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A & P 2 Straighterline Final Exam Questions With Solved Solutions.

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When erythrocytes are destroyed, which of the following events occurs? - Answer The globin portion of the molecule is broken down into amino acids. Type AB blood - Answer has both A and B antigens on the red cells In the platelet release reaction, - Answer ADP and thromboxanes stimul...

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  • October 28, 2024
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A & P 2 Straighterline Final Exam
Questions With Solved Solutions.
When erythrocytes are destroyed, which of the following events occurs? - Answer The globin portion
of the molecule is broken down into amino acids.



Type AB blood - Answer has both A and B antigens on the red cells



In the platelet release reaction, - Answer ADP and thromboxanes stimulate other platelets to become
activated.



The hematocrit is - Answer d. the percentage of RBCs in a given volume of blood.



What vitamin is necessary to produce many clotting factors in the liver? - Answer Vitamin K



A white blood cell engulfing a bacterium is an example of blood functioning in - Answer a. protection.



The oxygenated form of hemoglobin is called - Answer oxyhemoglobin



The only formed elements that possess a nucleus when mature are the - Answer c. 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? - Answer b. chromosome
11



Blood consists of a matrix of plasma and cells; blood is a subtype of ______ tissue. - Answer e.
connective

,The ability of white blood cells to leave the circulation and enter tissues is called - Answer b.
diapedesis.



The nervous system and certain chemicals can cause the constriction of a blood vessel. This is known as -
Answer b. vascular spasm



The cascade of events in the intrinsic pathway can be set into motion when _____ comes into contact
with collagen. - Answer factor XII



If a blood buffer is absent, what function of the blood would be compromised? - Answer regulation of
pH



What is tissue thromboplastin? - Answer A 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? - Answer megakaryoblast



Macrophages are derived from - Answer monocytes



Which of the following events is one of the three main stages of coagulation? - Answer conversion of
fibrinogen to fibrin



The "pacemaker" of the heart is the - Answer SA node



Where is blood moving during the period of ejection? - Answer Ventricles to great vessels



The adult heart averages ___________ grams. - Answer 250-300



The epicardium - Answer covers the surface of the heart.

,Energy for contraction of myocardial cells comes primarily from - Answer aerobic respiration in the
mitochondria



What event(s) occur during the QRS complex of an ECG? - Answer depolarization of the ventricles and
repolarization of the atria



The relationship between preload and stroke volume is known as - Answer Starling Law of the heart.



Cardiac muscle cells - Answer are maintained by an extensive capillary network.



During the isovolumetric contraction period of the cardiac cycle, - Answer AV and semilunar valves are
closed.



Pressure in the right ventricle must exceed pressure in the ____ before the right ventricle can eject
blood. - Answer pulmonary trunk



In the cardiac cycle, - Answer all four chambers of the heart are in diastole at the same time.



What cardiac arrhythmia will have no QRS complex as a symptom? - Answer ventricular fibrillation



Which of the following is administered to the people suffering from myocardial infarction following onset
of symptoms? - Answer Tissue plasminogen activator (t-PA)



Which of the following might increase the risk for cardiovascular disease? - Answer chronic stress



Aortic stenosis results from - Answer a narrowed opening through the aortic valve



An incompetent pulmonary semilunar valve could result in less blood reaching the - Answer lungs

, 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? - Answer
Angioplasty



Angina pectoris is chest pain caused by reduced - Answer blood 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 - Answer infarction



What abnormal heart rhythm could be caused by an elevated body temperature, excessive sympathetic
stimulation, or toxic conditions? - Answer tachycardia



Which type of vessel has the greatest compliance? - Answer veins



Which of the following thoracic organs is supplied by a parietal branch of the thoracic aorta? - Answer
the intercostal muscles



Increased pressure in the aortic arch will activate the aortic arch reflex and cause - Answer increased
parasympathetic stimulation of the heart.



According to Poiseuille's law, - Answer if resistance increases, flow decreases



The vein that ascends along the medial side of the lower limb to the femoral vein is the ____ saphenous
vein and the vein that ascends along the posterior aspect of the leg to the popliteal vein is the _____
saphenous vein. - Answer great; small



If someone has a blood pressure reading of 110/70 mm Hg, their pulse pressure would be - Answer 40
mm Hg.



What is the most important means by which capillary exchange occurs? - Answer diffusion

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