Term
Prime movers of shoulder joint
FLEXION |
|
Definition
Anterior Deltoid
Pectoralis Major - clavicular portion to ≈ 60° |
|
|
Term
Prime movers of shoulder joint
Extension |
|
Definition
Posterior Deltoid
Latissimus dorsi
Teres Major
pectoralis major - sternal portion to ≈ 120° |
|
|
Term
Prime movers of shoulder joint
Hyper-extension |
|
Definition
Latissimus dorsi
posterior Deltoid |
|
|
Term
Prime movers of shoulder joint
abduction |
|
Definition
|
|
Term
Prime movers of shoulder joint
adduction |
|
Definition
Pectoralis major
teres major
latissimus dorsi |
|
|
Term
Prime movers of shoulder joint
Horizontal abduction |
|
Definition
posterior deltoid
infraspinatus
teres minor |
|
|
Term
Prime movers of shoulder joint
horizontal adduction |
|
Definition
pectoralis major
anterior deltoid |
|
|
Term
Prime movers of shoulder joint
Lateral rotation |
|
Definition
infraspinatus
teres minor
posterior deltoid |
|
|
Term
Prime movers of shoulder joint
Medial rotation |
|
Definition
Latissimus dorsi
teres major
subscapularis
pectoralis major
anterior deltoid |
|
|
Term
How many muscles span the shoulder joint?
Name them. |
|
Definition
11
Deltoid coracobrachialis
Supraspinatus biceps brachii
Pectoralis major triceps brachii long head
latissimus dorsi subscapularis
teres major
infraspinatus
teres minor
|
|
|
Term
| What are the SITS muscles? |
|
Definition
Supraspinatus
Infraspinatus
Teres Minor
Subscapularis
also called rotator cuff muscles
They hold the head of the humerus in the glenoid fossa as it moves in the joint. |
|
|
Term
| Name the muscles that attach to the Anterior portion of the scapula. |
|
Definition
Subscapularis - subscapular fossa
Coracobrachialis - coracoid process
Biceps short head - coracoid process
Pectoralis minor - coracoid process
Serratus anterior - anterior surface of vertebral border
The book does not list Pec minor or serratus for some reason. Need to ask Mia to clarify this. Some of these are Joint and some Girdle muscles
|
|
|
Term
| Names the shoulder joint muscles attached to the posterior side of the scapula. Don't forget to distinguish between Joint and Girdle muscles. |
|
Definition
Supraspinatus - supraspinous fossa
infraspinatus - infraspinous fossa
Teres major - Axillary border near inferior angle
teres minor - axillary border (above t major)
posterior deltoid muscles - spine of scapula (lateral)
Girdle muscles
Trapezius Upper, middle, lower
Levator Scapula - Vert border +
Rhomboids - vert border |
|
|
Term
| what shoulder joint muscles do NOT attach to the scapula |
|
Definition
Latissimus Dorsi - humeral attachment
Pectoralis Major - humeral attachment
ANTERIOR Deltoid- clavicular attachment |
|
|
Term
| describe the glenoid labrum |
|
Definition
| a fibrous ring that surrounds the rim of the glenoid fossa it functions to deepen the articular cavity. |
|
|
Term
| what do the superior, middle and inferior glenohumeral ligaments do? |
|
Definition
| reinforce the anterior portion of the joint capsule. Not well defined ligaments part of the folds of the joint capsule |
|
|
Term
What are the attachment points of the
coracohumeral ligament? |
|
Definition
the coracohumeral ligament attaches from the lateral side of the coracoid process and spans the joint anteriorly to the medial side of the greater tubercle. it strengthens the upper part of the joint capsule.
page 110 fig 9-5 9-6 |
|
|
Term
| what has happened in a first degree acromioclavicular sprain/separation? |
|
Definition
the acromioclavicular ligament is stretched. |
|
|
Term
| What has happened in a second degree AC separation? |
|
Definition
the acromioclavicular ligament is ruptured
the coracoclavicular ligament is stretched |
|
|
Term
| What has happened in a third degree AC separation? |
|
Definition
| Both the acromioclavicular and coracoclavicular ligaments are ruptured. |
|
|
Term
| What muscles are part of the force couple during shoulder abduction? |
|
Definition
Deltoid
supraspinatus
subscapularis
infraspinatuus
teres minor |
|
|
Term
| Which muscles of the shoulder are innervated by C5 and C6 only. |
|
Definition
Subscapularis
supraspinatus
infraspinatus
deltoid
teres minor and major
biceps
pectoralis major |
|
|
Term
| What nerve segments innervate Pectoralis Major |
|
Definition
|
|
Term
| What nerve segments innervate Latissimus dorsi? |
|
Definition
|
|
Term
| What nerve segments innervate triceps brachii? |
|
Definition
|
|
