often injured when thé shoulder uisolail A. Identify the nerve. CXilleu mne nkin
ID: 3514776 • Letter: O
Question
often injured when thé shoulder uisolail A. Identify the nerve. CXilleu mne nking ulder cess. dr B. Describe the sensory area innervated by this on 12. Analyze the activity of shoulder abduction nking side nerve. performed while standing, starting in the anatomical position. A. The starting range of motion is and the ending range of motion is B. What is the "axis" of the motion? C. Is the movement with or against gravity? D. Is l side the muscle producing the force for movement mu) or the resistance to the movement? E. Is gravity producing the force for the movement or the resistance to the movement? F. Which major muscle group is the along agonist? le G. Is the agonist acting to overcome gravity or to H. Is the agonist performing a concentric or an I. Is this an open- or closed-kinetic chain J. What class lever is this exercise? slow down gravity? n the eres or eccentric contraction? activity? ally, the K. Identify and arrange the axis,rsistanece, and force in the proper order.ce,Explanation / Answer
A) The movement starts from anatomical position in completely adducted state and goes to 90 degree abduction and further to overhead 180 degree abduction.
B) The movement occurs in sagittal axis- frontal plane.
C) The movement is against gravity since arm moves upwards (against the direction of force of gravity)
D) Since the movement is against gravity, the muscles responsible produce force for movement.
E) Since the movement is against gravity, the force of gravity produces resistance to movement.
F) Responsible muscles are - Biceps brachii, deltoid and supraspinatus.
In overhead abduction, arm is rotated laterally for 90 degree and trapezius also plays a role.
G) since the movement is against gravity, the agonist try to overcome gravity.
A bell shaped curve will be obtained if thr entire range of movement is plotted against force required by agonists.
H) The agonists perform a concentric contraction.
I) Since the hand is free, this is an open kinetic chain activity.
J) This is class 3 lever exercise since force lies between fulcrum and resistance.
K) The axis is located at the location where humerus and scapula meet.
The force is exerted on the point of attachment of muscles. A bit distal to the axis.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.