What is a force couple in the context of scapular rotation?

Shoulder Muscles and Functions Assessment

Interactive Video
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Physics
•
11th - 12th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Forces that cancel each other out
Different forces acting from the same point causing rotary motion
Two or more forces acting in the same direction
A single muscle causing rotation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which muscles are involved in the upward rotation of the scapula?
Biceps and triceps
Deltoid and supraspinatus
Levator scapulae, rhomboids, pectoralis minor
Upper trapezius, serratus anterior, lower trapezius
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the rotator cuff contribute to shoulder abduction?
By elevating the humeral head
By depressing and rotating the humeral head
By stabilizing the scapula
By flexing the elbow
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role does the supraspinatus play at the beginning of shoulder abduction?
It provides greater leverage than the deltoid
It stabilizes the scapula
It flexes the elbow
It extends the shoulder
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the movement of the scapula important during shoulder elevation?
It reduces muscle fatigue
It maintains optimal length-tension relationships
It prevents the shoulder from dislocating
It increases the speed of movement
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the peak torque ratio between medial and lateral rotators?
5:4
1:1
3:2
2:1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which muscle group is typically stronger, adductors or abductors?
Neither, they are weak
Both are equally strong
Abductors
Adductors
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