When erythrocytes are destroyed, which of the following events occurs? - CORRECT The globin portion of the molecule is broken down into amino acids.
Type AB blood - CORRECT has both A and B antigens on the red cells
In the platelet release reaction, - CORRECT ADP and thromboxanes stimulate ot...
STRAIGHTERLINE FINAL EXAM WITH
100% ACCURATE ANSWERS
When erythrocytes are destroyed, which of the following events occurs? - CORRECT ✔✔The globin
portion of the molecule is broken down into amino acids.
Type AB blood - CORRECT ✔✔has both A and B antigens on the red cells
In the platelet release reaction, - CORRECT ✔✔ADP and thromboxanes stimulate other platelets to
become activated.
The hematocrit is - CORRECT ✔✔d. the percentage of RBCs in a given volume of blood.
What vitamin is necessary to produce many clotting factors in the liver? - CORRECT ✔✔Vitamin K
A white blood cell engulfing a bacterium is an example of blood functioning in - CORRECT ✔✔a.
protection.
The oxygenated form of hemoglobin is called - CORRECT ✔✔oxyhemoglobin
The only formed elements that possess a nucleus when mature are the - CORRECT ✔✔c. leukocytes
Plasma - CORRECT ✔✔. is the liquid matrix of the blood.
An increased amount of heparin in the blood might - CORRECT ✔✔. prevent clotting process.
On which chromosome is there a mutation that leads to sickle cell anemia? - CORRECT ✔✔b.
chromosome 11
,Blood consists of a matrix of plasma and cells; blood is a subtype of ______ tissue. - CORRECT ✔✔e.
connective
The ability of white blood cells to leave the circulation and enter tissues is called - CORRECT ✔✔b.
diapedesis.
The nervous system and certain chemicals can cause the constriction of a blood vessel. This is known as -
CORRECT ✔✔b. vascular spasm
The cascade of events in the intrinsic pathway can be set into motion when _____ comes into contact
with collagen. - CORRECT ✔✔factor XII
If a blood buffer is absent, what function of the blood would be compromised? - CORRECT ✔✔regulation
of pH
What is tissue thromboplastin? - CORRECT ✔✔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? - CORRECT ✔✔megakaryoblast
Macrophages are derived from - CORRECT ✔✔monocytes
Which of the following events is one of the three main stages of coagulation? - CORRECT ✔✔conversion
of fibrinogen to fibrin
The "pacemaker" of the heart is the - CORRECT ✔✔SA node
Where is blood moving during the period of ejection? - CORRECT ✔✔Ventricles to great vessels
The adult heart averages ___________ grams. - CORRECT ✔✔250-300
,The epicardium - CORRECT ✔✔covers the surface of the heart.
Energy for contraction of myocardial cells comes primarily from - CORRECT ✔✔aerobic respiration in the
mitochondria
What event(s) occur during the QRS complex of an ECG? - CORRECT ✔✔depolarization of the ventricles
and repolarization of the atria
The relationship between preload and stroke volume is known as - CORRECT ✔✔Starling Law of the
heart.
Cardiac muscle cells - CORRECT ✔✔are maintained by an extensive capillary network.
During the isovolumetric contraction period of the cardiac cycle, - CORRECT ✔✔AV and semilunar valves
are closed.
Pressure in the right ventricle must exceed pressure in the ____ before the right ventricle can eject
blood. - CORRECT ✔✔pulmonary trunk
In the cardiac cycle, - CORRECT ✔✔all four chambers of the heart are in diastole at the same time.
What cardiac arrhythmia will have no QRS complex as a symptom? - CORRECT ✔✔ventricular fibrillation
Which of the following is administered to the people suffering from myocardial infarction following onset
of symptoms? - CORRECT ✔✔Tissue plasminogen activator (t-PA)
Which of the following might increase the risk for cardiovascular disease? - CORRECT ✔✔chronic stress
Aortic stenosis results from - CORRECT ✔✔a narrowed opening through the aortic valve
, An incompetent pulmonary semilunar valve could result in less blood reaching the - CORRECT ✔✔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? - CORRECT
✔✔Angioplasty
Angina pectoris is chest pain caused by reduced - CORRECT ✔✔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 - CORRECT ✔✔infarction
What abnormal heart rhythm could be caused by an elevated body temperature, excessive sympathetic
stimulation, or toxic conditions? - CORRECT ✔✔tachycardia
Which type of vessel has the greatest compliance? - CORRECT ✔✔veins
Which of the following thoracic organs is supplied by a parietal branch of the thoracic aorta? - CORRECT
✔✔the intercostal muscles
Increased pressure in the aortic arch will activate the aortic arch reflex and cause - CORRECT
✔✔increased parasympathetic stimulation of the heart.
According to Poiseuille's law, - CORRECT ✔✔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. - CORRECT ✔✔great; small
If someone has a blood pressure reading of 110/70 mm Hg, their pulse pressure would be - CORRECT
✔✔40 mm Hg.
What is the most important means by which capillary exchange occurs? - CORRECT ✔✔diffusion
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