Name three muscles or muscle groups used as sites for intramuscular injections. Which is most often used in babies?

The prime mover of arm extension is the __________.

A muscle that assists an agonist by causing a like movement or by stabilizing a joint over which an agonist acts is a(n)a. antagonist,b. prime mover,c. synergist,d. agonist.

Multiple ChoiceMore than one choice may apply.Doing the pincer grasp is an________movement.a. extendingb. abductingc. adductingd. opposing

The hamstring and quadriceps muscle groups are antagonists of each other, and each group is a prime mover in its own right. What action does each muscle group perform?

While jogging, Mr. Ahmadi was forced to jump out of the way of a speeding car. He heard a snapping sound that was immediately followed by pain in his right lower calf. A gap was visible between his swollen calf and his heel, and he was unable to plantar flex that foot. What do you think happened?

Why does a convergent muscle exhibit more versatility when contracting than does a parallel muscle?

Why can a pennate muscle generate more tension than can a parallel muscle of the same size?

Why is it difficult to lift a heavy object when the elbow is at full extension?