Unit 7 and 8 Notes
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Created by:
ALins12 on October 17, 2011
Subjects:
Classes:
Health Science II Lakeshore High, Seniors
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57 terms
Terms | Definitions |
|---|---|
 cardiovascular | pertaining to the heart and the blood vessels |
| pericardium | the double walled membrane sac that encloses the heart |
| pericardial fluid | between the layers, prevents friction when the heart contracts |
| epicardium | the external layer of the heart and also is part of the inner layer of the pericardial sac |
| myocardium | the middle and thickest of the three layers, consists of cardiac muscle |
| endocardium | the lining of the heart, forms the inner surface that comes in direct contact with blood being pumped through the heart |
| atria | the two upper chambers of the heart, are the receiving chambers |
| interatrial septum | seperates the atria |
| ventricles | the two lower chambers of the heart |
| interventricular septum | the pumping chambers that seperate the ventricles |
| tricuspid valve | controls the opening between the right atrium and the right ventricle |
| pulmonary semilunar valve | located between the right ventricle and the pulmonary artery, |
| mitral valve | located between the left atrium and the left ventricle |
| aortic semilunar valve | located between the left ventricle and the aorta |
| semilunar | half-moon |
| pulmonary circulation | the flow of blood between the heart and lungs |
| electrical impulses | determines the rate and regularity of the heartbeat |
| conduction system | another term for the electrical impulses |
| sinotrial node | located in the posterior wall of the right atrium, part of the conduction system |
| sinotrial node, atrioventricular node, and HIs | conduction system parts |
| natural pacemaker | sinotrial node is also reffered to as this |
| atrioventricular node | located on the floor of the right atrium near the interatrial septum, makes up part of the conduction system |
| p wave | contraction of the atria |
| qrs complex | shows the contraction of the ventricles |
| t wave | relaxation of the ventricles |
| lubb sound | first sound of the heartbeat |
| dupp sound | second and shorter sound of the heartbeat |
| lumen | the opening withing vessels through which the blood flows |
| endarterial | pertaining to the interior or lining of an artery |
| aorta | main trunk of the arterial system |
| coronary artery | branches from the aorta and supplies blood to the myocardium |
| arterioles | the smaller thinner branches of arteries that carry blood to the capillaries |
| venules | small veins that join to form larger veins |
| venae cavae | the two large veins that enter the heart |
| superior venae cavae | brings blood from the upper portion of the body |
| inferior venae cavae | brings blood from the lower portion of the body |
| pulse | rhythmic expansion and contraction of an artery produced by the pressure of blood moving |
| blood pressure | a measurement of the amount of pressure exerted against the walls of the vessel |
| systolic pressure | occurs when the ventricles contract, the highest pressure against the walls of the blood vessels |
| diastolic pressure | occurs when the ventricles are relaxed, the lowest pressure against the walls of the blood vessels |
| systolic over diastolic | blood pressure is measured this way |
| plasma | fluid that contains nutrients, hormones, and waste products |
| serum | plasma with clotting proteins removed |
| fibrinogen and prothombin | clotting proteins found in plasma |
| erythrocytes | red blood cells |
| hemoglobin | the iron of erythrocytes, transports oxygen from the lungs to the tissues of the body |
| reticulocyte | an immature erythrocyte |
| leukocytes | white blood cells |
| neutrophils | formed in red bone marrow, the most prominent RBCs |
| basophils | promote the inflammatory response |
| eosinophils | respond to allergic reactions |
| lymphocytes | red blood cells that protect the body against disease |
| monocytes | protect against disease and and elevated form of this means a chronic infection |
| thrombocytes | also known as platelets, are the smallest form of elements of the blood |
| types of blood | AB, A, B, and O |
| Blood type O | universal doner |
| Blood type AB | universal recipient |
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