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