What kind of cells produce the stimulation for cardiac muscle contraction without nervous input?
A) fascial cells
B) myocardial cells
C) pacemaker cells
D) fiber cells
C
Explanation: A) Fascia is the fibrous sheath that holds together muscle fibers.
B) Cardiac muscle is also known as myocardium
C) Correct. Pacemaker cells stimulate contraction without nervous input.
D) Muscles as composed of cells known as fibers.
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