A&P STRAIGHTERLINE EXAM /FINAL NEWEST EXAM
LATEST 2024/2025 WITH ACTUAL QUESTIONS AND
CORRECT VERIFIED (DETAILED) ANSWERS/ALREADY
GRADED A+
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
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.
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
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