A & P2 Straighterline Final Exam Questions And Answers / Straighterline Anatomy And Physiology 2024

A & P2 Straighterline Final Exam Questions And Answers / Straighterline Anatomy And Physiology 2024 When erythrocytes are destroyed, which of the following events occurs? - answerThe globin portion of the molecule is broken down into amino acids. Type AB blood - answerhas both A and B antigens on the red cells In the platelet release reaction, - answerADP and thromboxanes stimulate other platelets to become activated. The hematocrit is - answerd. the percentage of RBCs in a given volume of blood. What vitamin is necessary to produce many clotting factors in the liver? - answerVitamin K A white blood cell engulfing a bacterium is an example of blood functioning in - answera. protection. The oxygenated form of hemoglobin is called - answeroxyhemoglobin The only formed elements that possess a nucleus when mature are the - answerc. leukocytes Plasma - answer. is the liquid matrix of the blood. An increased amount of heparin in the blood might - answer. prevent clotting process. On which chromosome is there a mutation that leads to sickle cell anemia? - answerb. chromosome 11 Blood consists of a matrix of plasma and cells; blood is a subtype of ______ tissue. - answere. connective The ability of white blood cells to leave the circulation and enter tissues is called - answerb. diapedesis. The nervous system and certain chemicals can cause the constriction of a blood vessel. This is known as - answerb. vascular spasm The cascade of events in the intrinsic pathway can be set into motion when _____ comes into contact with collagen. - answerfactor XII If a blood buffer is absent, what function of the blood would be compromised? - answerregulation of pH What is tissue thromboplastin? - answerA compound released by damaged tissue that initiates the extrinsic clotting pathway A deficiency of which of the following stem cells would result in a marked increase in the clotting time of blood? - answermegakaryoblast Macrophages are derived from - answermonocytes Which of the following events is one of the three main stages of coagulation? - answerconversion of fibrinogen to fibrin The "pacemaker" of the heart is the - answerSA node Where is blood moving during the period of ejection? - answerVentricles to great vessels The adult heart averages ___________ grams. - answer250-300 The epicardium - answercovers the surface of the heart. Energy for contraction of myocardial cells comes primarily from - answeraerobic respiration in the mitochondria What event(s) occur during the QRS complex of an ECG? - answerdepolarization of the ventricles and repolarization of the atria The relationship between preload and stroke volume is known as - answerStarling Law of the heart. Cardiac muscle cells - answerare maintained by an extensive capillary network. During the isovolumetric contraction period of the cardiac cycle, - answerAV and semilunar valves are closed. Pressure in the right ventricle must exceed pressure in the ____ before the right ventricle can eject blood. - answerpulmonary trunk In the cardiac cycle, - answerall four chambers of the heart are in diastole at the same time. What cardiac arrhythmia will have no QRS complex as a symptom? - answerventricular fibrillation Which of the following is administered to the people suffering from myocardial infarction following onset of symptoms? - answerTissue plasminogen activator (t-PA) Which of the following might increase the risk for cardiovascular disease? - answerchronic stress Aortic stenosis results from - answera narrowed opening through the aortic valve An incompetent pulmonary semilunar valve could result in less blood reaching the - answerlungs A patient has been diagnosed with mild heart disease. Tests show that some of the coronary arteries are partially occluded. Which of the following is the best course of action to treat the disease? - answerAngioplasty Angina pectoris is chest pain caused by reduced - answerblood supply to cardiac muscle. Coronary artery disease can diminish myocardial blood flow resulting in the death of myocardial cells. This condition is known as a myocardial - answerinfarction