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SCIN 132 SCIN132 QUIZ 6 ANSWERS (AMERICAN PUBLIC UNIVERSITY)

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Sickle cell disease is caused by
Which of the following blood cells can develop into "wandering macrophages”?
The first phagocytotic cells at the site of a bacterial invasion are
Leukocytes can be divided into three major groups.
The thin layer of white blood cells and platelets in centrifuged blood is called
Which of the following breakdown products from hemoglobin can be reused by other cells for
The only important RBC antigens that need to be considered in human blood transfusions arethe ABO group antigens
The valve between the left atrium and left ventricle is the
Blood transported by the pulmonary veins returns to the
Atrial repolarization is indicated by the
The blood vessel that carries blood highest in oxygen is the
The muscular wall of the left ventricle is thicker than the right wall because it
Death of an area of cardiac tissue due to an interrupted blood supply is called
The blood supply to the myocardial wall of the heart is supplied by the
Which of the following represents the correct sequence of structures in the cardiac conductionsystem?
Blood flow from the right ventricle to the lungs and back to the left atrium is called
Filtration of fluids and solutes out of capillaries into the interstitial fluid is driven by capillaryblood pressure and opposed by
Bradycardia indicates a rapid heart rate.
Venous return to the heart occurs due to pressure created by
Which of the following are involved in the regulation of blood pressure?
Atrial natriuretic peptide
Blood pressure is highest in the
Which of the following will cause a decrease in heart rate?
Skeletal muscle is capable of which of the following?
When multiple stimuli were applied at 20 stimuli/sec in the simulation, _______.
What happens during Phase 3 of cardiac muscle depolarization?
Excessive vagal stimulation of the heart will result in _______.
In the simulation, when vagus nerve stimulation was applied to the frog heart, _______.
In the simulation, delivering single shocks in succession to stimulate the frog heart _______.
Briefly explain how the sympathetic and parasympathetic nervous systems work together to regulate
Briefly explain why wave summation and tetany would be deadly in cardiac muscle.
The average life span of red blood cells is
Worn-out red blood cells are phagocytized in the
The first phagocytotic cells at the site of a bacterial invasion are
Sickle cell disease is caused by
Leukocytes can be divided into three major groups.
Which of the following is an agranular leukocyte?
An increase in the number of white blood cells is called
Cardiac muscle fibers are connected with each other by
The layer of simple squamous epithelium that lines the inside of the myocardium is called
The muscular wall of the left ventricle is thicker than the right wall because it
The portion of the heart that consists of cardiac muscle tissue is the
The valve between the left atrium and left ventricle is the
The normal pacemaker of the heart is/are the
The P wave of an ECG indicates
The blood supply to the myocardial wall of the heart is supplied by the
Venous return to the heart occurs due to pressure created by
The smallest diameter blood vessels are
Filtration of fluids and solutes out of capillaries into the interstitial fluid is driven by capillary blood pressure and opposed by
Coronary artery disease is the leading cause of heart disease and death in older Americans.
Systolic pressure is the pressure in the arteries when the ventricles are contracting, while diastolic pressure is the pressure in blood vessels when the ventricles are relaxed.
Within the cardiovascular system, blood only flows from regions of higher pressure to regions of lower pressure.
Which of the following are involved in the regulation of blood pressure?
Which of the following types of muscle are capable of autorhythmicity?
The effect of vagus nerve stimulation on the heart is to _______.
The effect of the parasympathetic nervous system on the heart is to _______.
The effect of the sympathetic nervous system on the heart is to _______.
Skeletal muscle is capable of which of the following?
The total refractory period of cardiac muscle _______.
In the simulation, delivering single shocks in succession to stimulate the frog heart _______.
A premature contraction of the heart, resulting in momentary interruption of the normal heartbeat.
Briefly explain why wave summation and tetany would be deadly in cardiac muscle.

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