BIOL 223 - Muscle Exam Review

What type of muscle has the appearance of a feather?

• Convergent

• Fusiform

• Pennate

• Parallel

Which of the following is true of an isometric muscle contraction?

• the length of the muscle increases during the contraction

• it is responsible for rapid movements of the extremities

• the contraction is divided into concentric and eccentric

• the amount of tension increases during the contraction

How are muscle named?

(select all that apply)

• Location

• Action

• Greek name

• Attachment

When a skeletal muscle contracts to cause a given movement, the more movable end of attachment of the muscle is termed its

• origin

• insertion

• antagonist

• synergist

Which of the following would represent incomplete tetanus?

• multiple contractions with slight relaxation between each peak

• multiple contractions followed by a long rest period

• a long rest period before contractions start

• multiple contractions with no relaxation

Of the following muscle types, which type is not branched and has one nucleus per cell?

• skeletal muscle

• cardiac muscle

• smooth muscle

• all of the above

Eccentric muscle contractions occur when

• a person slowly lowers a heavy weight

• no tension is developed in the muscle

• a person rapidly raises a lighter weight

• a length of the muscle decreases

The tissue surrounding an entire muscle is known as

• epimysium

• perimysium

• endomysium

• superficial mysium

The tissue that surrounds a myofiber is known as

• endomysium

• perimysium

• endomysium

• superficial mysium

What must be passed for action potential to occur?

• Threshold

• Repolarization

• Depolarization

• ATP