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Chapter 5 Shoulder Joint
Kinesiology muscles and movements of shoulder joint
52
Anatomy
Not Applicable
06/19/2021

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Cards

Term
Where does the shoulder joint attach to the axial skeleton?
Definition
at the clavicle and SC joint.
Term
Movement of the scapula USUALLY occurs with movement of what?
Definition
The Humerus
Term
For humeral flexion and abduction to take place, what movements must occur by the scapula?
Definition
elevation, rotation upward, and abduction
Term
Humeral adduction and extension results in which movements by the scapula?
Definition
Depression, rotation downward, adduction, and horizontal abduction
Term
The wide range of motion of the shoulder joint causes the joint to be more or less stable?
Definition
Less
Term
Shoulder joint muscles have origins where?
Definition
On the scapula and clavicle
Term
Where are the insertions for the shoulder joint located?
Definition
Humeral landmarks?
Term
What is the technical name for the shoulder joint?
Definition
Glenohumeral Joint
Term
The glenohumeral joint is classified as which kind of joint?
Definition
Ball and socket
Term
True or false, glenohumeral ligaments are lax except when extreme ROM is reached
Definition
True
Term
Which is a more common injury to the glenohumeral joint?
Anterior/anteriorinferior dislocation/sublaxation, or posterior dislocation?
Definition
Anterior and anteriorinferior injuries are much more common to this joint than posterior dislocation.
Term
What muscles part of the rotator cuff?
Definition
Subscapularis, supraspinatus, infraspinatus, and teres minor
Term
Intrinsic muscles of the shoulder joint
Definition
Deltoid, coracobrachialis, teres major, subscapularis Supraspinatus, infraspinatus, and teres minor
Term
Where do the intrinsic muscles of the glenohumeral joint originate?
Definition
The scapula and clavicle
Term
The extrensic muscles of the glenohumeral joint include
Definition
Pectoralis major and latissimus dorsi
Term
Name all of the muscles of the shoulder joint
Definition
1.Deltoid,
2.coracobrachialis
3.pectoralis major
4.subscapularis
5.supraspinatus
6.infraspinatus,
7.teres minor
8. teres major
9. latissimus dorsi
Term
All shoulder joint muscles are innervated by which plexus?
Definition
The brachial plexus
Term
Lateral pectoral nerve (C5,6,&7) innervates which muscle(s)?
Definition
Pectoralis major (clavicular head)
Term
Medial pectoral nerve (c8&T1) innervates which muscle(s)?
Definition
Pectoralis major (sternal head)
Term
Thoracodorsal nerve (C6-C8) innervates which muscle(s)?
Definition
Latissimus Dorsi
Term
Axillary nerve (C5&C6)innervates which muscle(s)?
Definition
Deltoid, teres minor, and sensation to lateral patch of skin on deltoid
Term
Upper subscapular nerve (C5&C6) innervates which muscle(s)?
Definition
Subscapularis
Term
Lower subscapular nerve (C5 and C6) innervates which muscle(s)
Definition
Subscapularis and teres major
Term
Suprascapular nerve (C5 and c6)innervates which muscle(s)?
Definition
Supraspinatus and infraspinatus
Term
Musculotaneous nerve (C5-C7) innervates which muscle(s)
Definition
Coracobrachialis, sensation to radial aspect of forearm
Term
Actions of Deltoid anterior fibers
Definition
Abduction, flexion, horizontal adduction, and internal rotation
Term
Actions of Deltoid middle fibers
Definition
Abduction
Term
Actions of Deltoid posterior fibers
Definition
Abduction, extension, horizontal abduction, external rotation
Term
Actions of pectoralis major (all fibers)
Definition
Adduction, internal rotation, assist to elevate thorax for forced inhalation
Term
Actions of pectoralis major upper fibers (clavicular head)
Definition
Flexion and horizontal adduction
Term
Actions of pectoralis major lower fibers (sternal head)
Definition
Extension
Term
Actions of latissimus dorsi
Definition
Adduction, extension, internal rotation
Term
Actions of teres major
Definition
Extension, internal rotation, adduction
Term
Actions of Coracobrachialis
Definition
Flexion, adduction, and horizontal adduction
Term
Supraspinatus inserts
Definition
from above on the GT
Term
Infraspinatus inserts
Definition
posteriorly on the GT
Term
Teres minor inserts
Definition
Posteriorly on the GT
Term
Subscapularis inserts
Definition
anteriorly on the LT
Term
Which group of muscles are vital in maintaining the position of the humeral head within the glenoid fossa?
Definition
Rotator cuff muscles
Term
Actions of the supraspinatus
Definition
Abduction, stabilization of humeral head
Term
Which is the only rotator cuff muscle that does not rotate the humerus
Definition
Supraspinatus
Term
Actions of the infraspinatus
Definition
External rotation, adduction, stabilizes humeral head
Term
Actions of teres minor
Definition
External rotation, adduction, stabilization of humeral head
Term
Actions of thesubscapularis
Definition
Internal rotation, stabilization of humeral head
Term
Agonists for glenohumeral flexion
Definition
Anterior deltoid
Upper pectoralis major
Coracobrachialis, biceps brachii
Term
Agonists for genohumeral extension
Definition
Latissimus dorsi
Teres major
lower pectoralis major
Posterior deltoid
Triceps Brachii
Term
Agonists for glenohumeral abduction
Definition
Deltoid
Supraspinatus
Term
Agonists for glenohumeral adduction
Definition
Latissimus dorsi
Teres Major
Lower pectoralis major
coracobrachialis
Triceps brachii
Term
Agonists for glenohumeral internal rotation
Definition
Latissimus Dorsi
Teres Major
Subscapularis
Anterior deltoid
Pectoralis Major
Term
Agonists for glenohumeral external rotation
Definition
Infraspinatis
teres minor
Posterior deltoid
Term
Agonist for glenohumeral horizontal abduction
Definition
posterior deltoid
Term
Agonists for glenohumeral horizontal adduction
Definition
Anterior deltoid
pectoralis major
coracobrachialis
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