Pregunta 1
Pregunta
What are the atria?
Respuesta
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Receiving chambers for blood that has been returned to the heart by the veins
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The part of the heart which recieves blood from all body tissues except the lungs
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They pump blood via arteries to the lungs
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They are sections of the heart which carry oxygenated blood
Pregunta 2
Pregunta
The blood flows from the [blank_start]right atrium[blank_end] to the [blank_start]right ventricle[blank_end] and from there to the lungs (via the [blank_start]pulmonary artery[blank_end])
Respuesta
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right atrium
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right ventricle
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pulmonary artery
Pregunta 3
Pregunta
The [blank_start]superior vena cava[blank_end] (from from the upper body), the [blank_start]inferior vena cava[blank_end] (blood from the lower body) and the [blank_start]coronary sinus blood[blank_end] (blood from the heart itself) are the veins that bring blood to the right atrium.
Respuesta
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superior vena cava
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inferior vena cava
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coronary sinus blood
Pregunta 4
Pregunta
In the lungs, [blank_start]carbon dioxide[blank_end] is removed from the blood and [blank_start]oxygen[blank_end] is added.
Pregunta 5
Pregunta
Oxygenated blood is returned to the [blank_start]left atrium[blank_end] by four [blank_start]pulmonary veins[blank_end], and from there it goes to the [blank_start]left ventricle[blank_end] ([blank_start]valve[blank_end] stops return), which then pumps the oxygenated blood through the [blank_start]aorta[blank_end] to the rest of the body.
Respuesta
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left atrium
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pulmonary veins
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left ventricle
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valve
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aorta
Pregunta 6
Pregunta
The human heart normally contracts at a rate of about how many beats per minute?
Pregunta 7
Pregunta
A pacemaker is located where?
Respuesta
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Rear wall of right atrium
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Rear wall of left atrium
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Rear wall of right ventricle
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Rear wall of left ventricle
Pregunta 8
Pregunta
A pacemaker has a regular electrical discharge which produces the normal rhythmic contraction of the entire heart, at how many BPM by itself?
Pregunta 9
Pregunta
Ventricular contraction begins:
Respuesta
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Shortly after Q wave
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Shortly after R wave
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Just before the Q wave
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Just before the R wave
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Shortly after the S wave
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Just before the S wave
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Shortly after the T wave
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Just before the T wave
Pregunta 10
Pregunta
The contraction phase of the heart is known as [blank_start]systole[blank_end], whereas the relaxation phase is termed [blank_start]diastole[blank_end].
Respuesta
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systole
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diastole
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diastole
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systole
Pregunta 11
Pregunta
Which is the transmitter for the parasympathetic system?
Respuesta
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Acetylcholine
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Norepinephrine
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Baroreceptors
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Vagus
Pregunta 12
Pregunta
What is the transmitter for the sympathetic system?
Respuesta
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Acetylcholine
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Nerepinephrine
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Baroreceptor
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Vagus
Pregunta 13
Pregunta
Vagal inhibition of the SA node normally increases HR
Pregunta 14
Pregunta
Vagal withdrawal may increase HR
Pregunta 15
Pregunta
HR output [blank_start]increases[blank_end] via the [blank_start]increase[blank_end] in rate of S-A node discharge, the [blank_start]increased[blank_end] in excitability of cardiac tissue, and the [blank_start]increase[blank_end] in contraction force (atrial & ventricular). The SNS also acts to [blank_start]increase[blank_end] cardiac output in certain emotional situations or at extreme levels of exercise.
Respuesta
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increases
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decreases
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increase
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decrease
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increased
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decreased
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increase
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decrease
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increase
-
decrease
Pregunta 16
Pregunta
Baroreceptors are located in the carotid sinus in the neck.
Pregunta 17
Pregunta
When pressure on the walls of the [blank_start]carotid sinus[blank_end] is low because of [blank_start]decreased[blank_end] blood pressure, this information is transmitted to a cardiac [blank_start]acceleration[blank_end] center in the [blank_start]medulla[blank_end]. SNS [blank_start]increases[blank_end] cardiac output in response are present in the carotid sinus ([blank_start]cardiac output[blank_end] refers to the amount of blood pumped by the heart).
Respuesta
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carotid sinus
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decreased
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increased
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acceleration
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deceleration
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medulla
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increases
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decreases
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cardiac output
Pregunta 18
Pregunta
RSA is the natural cycle of [blank_start]arrhythmia[blank_end] that occurs through the influence of [blank_start]breathing[blank_end] on the flow of [blank_start]sympathetic[blank_end] and vagal impulses to the [blank_start]sinoatrial node[blank_end]
Respuesta
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arrhythmia
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sympathetic
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sinoatrial node
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breathing
Pregunta 19
Pregunta
R-R interval is [blank_start]shortened[blank_end] during inspiration and [blank_start]prolonged[blank_end] during expiration.
Respuesta
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shortened
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lengthened
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prolonged
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reduced
Pregunta 20
Pregunta
The relatively small ______ wave is produced by electrical currents generated just before contraction of the atria.
Pregunta 21
Pregunta
The R wave is the most prominent component of the QRS component.
Pregunta 22
Pregunta
The T wave is caused by re-polarisation of the?
Respuesta
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Ventricles
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Atrium
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Aorta
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Carotid sinus
Pregunta 23
Pregunta
Lead 1 is placed:
Respuesta
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Right arm, left arm
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Right arm, left leg
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Left arm, left leg
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Left arm, right leg
Pregunta 24
Pregunta
For lead 1, The polarity is selected so that when the left arm lead is [blank_start]positive[blank_end], with respect to the right, there is an [blank_start]upward[blank_end] deflection of the P and R segments
of the ECG.
Respuesta
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positive
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negative
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upward
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downward
Pregunta 25
Pregunta
Lead II is attached to:
Respuesta
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Right arm, left arm
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Right arm, left leg
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Left arm, Left leg
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Its just not attached
Pregunta 26
Pregunta
Lead III is attached to:
Respuesta
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Right arm, left arm
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Right arm, left leg
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Left arm, left leg
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There is no lead III
Pregunta 27
Pregunta
How many chest electrodes are there?
Pregunta 28
Pregunta
The frequency of RSA has a range of:
Respuesta
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0.15-0.4 Hz
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0.4-0.6 Hz
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0.25-0.5 Hz
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None of the above
Pregunta 29
Pregunta
RSA is considered a marker for vagal control.
Pregunta 30
Pregunta
In [blank_start]cognitive[blank_end] activities, HR [blank_start]increase[blank_end] and SCL increase; in [blank_start]perceptual[blank_end] activities, HR [blank_start]decrease[blank_end] and SCL increase
Respuesta
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increase
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decrease
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cognitive
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perceptual
Pregunta 31
Pregunta
Cardiac deceleration facilitates stimulus “rejection” whereas cardiac acceleration facilitates stimulus “intake”.