UL Concept B Flashcards
What are the anterior axioappendicular muscles of shoulder?
Pectoralis major
Pectoralis minor
Serratus anterior
Subclavius
What are the posterior axioappendicular muscles of shoulder?
Trapezius Latissimus dorsi Rhomboid major Rhomboid minor Levator scapula
What are the scapulohumeral muscles of shoulder?
Deltoid
Teres major
Rotator cuff muscles (4)
Where are the actions of the axioappendicular muscles?
Pectoral girdle
Shoulder joint
What is the proximal attachment of pectoralis major?
Clavicle/ sternum
What is the distal attachment of pectoralis major
Intertubercular sulcus of humerus
What are the actions of pectoralis major?
Flexion at shoulder
Adduction at shoulder
Medial rotation at shoulder
What is the proximal attachment of pectoralis minor?
Ribs 3-5
What is the distal attachment of pectoralis minor?
Coracoid process of scapula
1 of 3 other muscles to attach to coracoid process
What is the action of pectoralis minor?
Stabilises scapula
What is the proximal attachment of sarratus anterior?
Ribs 1-8
What is the distal attachment of sarratus anterior?
Scapula
What is the action of sarratus anterior?
Holds scapula to Thoracic wall.
Especially active during pushing
What is the proximal attachment of subclavius?
1st rib
What is the distal attachment of subclavius?
Clavicle
What is the action of subclavius?
Stabilises/depresses clavicle
What is the proximal attachment of trapezius?
Skull
Nuchal ligament
C7-T12
What is the distal attachment of trapezius?
Scapula & Clavicle
What is the action of trapezius on pectoral girdle?
Elevation, retraction, & depression
What is the proximal attachment of latissimus dorsi?
T7-sacrum, ilium, ribs
What is the distal attachment of latissimus dorsi?
Intertubercular sulcus of humerus
What is the action of latissimus dorsi on humerus?
Extension @ shoulder
Adduction @ shoulder
Medial rotation @ shoulder
What is the proximal attachment of Rhomboid major?
T2-T5
What is the distal attachment of Rhomboid major?
Scapula (medial border)
What is the action of Rhomboid major on scapula girdle?
Retraction
What is the proximal attachment of Rhomboid minor?
C7-T1
What is the distal attachment of Rhomboid minor?
Scapula (medial border @ spine)
What is the action of Rhomboid minor on pectoral girdle?
Retraction
What is the proximal attachment of levator scapulae?
C1-C4
What is the distal attachment of levator scapulae?
Scapula (superior to spine)
What is the action of levator scapulae?
Elevation
What is the proximal attachment of deltoid?
Scapula/ clavicle
What is the distal attachment of deltoid?
Deltoid tuberosity of humerus
What are the actions of deltoid?
Primary abductor
Flexion and extension
Lateral and medial rotation
What is the proximal attachment of teres major?
Scapula
What is the distal attachment of teres major?
Intertubercular sulcus of humerus
What is the action of teres major?
Adduction and medial rotation
Name the rotator cuff muscles
Supraspinatus
Infraspinatis
Teres minor
Subscapularis
What is the proximal attachment of supraspinatus?
Supraspinous fossa of scapula
What is the distal attachment of supraspinatus?
Greater tubercle of humerus
What is the action of supraspinatus?
Initiates first 15 degrees of abduction
What is the proximal attachment of infraspinatus?
Infraspious fossa of scapula
What is the distal attachment of infraspinatus?
Greater tubercle of humerus
What is the action of infraspinatus?
Lateral rotation
What is the proximal attachment of teres minor?
Lateral border of scapula
What is the distal attachment of teres minor?
Greater tubercle of humerus
What is the action of teres minor?
Lateral rotation
What is the proximal attachment of subscapularis?
Subscapularis fossa of scapula
What is the distal attachment of teres minor?
Lesser tubercle of humerus
What is the action of teres minor?
Lateral rotation
What collectively holds the head of the humerus in the shallow glenoid cavity?
Rotator cuff muscles
What surrounds Anterior & posterior arm muscles?
Brachial fascia
Anterior section of arm creates _________
Posterior section of arm creates _________
Flexion
Extension
Name posterior arm muscles
Triceps Brachii long head
Triceps Brachii medial head
Triceps Brachii lateral head
Name the anterior arm muscles
Biceps brachii long head
Biceps brachii short head
Coracobrachialis
Brachialis
Triceps brachii long head Proximal attachment
Scapula
Infraglenoid tubercle? (posterior)
Triceps brachii lateral head Proximal attachment
Humerus
Triceps brachii medial head Proximal attachment
Humerus
What is the distal attachment of all 3 triceps muscles?
Olecranal process
Action of triceps
Extension at elbow
Biceps brachii long head Proximal attachment
Scapula
Supraglenoid tubercle?
Biceps brachii short head Proximal attachment
Coracoid process
Both biceps brachii distal attachments
Radial tuberosity
Biceps brachii action
Supination of forearm
Flexion at elbow
Coracobrachialis proximal attachment
Coracoid process
Coracobrachialis distal attachment
Middle third of humerus
Coracobrachialis action
Flexion at shoulder
Reinforces shoulder anteriorly
Brachialis proximal attachment
Distal half of humerus
Brachialis distal attachment
Coranoid process of ulna
Brachialis action
Primary flexor of elbow
Abductors (2) shoulder
DELTOID
Supraspinatus
Adductors (6) shoulder
LATISSIMUS DORSI PECTORALIS MAJOR Coracobrachialis Teres major Teres minor Infraspinatus
Extensors (4) shoulder
LATISSIMUS DORSI
DELTOID
Teres major
Long head triceps brachii
Flexors (4) shoulder
PECTORALIS MAJOR
DELTOID
Coracobrachialis
long head of biceps brachii
Lateral rotators (3) shoulder
INFRASPINATUS
TERES MINOR
Deltoid
Medial rotators (5) shoulder
Subscapularis Deltoid Latissimus dorsi pectoralis major Teres major
Which anterior arm muscle causes flexion in all positions?
Brachialis
Deltoid is extensor. True?
Yes
LATISSIMUS dorsi is a flexor or extensor?
Extensor
The three muscles that attach to corocoid process are…
Pectoralis minor
Coracobrachialis
Biceps brachii short head