Shoulder Region + Superficial Back Muscles

Humerus

Scapula

Clavicle

Shoulder connects the chest + arm

Bones (3) :

_____ upper arm bone

______ shoulder blade

______ collar bone

Joints (4)

Glenohumeral

Sternoclavicular

Acromioclavicular

Scapulothoracic

Shoulder connects the chest + arm

Bones -

Humerus

Scapula

Clavicle

Shoulder Joints (4):

Supraspinatus

Infraspinatus

Teres Minor

Subscapularis

Rotator cuff (4 muscles):

Supraspinatus

Injuty to shoulder

Symptoms- Pain, Weakness, Restricted Motion, Instability

________ tendon most commonly injured

-many need surgery if severely damaged

Greater Tubercle

Humerus Muscle Attachments

Muscle: Supraspinatus

Attachment:

Greater Tubercle

Humerus Muscle Attachments

Muscle: Infraspinatus

Attachment:

Greater Tubercle Upper Part of the
Lateral Border

Humerus Muscle Attachments

Muscle: Teres Minor

Attachement:

Lesser Tubercle

Humerus Muscle Attachments

Muscle: Subscapularis

Attachement :

Upper Pare of the Anterior Border

Humerus Muscle Attachments

Muscle: Pectoralis Major

Attachement :

Lower part oof the lateral border lateral supracondylar Ridge

Humerus Muscle Attachments

Muscle: Triceps Brachii

Attachement :

Lateral Supracondylar Ridge

Humerus Muscle Attachments

Muscle: Brachioradialis

Attachement :

Lateral Supracondylar Ridge

Humerus Muscle Attachments

Muscle: Extensor Carpi Radialis Longus

Attachement :

Crest of the Lesser Tubercle

Humerus Muscle Attachments

Muscle: Teres Major

Attachement :

Crest of the Lesser Tubercle

Humerus Muscle Attachments

Muscle: Coracobrachialis

Attachement :

Medial Suprecondylar Ridge

Humerus Muscle Attachments

Muscle: Brachialis

Attachement :

Medial Supracondylar Ridge

Humerus Muscle Attachments

Muscle: Pronator Teres

Attachement :

Bicipital Groove

Humerus Muscle Attachments

Muscle: Latissimus Dorsi

Attachment:

Pectoral girdles

sternoclavicular

_____________

-made up of clavicle and a scapula

-belongs to superior appendicular skeleton

• _________ joint connects it to the axial skeleton

pectoralis major

sternocleidomastoid, trapezius

deltoid muscle, trapezius

Clavicle Muscle Attachments

Anterior border: _____

Posterior border: ____ ( clavicular head)

Superior surface: _____

Inferior surface: subclavius

Coracoclavicular Ligaments:

connects the clavicle to the coracoid process of scapula

2 parts : Trapezoid Ligament + ______ ligament (posterior)

Pectoralis Minor

Pectoral Girdle

______

draws the superior portion of scapula anteriorly

Coracobrachialis

Pectoral Girdle

______

aids in flexing and abducting the

Serratus anterior

Pectoral Girdle

______

pulls the scapula forwards around the thorax

Pectoral Girdle

______ (long head)

extends the elbow, acts as a stabilizer when involved in adduction
of the arm

Biceps

Pectoral Girdle

______
both long and short heads – opposes triceps, flexes the elbow as well as weak
assistance in shoulder flexion and abduction

Subscapularis

Pectoral Girdle

______

internal rotator of the shoulder

Rhomboid major + minor

Pectoral Girdle

______

holds the scapula to the rib cage, and scapula retraction

Levator Scapulae

Pectoral Girdle

______

it elevates the scapula

Trapezius

Pectoral Girdle
________

upper fibers elevate and the lower fibers depress, they also play a role in
scapula rotation

Pectoralis minor

Pectoral Girdle
________

draws the superior portion of scapula anteriorly

Deltoids

Pectoral Girdle
________

the portions cover the shoulder in many directions therefore assist in all of
abduction, elevation, extension and rotations of the shoulder depending on which portion is
active

surpaspinatus

Pectoral guide

_______

abductor of the arm

Infraspinatus

Pectoral guide

_______

external rotator of the shoulder

Teres minor

Pectoral guide

_______

an external rotator of the shoulder

Teres Major

Pectoral guide

_______

a medial rotator and adductor

Latissimus Dorsi

Pectoral guide

_______

a depressor of the arm

Omohyoid

Pectoral guide

_______

a neck muscle, depressed the hyoid bone and larynx

Coracoacromial ligament

Pectoral girdle

Ligaments that attach to the scapula

• __________ is attached to the lateral border of the coracoid process and to the medial side of the tip of the acromion process

Coracohumeral ligament

Pectoral girdle

Ligaments that attach to the scapula

• __________ is attached to the root of the coracoids process.

Coracoclavicular ligament

Pectoral girdle

Ligaments that attach to the scapula

• __________ is attached to the coracoid process; the trapezoid part on the superior aspect, and the conoid part near the root. The coracoclavicular ligament is made up of 2 bands: the
conoid and the trapezoid, both of which provide vertical stability. The coracoacromial ligament
connects the coracoid process to the acromion

Suprascapular ligament

Pectoral girdle

Ligaments that attach to the scapula

• __________bridges across the suprascapular notch and converts it into a foramen which transmits the suprascapular nerve. The suprascapular ligament lie above the ligament.

Spinoglenoid ligament

Pectoral girdle

Ligaments that attach to the scapula

• __________ bridges the spinoglenoid notch. The suprascapular vessels and nerve pass
to it

Acromioclavicular ligament

Pectoral girdle

Ligaments that attach to the scapula

• __________ connects the distal end of the clavicle to the acromion and provides
horizontal stability
Pectoral Girdle

Supraspinatous

Rotator cuff muscles

_____

This muscle forms the
upper border of the rotator cuff. It helps
you bring your arm away from your
body.

Infraspinatous:

Rotator cuff muscles

______

This muscle is
positioned more behind the shoulder
joint. It helps to externally rotate the
arm, for example, when you are
throwing a ball.

Teres Minor

Rotator cuff muscles

_______

This muscle primarily
helps externally rotate the shoulder, but
it also helps pull the arm into the body

Subscapularis

Rotator cuff muscles

_______

This is the only rotator
cuff muscle that is in front of the
shoulder. It helps rotate the arm toward
the body, such as when you touch your
stomach

Superficial Intermediate Deep

Muscles of back :

______
associated with
movements of the shoulder.

______ associated with
movements of the thoracic cage

_______ associated with
movements of the vertebral
column

• Trapezius
• Latissimus dorsi
• Levator scapulae
• The Rhomboid Major and Minor

List superficial back muscles (5):

infraspinatus and teres minor

Shoulder Movement

External Rotation

Muscle:

pectoralis major teres major

Shoulder Movement:

Internal Rotation

Muscle: subscapularis, _______, latissimus dorsi, ______ ______ and anterior deltoid

supraspinatus

deltoid

trapezius + serratus anterior

Shoulder Movement:
Abduction

Muscle:

0-15 deg. :

25-90 deg:

> 90 deg:

deltoid, latissimus dorsi, teres major

Shoulder Movement":
Extension

Muscle:

pectoralis major, anterior deltoid, and coracobrachialis, and biceps brachii

Shoulder Movement:

Flexion

Muscle: