Vaccines, testing, medical instruments,
and vitamins Section Questions &
Answers
Subcutaneous injection gauge - ANSWERS23-25 gauge, 5/8" needle
Intramuscular injection gauge - ANSWERS22-25 gauge needle, 1" to 1.5" needle (only
use 5/8" needle if patient is less than 130 pounds)
Webber test - ANSWERSTunning fork on midline of skull, pt idenities sound that is
loudest. normal hearing sound is heard equally, sound louder in ear with hearing loss,
softer in ear with sensorineural hearing loss.
Rinne test - ANSWERShearing test using a tuning fork; checks for differences in bone
conduction and air conduction
Snellen chart - ANSWERSused to measure visual acuity
50/20 vision - ANSWERSBelow average: what patient sees letter at 20 ft is what normal
population sees at 50 ft
Ishihara test - ANSWERStests for color vision
scratch test - ANSWERStype of allergy testing in which body is exposed to allergens
through a light scratch in skin
Fat soluble vitamins - ANSWERSA, D, E, K
SA node - ANSWERSpacemaker of the heart
AV node - ANSWERSrelays electrical impulses from atria into ventricles
Purkinje fibers - ANSWERSfibers in the ventricles that transmit impulses to the right and
left ventricles, causing them to contract