RTBC A+ EXAM PREP: LATEST VERSION ENGAGING
QUESTIONS AND ANSWERS (100% ACCURATE)
What determines the quantity of electrons in the tube current?
Heating of the filament
-Heat of the filament produces the space charge effect and the thermionic cloud
-Hotter the filament, the more electrons will boil off
An "apple core" lesion is related to which pathology?
Colon cancer
-"apple core" or "napkin ring" describe the appearance of some types of cancer in the
large intestine
The ability to produce a high voltage electrical current in the x-ray tube is
accomplished through which of the following devices?
Transformers
-Step-up transformer converts low-voltage electricity to high voltage electricity
-Diodes help convert AC to DC
-Resistors control the flow of electricity
What chamber of the heart is responsible for pumping blood to the lungs?
Right ventricle
-Systemic blood returned to the right atrium, passes through the right atrioventricular
(tricuspid) valve, and into right ventricle
-Blood from R ventricle is sent through pulmonary artery and into the lungs where it is
reoxygenated
-Blood from lungs returned to L atrium by way of 4 pulmonary veins, then passes
through the L atrioventricular (mitral) valve and into the L ventricle
-Contraction of the L ventricle sends blood out of the heart through the aorta
QUESTIONS AND ANSWERS (100% ACCURATE)
What determines the quantity of electrons in the tube current?
Heating of the filament
-Heat of the filament produces the space charge effect and the thermionic cloud
-Hotter the filament, the more electrons will boil off
An "apple core" lesion is related to which pathology?
Colon cancer
-"apple core" or "napkin ring" describe the appearance of some types of cancer in the
large intestine
The ability to produce a high voltage electrical current in the x-ray tube is
accomplished through which of the following devices?
Transformers
-Step-up transformer converts low-voltage electricity to high voltage electricity
-Diodes help convert AC to DC
-Resistors control the flow of electricity
What chamber of the heart is responsible for pumping blood to the lungs?
Right ventricle
-Systemic blood returned to the right atrium, passes through the right atrioventricular
(tricuspid) valve, and into right ventricle
-Blood from R ventricle is sent through pulmonary artery and into the lungs where it is
reoxygenated
-Blood from lungs returned to L atrium by way of 4 pulmonary veins, then passes
through the L atrioventricular (mitral) valve and into the L ventricle
-Contraction of the L ventricle sends blood out of the heart through the aorta
