Intercalated discs in the myocardium perform a very important function. Which of the following describes that function?
a. Absolute refractory period
b. Automaticity
c. Contractility
d. Electrical conduction
ANS: D
Cardiac fibers are separated by irregular transverse thickenings of the sarcolemma called interca-lated discs. These discs provide structural support and aid in electrical conduction between fi-bers.
Health Professions
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1. motion is controlled. 2. a large focal spot is used. 3. a small IR is used for computed radiography images. 4. a large OID is used. a. 1 and 3 only b. 2 and 4 only c. 1, 3, and 4 only d. 1, 2, 3, and 4
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End users interact with a database through graphical user interfaces, not query languages.
Answer the following statement true (T) or false (F)
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