Answer the following questions true (T) or false (F)
1. Type IIx fibers produce the fastest, strongest twitches of any muscle fiber type.
2. Cindy's leg muscles displayed a state of hypotonia since her arm was recently removed from a cast.
3. Both isotonic eccentric contractions and isotonic concentric contractions shorten the muscle.
1. TRUE
2. TRUE
3. FALSE
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Which of the following muscles is considered a "lateral hamstring," based on its insertion?
A) semitendinosis B) biceps femoris C) gracilis D) semimembranosis
In a lab setting, heating a vessel full of reactants will generally
A. lower the activation energy and the kinetic energy of the reactants. B. lower the reaction rate due to the change in structure of the reactants. C. convert products to reactants by increasing the energy requirements. D. increase the kinetic energy of the molecules and increase the reaction rate. E. raise the activation energy and catalyze the reaction.
An example of a receptor in a negative feedback loop controlling body temperature would be
A) temperature sensors on the skin that detect a stimulus. B) sweat glands that increase secretion. C) regulatory centers that send commands to an effector. D) effectors that cause blood vessels to dilate. E) sweat glands that act like effectors.
Solutes that do not dissolve in water are called hydrophilic
Indicate whether the statement is true or false.