of the body -> out through the umbilical arteries. |
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Term
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Definition
| Rapid resting heart rate above 100 |
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Term
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Definition
| slow resting heart rate below 50 |
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Term
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Definition
Systole = pressure generated by left ventricle contraction
Diastole = pressure remains when left ventricle relaxes
120/80 = 120mmHg when left ventricle contracts. 80mmHg when left ventricle relaxes |
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Definition
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Definition
| sounds heard when taking blood pressure. |
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