Question 1

Which of the following is NOT true of a concentric contraction?

Accepted Answer

A)  Muscle attachments move closer together. 
B)  This type of contraction produces less of a force than an eccentric contraction. 
C)  Movement occurs against gravity. 
D)  A concentric contraction is an acceleration activity. B

Question 2

The deltoid muscle can effectively contract through its entire ROM because of the upward rotation of the scapula,which serves to maintain tension in the deltoid muscle.If the deltoid loses tension,it becomes

Accepted Answer

A)  passively insufficient. 
B)  actively insufficient. 
C)  noncontractile. 
D)  None of the above B

Question 3

A contraction that causes no joint movement while producing muscle fiber tension is

Accepted Answer

A)  ISOK. 
B)  ISOT. 
C)  ISOM. 
D)  eccentric. C

Question 4

The type of muscle contraction that occurs with fixed speed,fixed resistance,and no joint motion is

Accepted Answer

A)  ISOK. 
B)  ISOM. 
C)  ISOT. 
D)  tenodesis.

Question 5

The ability of a muscle to respond to a stimulus is referred to as which of the following?

Accepted Answer

A)  Irritability 
B)  Contractility 
C)  Extensibility 
D)  Elasticity

Question 6

The majority of lower extremity functional activity occurs in a closed chain manner.

Accepted Answer

A) True 
 B)False

Question 7

You can make a tighter fist with your wrist extended than with your wrist flexed because of

Accepted Answer

A)  active insufficiency of the finger flexors. 
B)  active insufficiency of the finger extensors. 
C)  passive insufficiency of the finger flexors. 
D)  passive insufficiency of the finger extensors.

Question 8

Which of the following is a true statement regarding oblique muscle fibers?

Accepted Answer

A)  Oblique muscle fibers tend to be longer than parallel fibers,thus having more strength potential than parallel fibers. 
B)  Oblique muscle fibers tend to be longer than parallel fibers,thus having less strength potential than parallel fibers. 
C)  Oblique muscle fibers tend to be shorter than parallel fibers,thus having more strength potential than parallel fibers. 
D)  Oblique muscle fibers tend to be shorter than parallel fibers,thus having less strength potential than parallel fibers.

Question 9

The ability of a muscle to recoil or return to normal resting length after a stretching or shortening force is removed is called

Accepted Answer

A)  irritability. 
B)  contractility. 
C)  elasticity. 
D)  extensibility.

Question 10

Which of the following is NOT true of an eccentric contraction?

Accepted Answer

A)  Contraction produces a greater force than a concentric contraction. 
B)  Contraction is used as an acceleration activity. 
C)  Muscle attachments move farther apart. 
D)  Movement occurs with gravity.

Question 11

If a person threw a Frisbee and wanted wrist radial deviation,which muscle group would be the antagonist?

Accepted Answer

A)  Wrist radial deviators 
B)  Wrist ulnar deviators 
C)  Wrist flexors 
D)  Wrist extensors

Question 12

What is the term for a muscle contraction in which the proximal end moves toward the distal end?

Accepted Answer

A)  Irritability 
B)  Extensibility 
C)  Reversal of muscle action 
D)  Active insufficiency

Exam 5: Muscular System