2
Kinesiology 2 Final Exam 2024-2025.
Questions and Correct Verified Answers.
Graded A
An injury to the long thoracic nerve causes what issues at the scapula? – ANS
Inability for the inferior angle to upwardly rotate
Serratus anterior innervated by long thoracic nerve
Are there concave/convex arthrokinematics of the AC joint? – ANS No.
Does the GH joint require non-bony stabilizers?
What are they? – ANS Yes.
Bony congruency, ligaments, muscles, glenoid labrum (increases surface area that
humeral head can move upon)
Does the joint capsule of the elbow contribute to joint stability? – ANS Very little.
Due to the shape of the articular surfaces of the AC joint, what happens to the
acromion with displacement? – ANS Medial and inferior displacement of the
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acromion under the clavicle; tearing of the trapezoid ligament of the
coracoclavicular ligament.
During ABD, which muscle has a stronger advantage: supraspinatus or deltoid? -
ANSDeltoid due to larger CSA and line of pull. MA is slightly smaller but negated
by CSA and line of pull
During arm ABD, how does the deltoid maintain its strength? - ANSStrength is
maintained by moving attachment points of deltoid away from each other. The
scapula is upwardly rotated to move the attachment on the acromion further
away from the deltoid tuberosity.
As the muscle gets shorter/longer, muscle gets weaker and loses ability to
generate maximal contraction.
During closed chain activities, what is the transmission of force at the elbow? -
ANSForce experienced by the radius distally, then to the ulna via IM, then
humerus proximally
(This is especially true during closed chain activities)
During supination, what muscle is primarily active? - ANSSupinator - biceps brachii
is quiet during low level activities. Biceps will turn on for flexion + supination
activities
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How can the scapula move at the AC joint if they're connected? - ANSThe motion
of the clavicle is induced by the coracoclavicular ligament. The posterior aspect of
the clavicle is pulled anterior due to the CC ligament becoming more taut. As the
scapula upwardly rotates, the attachments of the CC ligaments at the coracoid
process and the posterior side of the clavicle move further apart.
How do biceps and posterior deltoid work together? - ANSExtending the shoulder
preserves the length of the bicep to maintain optimal length for contraction
How do you continue through full ABD in a frontal plane at the shoulder? -
ANSChange positions of the hand to change orientation of the humeral head in
the glenoid fossa
How do you continue through full ABD in a scapular plane at the shoulder? -
ANSER to reposition the greater tubercle
How does a patient with a C6 SCI extend the elbow? - ANSPosition shoulder into
flexion, adduction and flexing the shoulder will put elbow into extension without
utilizing triceps
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How does joint position affect supination strength? - ANSChanging the MA will
decrease the torque; decreases strength
How does the radiocarpal joint stay stable? - ANSSoft tissue - ligaments, joint
capsule
Only about 20% of congruence is bony stability
How many bones are in the wrist and hand? - ANS28 not including ulna; varying
number of seismoid bones
How much of an abduction/adduction glide is present at the ST joint?
What's another name for this motion? - ANS5-10 cm; moving scapula toward or
away from midline
Protraction/retraction. Though pro/retraction is a combination of ABD/ADD and
IR/ER motions
How much of an elevation/depression glide is present at the ST joint? - ANS10 cm;
shrugging motion
How much rotational ROM is seen at the ST joint? - ANSConsistent with AC joint
ROM.
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Kinesiology 2 Final Exam 2024-2025.
Questions and Correct Verified Answers.
Graded A
An injury to the long thoracic nerve causes what issues at the scapula? – ANS
Inability for the inferior angle to upwardly rotate
Serratus anterior innervated by long thoracic nerve
Are there concave/convex arthrokinematics of the AC joint? – ANS No.
Does the GH joint require non-bony stabilizers?
What are they? – ANS Yes.
Bony congruency, ligaments, muscles, glenoid labrum (increases surface area that
humeral head can move upon)
Does the joint capsule of the elbow contribute to joint stability? – ANS Very little.
Due to the shape of the articular surfaces of the AC joint, what happens to the
acromion with displacement? – ANS Medial and inferior displacement of the
P a g e 1 | 36
,2
acromion under the clavicle; tearing of the trapezoid ligament of the
coracoclavicular ligament.
During ABD, which muscle has a stronger advantage: supraspinatus or deltoid? -
ANSDeltoid due to larger CSA and line of pull. MA is slightly smaller but negated
by CSA and line of pull
During arm ABD, how does the deltoid maintain its strength? - ANSStrength is
maintained by moving attachment points of deltoid away from each other. The
scapula is upwardly rotated to move the attachment on the acromion further
away from the deltoid tuberosity.
As the muscle gets shorter/longer, muscle gets weaker and loses ability to
generate maximal contraction.
During closed chain activities, what is the transmission of force at the elbow? -
ANSForce experienced by the radius distally, then to the ulna via IM, then
humerus proximally
(This is especially true during closed chain activities)
During supination, what muscle is primarily active? - ANSSupinator - biceps brachii
is quiet during low level activities. Biceps will turn on for flexion + supination
activities
P a g e 2 | 36
,2
How can the scapula move at the AC joint if they're connected? - ANSThe motion
of the clavicle is induced by the coracoclavicular ligament. The posterior aspect of
the clavicle is pulled anterior due to the CC ligament becoming more taut. As the
scapula upwardly rotates, the attachments of the CC ligaments at the coracoid
process and the posterior side of the clavicle move further apart.
How do biceps and posterior deltoid work together? - ANSExtending the shoulder
preserves the length of the bicep to maintain optimal length for contraction
How do you continue through full ABD in a frontal plane at the shoulder? -
ANSChange positions of the hand to change orientation of the humeral head in
the glenoid fossa
How do you continue through full ABD in a scapular plane at the shoulder? -
ANSER to reposition the greater tubercle
How does a patient with a C6 SCI extend the elbow? - ANSPosition shoulder into
flexion, adduction and flexing the shoulder will put elbow into extension without
utilizing triceps
P a g e 3 | 36
, 2
How does joint position affect supination strength? - ANSChanging the MA will
decrease the torque; decreases strength
How does the radiocarpal joint stay stable? - ANSSoft tissue - ligaments, joint
capsule
Only about 20% of congruence is bony stability
How many bones are in the wrist and hand? - ANS28 not including ulna; varying
number of seismoid bones
How much of an abduction/adduction glide is present at the ST joint?
What's another name for this motion? - ANS5-10 cm; moving scapula toward or
away from midline
Protraction/retraction. Though pro/retraction is a combination of ABD/ADD and
IR/ER motions
How much of an elevation/depression glide is present at the ST joint? - ANS10 cm;
shrugging motion
How much rotational ROM is seen at the ST joint? - ANSConsistent with AC joint
ROM.
P a g e 4 | 36
