Increases in muscle tension in the absence of any shortening of ...

[xroflmao]

Increases in muscle tension in the absence of any shortening of the muscle are said to be
 
  A) contractions.
  B) dynamic.
  C) extensions.
  D) isometric.
  E) synergistic.

Question 2

Bob tried to open a jar of pickles, but the lid did not budge. The muscles of his hands and arms were
 
  A) in isometric contraction.
  B) in dynamic contraction.
  C) locked in a stretch reflex.
  D) in motor pools.
  E) in extension.

[cpetit11]

Answer to Question 1

Answer: D

Answer to Question 2

Answer: A