Deck 12: Types of Muscle Contractions

Question 1

When a muscle contracts it:

A)always shortens its overall length
B)lengthens towards the attachment sites
C)stays the same length at all times
D)attempts to shorten toward its center

Answer 1

attempts to shorten toward its center

Question 2

When a person is doing a biceps curl,during the downward movement the biceps brachii is doing what type of contraction at the elbow joint?

A)eccentric
B)isometric
C)stabilization
D)concentric

Answer 2

eccentric

Question 3

When a muscle contracts and shortens this is defined as:

A)a concentric contraction
B)an eccentric contraction
C)resistance
D)stabilization

Answer 3

a concentric contraction

Question 4

An eccentric contraction is characterized by the muscle:

A)shortening
B)lengthening
C)staying the same length
D)sometimes shortening and sometimes lengthening

Question 5

When a person is doing a push-up,during the downward movement the triceps brachii is doing what type of contraction at the elbow joint?

A)eccentric
B)isometric
C)stabilization
D)concentric

Question 6

If a person is holding his or her arm in a position of 90 degrees of abduction of the arm at the shoulder joint,what type of contraction is occurring?

A)shortening
B)isometric
C)concentric
D)lengthening

Question 7

If the force of the muscle's contraction is less than the resistance force,what type of contraction occurs?

A)isometric
B)stabilization
C)eccentric
D)concentric

Question 8

A muscle is defined as contracting when it:

A)shortens
B)forms myosin-actin cross-bridges
C)lengthens
D)stays the same length

Question 9

When a person is doing a push-up,during the upward movement the triceps brachii is doing what type of contraction at the elbow joint?

A)eccentric
B)isometric
C)stabilization
D)concentric

Question 10

When a person is doing a biceps curl,during the upward movement the biceps brachii is doing what type of contraction at the elbow joint?

A)eccentric
B)isometric
C)stabilization
D)concentric

Question 11

If a muscle contracts and lengthens,what type of contraction occurs?

A)stabilization
B)eccentric
C)concentric
D)isometric

Question 12

An isometric contraction is characterized by the muscle:

A)shortening
B)lengthening
C)staying the same length
D)sometimes shortening and sometimes lengthening

Question 13

The term tension is defined as what type of force?

A)expanding
B)pushing
C)pulling
D)contracting

Question 14

If the force of a muscle's contraction is greater than the resistance force,what type of contraction occurs?

A)isometric
B)stabilization
C)eccentric
D)concentric

Question 15

If the force of a muscle's contraction is equal to the resistance force,what type of contraction occurs?

A)concentric
B)lengthening
C)isometric
D)eccentric

Question 16

A concentric contraction is characterized by the muscle:

A)shortening
B)lengthening
C)staying the same length
D)sometimes shortening and sometimes lengthening

Question 17

What is the term for a muscle that contracts and shortens?

A)fixator
B)antagonist
C)stabilizer
D)mover

Question 18

When a person lifts his or her leg to reach the next step on a staircase,the iliopsoas is doing what type of contraction at the hip joint?

A)eccentric
B)isometric
C)stabilization
D)concentric

Question 19

Relative to the mover force,what is the resistance force?

A)synergistic
B)antagonistic
C)supporting
D)neutralizing

Question 20

The weight of the forearm when the brachialis muscle contracts is what type of force?

A)compliance
B)resistance
C)synergist
D)fixation

Question 21

Which of the following terms means toward the center?

A)stabilization
B)isometric
C)concentric
D)eccentric

Question 22

Gravity is a force that:

A)pulls upward
B)pushes downward
C)pulls downward
D)pushes upward

Question 23

A concentric contraction has what effect on movement?

A)stops it
B)creates it
C)modifies it
D)decreases it

Question 24

When an isometric muscle contraction occurs,which of the following usually happens?

A)A body part is fixed.
B)A body part is stabilized.
C)Joint motion is stopped.
D)All of these are correct.

Question 25

What type of contraction causes the attachments of a muscle to move farther apart?

A)shortening
B)lengthening
C)same length
D)stabilization

Question 26

Which of the following characterizes internal and external forces?

A)Gravity is an internal force;muscle contraction is an external force.
B)Muscle contraction is an internal force;gravity is an external force.
C)Gravity and muscle contraction are both internal forces.
D)Gravity and muscle contraction are both external forces.

Question 27

What type of contraction brings the attachments of a muscle closer together?

A)lengthening
B)shortening
C)isometric
D)same length

Question 28

Gravity neutral motions usually occur in what plane?

A)sagittal
B)frontal
C)transverse
D)oblique

Question 29

What type of contraction causes the attachments of a muscle to move farther apart?

A)concentric
B)eccentric
C)isometric
D)stabilization

Question 30

An eccentric contraction has what effect on movement?

A)stops it
B)creates it
C)modifies it
D)increases it

Question 31

The usual purpose of an eccentric muscle contraction force is to do which of the following?

A)speed up the mover force
B)slow down the mover force
C)increase speed of body movement
D)none of these choices

Question 32

The usual purpose of an isometric muscle contraction force is to do what to joint motion?

A)speed it up
B)slow it down
C)stop it
D)initiate it

Question 33

Which of the following terms means away from the center?

A)contraction
B)isometric
C)concentric
D)eccentric

Question 34

When myosin-actin cross-bridges form,the cross-bridges:

A)bend,causing shortening of the sarcomere
B)stay stationary and linear
C)attempt to bend,attempting to shorten the sarcomere
D)lengthen,causing a lengthening of the sarcomere

Question 35

An isometric contraction has what effect on movement?

A)stops it
B)creates it
C)modifies it
D)increases it.

Question 36

Generally,what type of contraction occurs to guide the downward movement of a body part due to gravity?

A)concentric
B)eccentric
C)isometric
D)same length

Question 37

What type of contraction brings the attachments of a muscle closer together?

A)isometric
B)eccentric
C)concentric
D)negative

Question 38

Physically,the more mobile muscle attachment is usually:

A)lighter and distal
B)lighter and proximal
C)heavier and distal
D)heavier and proximal

Question 39

The term negative contraction is a synonym for a(n):

A)concentric contraction
B)resistive force
C)eccentric contraction
D)isolated movement

Question 40

Generally,what type of contraction occurs when a body part is lifted upward?

A)concentric
B)eccentric
C)isometric
D)same length

Question 41

Which of the following word origins means away from?

A)ek
B)epi
C)ante
D)sub

Question 42

What type of muscle contraction is usually involved with stabilization?

A)concentric
B)eccentric
C)isometric
D)negative

Question 43

Which of the following word origins means measure?

A)tensio
B)metrikos
C)fixus
D)tonus

Question 44

What type of muscle contraction is usually involved with stabilization?

A)concentric
B)eccentric
C)shortening
D)isometric

Question 45

Which of the following word origins means equal?

A)isos
B)uni
C)ante
D)con

Question 46

Which of the following word origins means a fight?

A)anti
B)tensio
C)fix
D)agon

Question 47

Which of the following word origins means fastened?

A)anti
B)fixed
C)tone
D)metric

Question 48

Which of the following word origins means to stretch?

A)stabilis
B)centrum
C)tensio
D)agon