Which of the following is an example of an isometric contraction?
A) shaking the head as to say "no"
B) pushing against an immovable wall
C) bending the elbow
D) rotating the arm
E) nodding the head as to say "yes"

Question

Quizplus · Accepted Answer

An isometric contraction occurs when the muscle contracts without changing its length, and pushing against an immovable wall is an example of this type of contraction. Shaking the head, bending the elbow, rotating the arm, and nodding the head involve movement and changes in muscle length, so they are not examples of isometric contractions.

Which of the Following Is an Example of an Isometric