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Biomechanics Test 1: chapters 1, 2, and 6
Terms in this set (61)
safety, efficiency, and effectiveness
What are the underlying concerns of kinesiological analysis?
join bone to bone
Ligaments act to:
Which of the following is NOT a factor in range of motion?
What is the patellar tendon reflex caused by?
The proximal attachment of a muscle is referred to as the:
What is the plane that divides the body into right and left halves?
Which of the following illustrates motion in the frontal plane and around the anterior posterior plane?
arm action in tennis, no spin
Movement that occurs in the horizontal plane, around the ventral axis (longitudinal axis)
intersection of all three cardinal planes
Which of the following defines the center of gravity of the body?
Which type of muscle action is it when the muscle lengthens?
dynamic constant external resistance (DCER)
When you perform 10 reps through a full range of motion doing a dumbbell bicep curl, you are doing an ______________ exercise?
toward the proximal attachment/center
How does a muscle always contract?
force length relationship (this does not exist)
Which of the following is not an important factor in determining muscle contraction?
stepping on a bench
Which of the following illustrates concentric muscle contraction?
What is a muscle that eliminates undesired muscle action called?
supports the body segment against the pull of contracting muscles
What is the function of a stabilizer in muscular performance?
Range of Motion
What are the mechanical advantages of the parallel muscle fiber arrangements?
What type of muscle contraction is employed by the elbow flexors when slowly lowering your backpack on the desk?
During the down (recovery) phase of a standing bicep curl, what role do the triceps play?
A muscle directly involved in causing a segment to move:
straightening the elbow during a push-up since this requires extension, the biceps brachii would be the antagonist since it is opposite of the triceps brachii that is involved in extension
In which of the following activities do biceps brachii function as antagonists?
Which of the following types of strength training are typically associated with soreness?
Dislocating force past 90 degrees you have a dislocating force
During the execution phase of a pull up (when the chin is over the bar) which force is exerted by the biceps brachii when it is greatest at the elbow?
When an opposing force at a joint is greater than the force created by a muscle, what type of contraction occurs in that muscle?
all of the above
Radioulnar joint is a:
Which of the following is the prime mover in elbow extension during the up phase of a pushup?
biceps brachii, brachialis, brachioradialis
Which are the active muscles at the elbow during the down phase of the pull-up?
a pull-up, with the forearm supinated, elbow flexion, biceps brachii is more activated during supinated
In which of the following actions will the biceps brachii be most active?
The biceps brachii is strongest and most effective as an elbow flexor when the forearm is in what position?
To best isolate the brachialis (reduce the effectiveness of the other flexors), perform arm curls with the forearm in what position?
The humeroulnar, humeroradial, and proximal radioulnar joints are the three articulations present at which joint?
flexion and elbow
The movements produced by the long head of the triceps brachii include the glenohumeral:
all of the above: shoulder, elbow, and wrist
Muscles on the anterior side of the arm produce flexion at:
both articulating bone and ligaments
Which of the following factors provides stability at the elbow?
proximal radioulnar joint/ (RU) joint
Pronation and supination of the forearm occur at which of the following joints?
biceps brachii, brachialis, brachioradialis, pronator teres
What are the elbow flexors?
resisted by muscle and eccentric muscle contraction occurs
Movements that occur as the result of an external force are:
If you increase the contribution at one joint, what happens to the contribution at the second joint?
During a concentration curl the pronator teres would be considered a:
During a concentration curl the supinator would be considered a:
affected by supination and pronation
The triceps contribution to to extension at the elbow is NOT:
In reference to elbow flexion, which of the following is (are) not directly affected by supination or pronation?
pronator quadratus. It is only active in pronation
Which of the following does not cause flexion at the elbow?
extend the glenohumeral joint
How would you increase the contribution of the biceps brachii during a seated bicep curl?
biceps brachii, brachialis, and brachioradialis flexion
Which are the active muscles at the elbow during the recovery phase of a narrow grip lat pulldown (where the RU joint is supinated)?
biceps brachii, brachioradialis, and supinator
With resistance, from a pronated position, the supinator(s) of the radial-ulnar joint is (are):
None of the above: pronator teres, pronator quadratus
With resistance, starting from a neutral position, the pronator(s) of the radio-ulnar joint is (are):
Triceps brachii and anconeus
During a barbell shoulder press, the muscle(s) involved in producing movement at the elbow during the execution phase is (are):
flexion, execution, and extension
Tina Triceps is doing a triceps pull down. During the recovery phase the movements of the elbow is ________
more; this is because during the overhead triceps extension, the long head of the triceps is lengthened/stretched so that there is an increased contribution at the second joint
If you are using a rep max weight, an overhead triceps extension is _________ effective than the triceps kickback in strengthening the long head of the triceps.
All of these muscles are utilized: pronator teres, pronator quadratus, biceps brachii and supinator
During a Zottman Curl which of the following muscles are not utilized?
flex the glenohumeral joint
How would you increase the contribution of the brachialis while doing a bicep curl?
none of the above (you can't do anything to produce contribution)
How would you increase the contribution of the medial head of the triceps brachii in producing movement at the glenohumoral?
The movement which occurs during the recovery phase of a push up is caused by a(n):
internal force > external force
During a concentric muscle action:
when the muscle insertion is 90 degrees to the bone
The torque of a muscle (rotary component) is greatest in what position?
muscle is unable to contract enough for full ROM at two joints
Which of the following is true of active insufficiency?
The concentric muscle action: is where force increases as velocity decreases. During an eccentric muscle action: force increases as velocity increases
Due to the Force-Velocity relationship there is a(n):
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