01-20-2012, 01:43 PM
The functional properties of isolated strips of skeletal and smooth muscle were compared in an experimental setting in vitro. Each muscle sample was stimulated electrically and caused to contract. When comparing muscle mechanics, which one of the following statements comparing smooth muscle to skeletal muscle is correct?
A. Duration of contraction was longer in smooth muscle
B. For equal total loads, oxygen consumption was greater in smooth muscle
C. Force generation over a smaller range of preloads was observed in smooth muscle
D. Force of contraction per unit cross-sectional area is smaller in smooth muscle
E. Initial velocity of shortening with the same total load is faster in smooth muscle
A. Duration of contraction was longer in smooth muscle
B. For equal total loads, oxygen consumption was greater in smooth muscle
C. Force generation over a smaller range of preloads was observed in smooth muscle
D. Force of contraction per unit cross-sectional area is smaller in smooth muscle
E. Initial velocity of shortening with the same total load is faster in smooth muscle