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QUESTION 46 What is muscle activation in which no observable change in muscle length occurs? A....

QUESTION 46

  1. What is muscle activation in which no observable change in muscle length occurs?

    A.

    Isokinetic
    B.

    Isometric
    C.

    Isotonic
    D.

    Concentric
Science   Anatomy-And-Physiology   
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Homework Answers

Answer #1

b) Isometric

Explanation:

Isometric contraction is the one in which the length of the muscle remains constant while tension changes gradually.

Concentric Contractions
A concentric contraction is a type of muscle contraction when the length of the muscles shorten while undergoing tension.

For example, when a person pick up a curl bar and perform a biceps curl, the length of biceps muscles shorten. The hands start down by sides, and ends with hands up by shoulders. The biceps muscles shorten during this motion.

Any muscle activity where the strength of the muscle can overcome the resistance of an object forcing the muscle’s length to shorten, is considered a concentric contraction.

Eccentric Contractions
An eccentric contraction is a type of muscle contraction when the length of the muscle elongates, or lengthens while undergoing tension.

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