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Skeletal Muscles: Upper Torso
Shoulder Joint
33
Anatomy
Undergraduate 2
10/19/2016

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Cards

Term
The tree heads of the Deltoid (Spinal/Posterior, Acromial/lateral and clavicular/anterior) originate from the _______, ________ and _________ respectively
Definition
Spine of scapula, acromion of the scapula, clavicle
Term
all three heads of the deltoid insert at the _______
Definition
Deltoid tuberosity of humerus
Term
Action: Deltoid - Spinal (Posterior) Head
Definition
Extension of arm at shoulder; lateral rotation of humerus
Term
Action: Deltoid - Acromial (Lateral) Head
Definition
Arm abduction
Term
Action: Deltoid - Clavicular (anterior) Head
Definition
Flexion of arm at shoulder and medial rotation of humerus
Term
Name the 3 heads of the deltoid
Definition
Spinal, Acromial and CLavicular
Term
Origin: Pectoralis Major
Definition
medial part of clavical and costal cartilage of 1-6 ribs
Term
The Pectoralis Major, _________ and _________ insert at the _______ groove of the humerus
Definition
Latissimus Dorsi, Teres Major, Bicipital
Term
Action: Pectoralis Major
Definition
Flexion of arm at shoulder, extension of a flexed arm, medial rotation and adduction of humerus and horizontal flexion (drawing humerus across the body)
Term
Origin: Latissimus Dorsi
Definition
Back of the sacrum, lumbar vertebrae and lower thoracic vertabrae
Term
Action: Latissimus Dorsi
Definition
Arm extension, medial rotation and adduction of humerus
Term
Name the 4 muscles of the rotator cuff

HINT: Stephen Is The Sweetest
Definition
Supraspinatus, Infraspinatus, Teres Minor, and Subscapularis
Term
Origin: Supraspinatus
Definition
Supraspinous fossa of the scapula
Term
_______, _________ and _______ muscle all insert on the _____ tubercle of the humerus while the _________ muscle which inserts in the lesser tubercle of the humerus.

NOTE: that the ______ inserts right below the _____ on the _____ tubercle
Definition
supraspinatus, infraspinatus, teres minor, Greater, subscapularis, Teres minor, infraspinatus tubercle
Term
Action: Supraspinatus
Definition
Provide strength and stability to shoulder joint and initiate arm abduction (once shoulder starts to abduct, deltoid takes over)
Term
Origin: Infraspinatus
Definition
Infraspinous fossa of scapula
Term
Action: Infraspinatus
Definition
Provides strength to posterior component of shoulder joint capsule and laterally rotates humerus
Term
The Teres major & minor originate at the ___________
Definition
Lateral boarder of scapula
Term
Action: Teres Minor
Definition
Provide posterior support to shoulder joint capsule as well as adduct and laterally rotate humerus
Term
Origin: Subscapularis
Definition
Subscapular fossa of scapula
Term
Action: Subscapularis
Definition
Provide anterior strength to shoulder joint capsule as well as medially rotate and adduct humerus
Term
Action: Teres Major
Definition
Arm Extension and medial rotation of humerus
Term
The _______ and Coracobrachialis both originate at the __________ of the scapula
Definition
Biceps Brachii (Short head), Coracoid process
Term
Both heads of the Biceps Brachii instert at the _________, and cause ________ of the arm/elbow
Definition
Radial tuberosity, flexion
Term
Origin: Biceps Brachii - Long head
Definition
Supraglenoid tubercle of scapula
Term
Origin: Triceps Bracii - Long head
Definition
infraglenoid tubercle of scapula
Term
All 3 heads of the triceps brachii insert at the ___________ and allow for _________ of the elbow.

NOTE: _____ and ______ heads of the triceps do not effect _______ movement because it originates below the shoulder
Definition
Olecranon process of ulna, extension, medial, lateral
Term
Origin: Triceps Bracii - Medial head
Definition
Posterior/medial aspect of humerus (medial and inferior to spiral line)
Term
Origin: Triceps Bracii - Lateral head
Definition
Posterior lateral aspect of humerus (lateral and superior to spiral line)
Term
Name the 2 heads of the bicep
Definition
Long head and short head
Term
Name the 3 heads of the tricep
Definition
Long head, Medial head and Lateral head
Term
Insertion: Coracobrachialis
Definition
Medial side of shaft of humerus
Term
Action: Coracobrachialis
Definition
Arm Flexion
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