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