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Heart 1
| Term | Definition |
|---|---|
| What are the heart and roots of the great vessels enclosed in | pericardium |
| What are the two serous membranes | Visceral pericardium and parietal pericardium |
| Visceral pericardium | inner layer of sac thats attached to the heart like skin of apple |
| Parietal pericardium | outer sac thats fibrous and is made of connective tissue |
| pericardial cavity | space between pericardial coverings |
| serous fluid | thin layer of water fluid that lessens friction caused by pumping of the heart |
| pericarditis | inflammation of the serous membranes covering the heart |
| How is the heart situated | obliquely between the lungs |
| The rib cage aids in | protection for the heart from forces of the external environment |
| is the heart static or not static | not static |
| Right border | curved line from 3rd rib to junction of xyphoid process and body of sternum. |
| Left border | curved line from 2nd rib to left 5th intercoastal space |
| Lower border | line passing through junction of body and xyphoid process of sternum |
| How far does heart extend | 3rd rib |
| how far does pericardial sac extend | 2nd rib |
| anterior surface | formed by right atrium and right ventricle |
| inferior surface | surface on which heart rests and is formed by both ventricles |
| Grooves | partitions between chambers and where coronary blood vessels run |
| atrioventricular sulcus | separates atria from ventricles and origin of right and left coronary artery and circumflex artery |
| anterior/posterior interventricular sulci | separates right and left ventricles and contains inter ventricular arteries |
| What is the heart wall composed of | epicardium myocardium and and endocardium |
| Epicardium | Visceral, outermost, fibrous CT, coronary vessels |
| myocardium | middle, cardiac muscle, conduction capabilities |
| endocardium | innermost, simple squamos, endothelial cells, valves are also covered with this. |
| How do you enter the heart | superior or inferior ven cava or the coronary sinus |
| coronary sinus | carries blood from the coronary circulation |
| 1st step in path of heart | enter through a major vein |
| 2nd step in path of heart | Right atrium |
| Right atrium has | right atrial septum at the left and a fossa oval and the left atrium and tricuspid valve and SA and AV nodes for conduction |
| 3rd step in path of heart | Tricuspid valve |
| 4th step in path of heart | Right ventricle |
| Right ventricle has | papillary muscles, chordae tendineae and pulmonary trunk |
| Papillary muscles | fingerlike extensions from wall of heart, prevents inversion and stabilizes valve. NOTHING TO DO WITH CLOSING OF THE VALVE!!!! |
| chordae tendineae | strings on a guitar |
| pulmonary trunk | divides into 2 pulmonary arteries which carry deoxygenated blood to the lungs. |
| How do arteries return | via pulmonary veins carrying oxygenated blood |
| 5th step in path of heart | pulmonary semilunar valve |
| 6th step | pulmonary artery |
| 7th step | lungs |
| What do you do in the lungs | pick up oxygen and release co2 |
| How do you return to heart | through 1 of 4 pulmonary veins |
| Pulmonary veins | carry oxygenated blood away from the heart |
| 8th step | left atrium |
| 9th step | Bicuspid valve |
| 10th step | left ventricle |
| 11th step | aortic semilunar valve |
| 12th step | leave heart and enter arch of the aorta |
Created by:
maheensa
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