Which of These Statements Describes Twitch Summation

question 25

Multiple Choice

Which of these statements describes twitch summation

• A)It is a means by which weak muscle contraction may be accomplished.
• B)It results from increasing the number of motor units that are firing within a muscle.
• C)A high level of calcium ion is not required.
• D)It results from increasing the frequency at which motor units are firing within a muscle.

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Definitions:

Back

The posterior part of the human body, extending from the neck to the lower spine, supporting movement and bearing the weight of the upper body.

Palmar Reflex

An involuntary movement or grasp of the palms when they are stimulated, commonly seen in newborns.

Child Grasps

The action or capability of a child to physically hold objects or conceptually understand ideas.

Palm

The inner surface of the hand from the wrist to the base of the fingers, or a type of tree known for its long, flexible stems and leafy fronds.