Questão 1
Questão
What are the atria?
Responda
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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
Questão 2
Questão
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])
Responda
-
right atrium
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right ventricle
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pulmonary artery
Questão 3
Questão
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.
Responda
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superior vena cava
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inferior vena cava
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coronary sinus blood
Questão 4
Questão
In the lungs, [blank_start]carbon dioxide[blank_end] is removed from the blood and [blank_start]oxygen[blank_end] is added.
Questão 5
Questão
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.
Responda
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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
Questão 6
Questão
The human heart normally contracts at a rate of about how many beats per minute?
Questão 7
Questão
A pacemaker is located where?
Responda
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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
Questão 8
Questão
A pacemaker has a regular electrical discharge which produces the normal rhythmic contraction of the entire heart, at how many BPM by itself?
Questão 9
Questão
Ventricular contraction begins:
Responda
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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
Questão 10
Questão
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].
Responda
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systole
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diastole
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diastole
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systole
Questão 11
Questão
Which is the transmitter for the parasympathetic system?
Responda
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Acetylcholine
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Norepinephrine
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Baroreceptors
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Vagus
Questão 12
Questão
What is the transmitter for the sympathetic system?
Responda
-
Acetylcholine
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Nerepinephrine
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Baroreceptor
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Vagus
Questão 13
Questão
Vagal inhibition of the SA node normally increases HR
Questão 14
Questão
Vagal withdrawal may increase HR
Questão 15
Questão
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.
Responda
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increases
-
decreases
-
increase
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decrease
-
increased
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decreased
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increase
-
decrease
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increase
-
decrease
Questão 16
Questão
Baroreceptors are located in the carotid sinus in the neck.
Questão 17
Questão
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).
Responda
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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
Questão 18
Questão
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]
Responda
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arrhythmia
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sympathetic
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sinoatrial node
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breathing
Questão 19
Questão
R-R interval is [blank_start]shortened[blank_end] during inspiration and [blank_start]prolonged[blank_end] during expiration.
Responda
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shortened
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lengthened
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prolonged
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reduced
Questão 20
Questão
The relatively small ______ wave is produced by electrical currents generated just before contraction of the atria.
Questão 21
Questão
The R wave is the most prominent component of the QRS component.
Questão 22
Questão
The T wave is caused by re-polarisation of the?
Responda
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Ventricles
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Atrium
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Aorta
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Carotid sinus
Questão 23
Questão
Lead 1 is placed:
Responda
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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
Questão 24
Questão
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.
Responda
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positive
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negative
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upward
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downward
Questão 25
Questão
Lead II is attached to:
Responda
-
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
Questão 26
Questão
Lead III is attached to:
Responda
-
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
Questão 27
Questão
How many chest electrodes are there?
Questão 28
Questão
The frequency of RSA has a range of:
Responda
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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
Questão 29
Questão
RSA is considered a marker for vagal control.
Questão 30
Questão
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
Responda
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increase
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decrease
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cognitive
-
perceptual
Questão 31
Questão
Cardiac deceleration facilitates stimulus “rejection” whereas cardiac acceleration facilitates stimulus “intake”.