Chp 5 shoulder joint
Adduction
Downward movement of the humerus in the frontal plane medially toward the body from abduction
The shoulder joint is known as the ___________________ joint
Glenohumeral joint
rotator cuff issues
Loss of function of the rotator cuff muscles, due to injury or loss of strength and endurance may cause humerus to move superiorly resulting in impingement.
Horizontal abduction (extension)
Movement of the humerus in a horizontal or transverse plane away from the chest
Horizontal adduction (flexion)
Movement of the humerus in a horizontal or transverse plane toward and across the chest
External rotation
Movement of the humerus laterally the transverse plane around its long axis away from the midline
Flexion
Movement of the humerus straight anteriorly from any point in the sagittal plane
Extension
Movement of the humorous straight posteriorly from any point in the sagittal plane, sometimes referred to as hyperextension
while the biceps and triceps cross the shoulder joint and have origins that are above the shoulder joint, are they considered shoulder joint muscles and are they agonists for any movements of the shoulder joint?
No, no
GIRD and pre cursor issues
Studies have demonstrated that overhead athletes who had a GIRD of greater than 20% had a higher risk of injury than those who did not. appropriate stretching exercises may be used to regain the amount of internal rotation necessary to improve performance and reduce the likelihood of injury
Abduction
Upward lateral movement of the humerus in the frontal plane out to the side away from the body
what muscle works closely with the pectoralis major?
anterior deltoid
latissimus dorsi means
broadest muscle of the back
which shoulder joint muscle is not a powerful muscle?
coracobrachialis muscle
side arm dumbbell raises are good for strength for which muscle
deltoids
why is the pectoralis major often overdeveloped?
due to popularity of bench pressing and other weight lighting exercises that emphasize the pec major
it is the most powerful of the rotator cuff muscles and is the second most commonly injured
infraspinatus muscle
the teres minor performs the same movements as what other rotator cuff muscle?
infraspinatus muscle
what muscle in is important to maintain the posterior stability of the glenohumeral joint
infraspinatus muscle
stretching of the infraspinatus muscles is done by ?
internal rotation and extreme horizontal adduction
best way to stretch the coracobrachialis ?
is by extreme horizontal abduction
chinning, rope climbing and other up rise movements on the horizontal bar are good examples of using what muscle ?
latissimus dorsi
most important extensor muscles of the humerus
latissimus dorsi
what muscle is particularly developed when swimming and is known as contributing particularly to a swimmers build?
latissimus dorsi
pectoralis major is also works as a helper to which muscle when extending and adducting the humerus from a raised position?
latissmus dorsi
diagonal abduction
movement by a limb through a diagonal plane away from the midline of the body
diagonal adduction
movement of the humerus in a diagonal plane toward the midline of the body
internal rotation
movement of the humerus in the transverse plane medially around its long axis toward the midline
Various exercises that particularly relate to the development of a what muscle when doing BENCH PRESS?
pectoralis major
Various exercises that particularly relate to the development of a what muscle when doing PULL-UPS?
pectoralis major
Various exercises that particularly relate to the development of a what muscle when doing PUSH UPS?
pectoralis major
Various exercises that particularly relate to the development of a what muscle when doing THROWING?
pectoralis major
GIRD
represents a difference in internal rotation range of motion between an individual's throwing and non throwing shoulders
the teres major is effective only when what muscle is stabilizing the scapula ?
rhomboid muscles
rotator cuff exercises
rope climbing, lat pulls, internally rotating the arm against resistance in the beside the body position
what is the rotator cuff impingement syndrome and what movements and muscles are particularly related to it?
rotator cuff impingement syndrome occurs when the tendons of these muscle , particularity the supraspinatus and infraspinatus become irritated and inflamed as they pass through the subcromial space between the acromion process of the scapula and the head of the humerus.
what muscle aids the pectoralis major in drawing the scapula forward as it moves the humerus in flexion and internal rotation
serratus anterior
" a full can exercise" is used for which muscle ?
supraspinatus
adducting the arm behind the head stretches out this rotator cuff muscle
supraspinatus
what are the two most injured rotator cuff muscles?
supraspinatus and the infraspinatus muscles
which muscle assists the latissimus dorsi in all of its actions and is considered the "lats little helper"?
teres major
which muscle is involved in virtually all actions involving "lifting"?
the deltoid
subscapularis muscle works along side what muscles ?
the latissimus dorsi and the teres major and maybe exercised by doing the same exercises for those muscles to include rope climbs, lat pulls.
what muscle stabilizes the scapula as the deltoid pulls on the humerus?
trapezius muscle
true or false? : any movement humerus on the scapula will involve part or all of the deltoid muscle
true