Biomechanics Quiz Questions Muscular Contractions.txt

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Which of the following is the definition of a concentric muscle contraction?

when a muscle is active and its attachment draw closer together
Which of the following is the definition of an eccentric muscle contraction?

when a muscle is active and its attachments are drawn further apart
Which of the following is the definition of an isometric muscle contraction?

when a muscle is active and its attachments do not move relative to each other
Muscles that create joint torques that causes a joint to rotate are functioning in the ______ role?

agonist
Muscles that create joint torques that oppose the joint rotation are functioning in the ______ role?

antagonist
Muscles that create opposing joint torques in order to keep a joint from rotating are functioning in the _______ role?

stabilizer
Muscles that create joint torques that eliminate an undesired joint rotation caused by the agonist muscles are functioning in the ______ role?

neutralizer
Which of the following muscle is an antagonist to the actions of biceps femoris?
quadriceps
- -rectus femoris
- -vastus lateralis
- -vastus medialis
- -vastus intermedius
According to the muscle force-length relationship, the ability to generate muscle tension is greatest when a muscle is stretch to which of the following conditions?

120% of resting length
According to the muscle force-velocity relationship, which type of muscle contraction creates the largest muscle forces?

eccentric muscle contraction
"A muscle in which the muscle fibers and the line of pull of the muscle are in the same direction" is the definition of which of the following type of muscles?

longitudindal
To propel yourself into the air for a vertical jump, what kind of muscle contraction is used at the hip to speed the body up?

eccentric hip extension
When landing after a vertical jump, what kind of muscle contraction is used at the knee to slow the body down?

eccentric knee flexion
When you are running, which of the following muscular contraction(s) can be used to speed you up?

at the ankle:

-concentric ankle plantar flexion

at the knee:

-concentric knee extension

at the hip:

-concentric hip extension
When riding a bicycle, which of the following muscular contraction(s) can be used to speed the bicycle up?

at the ankle:

-concentric plantar flexion during push down

-concentric dorsiflexion during pull up

at the knee:

-concentric knee extension during push down

-concentric knee flexion during pull up

at the hip:

-concentric hip extension during push down

-concentric hip flexion during pull up
When you are performing the front crawl swimming technique, which of the following muscular contraction(s) can be used to speed you up?

- concentric shoulder adduction

- concentric elbow extension

- concentric wrist flexion

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Biomechanics Quiz Questions Muscular Contractions.txt

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2013-11-24T07:05:17Z

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