Muscles of the Upper Limb - Axilla and Brachial Plexus Flashcards
Name nerves A, B and C
A - Upper subscapular nerve
B - Lower subscapular nerve
C - Long thoracic nerve
Name muscle A
A - Long head of triceps brachii
What are the origin and insertion sites for muscle A?
Origin - 1st rib at sternocostal junction
Insertion - Groove on inferior surface of middle 1/3rd of clavicle
A - Subclavius
What is the innervation of muscle A?
Upper and lower subscapular nerves (C5, C6 and C7)
A - Subscapularis
What is the innervation of muscle A?
Nerve to subclavius (C5 and C6)
A - Subclavius
What are the origin and insertion sites for muscle A?
Origin - Medial 2/3rds of subscapular fossa
Insertion - Lesser tubercle of humerus
A - Subscapularis
What is the function of muscle A?
- Pulls tip of shoulder inferiorly
- Pulls clavicle medially
A - Subclavius
Name structures A and B
A - Medial cord (of brachial plexus)
B - Lateral cord (of brachial plexus)
Name nerves A to E
A - Musculocutaneous nerve
B - Axillary nerve
C - Radial nerve
D - Median nerve
E - Ulnar nerve
Name muscle A
A - Pectoralis major
Name muscle A
A - Triceps brachii
What is the function of muscle A?
- Medial rotation of arm at glenohumeral joint
A - Subscapularis
Name muscle A
A - Subclavius
What is the function of muscle A?
- Pulls tip of shoulder inferiorly
- Protraction of scapula
A - Pectoralis minor
Name nerve A and spinal nerves B, C and D from which it is derived
A - Long thoracic nerve
B - C5
C - C6
D - C7
What is the innervation of muscle A?
Medial and lateral pectoral nerves
A - Pectoralis major
Name the cords of the brachial plexus A, B and C
A - Lateral cord
B - Posterior cord
C - Medial cord
Name muscle A
A - Pectoralis minor
What are the origin and insertion sites for muscle A?
Origin - Posterior surface of scapula at inferior angle
Insertion - Intertubercular sulcus on the anterior surface of humerus
A - Teres major
Name vessel A
A - Axillary artery
What are the origin and insertion sites for muscle A?
Origin (Clavicular head) - Medial half of clavicle (anterior surface)
Origin (Sternocostal head) - Anterior sternum, first 7 costal cartilages, sternal end of 6th rib, aponeurosis of external oblique
Insertion - Lateral lip of intertubercular sulcus of humerus
A - Pectoralis major
What is the innervation of muscle A?
Medial pectoral nerve (C5-T1)
A - Pectoralis minor
Name structure A
A - Posterior cord (of brachial plexus)
Name nerves A to D
A - Lateral pectoral nerve
B - Suprascapular nerve
C - Dorsal scapular nerve
D - Nerve to suclavius
What is the innervation of muscle A?
Radial nerve (C6, C7, C8)
A - Long head of triceps brachii
Name muscle A
A - Teres major
Name muscle A
A - Latissimus dorsi
Name muscle A
A - Latissiumus dorsi
Name nerve A
A - Radial nerve
What is the function of muscle A?
- Adduction of arm at glenohumeral joint
- Medial rotation of arm at glenohumeral joint
- Extension of arm at glenohumeral joint
A - Latissimus dorsi
Name nerve A
A - Long thoracic nerve
Name muscle A
A - Serratus anterior
Name muscle A
A - Subscapularis
What is the innervation of muscle A?
Lower subscapular nerve (C5, C6 and C7)
A - Teres major
What is the function of muscle A?
- Extension of forearm at elbow joint
- Adduction (accessory) of arm at glenohumeral joint
- Extensor (accessory) of arm at glenohumeral joint
A - Long head of triceps brachii
What is the function of muscle A?
- Flexion at glenohumeral joint
- Adduction at glenohumeral joint
- Medial rotation at glenohumeral joint
- Flexion of extended arm (clavicular head)
- Extension of flexed arm (sternocostal head)
A - Pectoralis major
Name the sections of the brachial plexus A to E
A - Nerves
B - Cords
C - Divisions
D - Trunks
E - Roots
(Really Tired Drink Coffee Now)
What is the innervation of muscle A?
Long thoracic nerve (C5, C6 and C7)
A - Serratus anterior
What is the function of muscle A?
- Protraction of scapula
- Rotation of scapula
- Opposes medial scapular border and inferior angle to thoracic wall
A - Serratus anterior
What are the origin and insertion sites for muscle A?
Origin - Infraglenoid tubercle of scapula
Insertion - Olecranon process of ulna
A - Long head of triceps brachii
Name nerves A to D
A - Median pectoral nerve
B - Medial cutaneous nerve of arm
C - Medial cutaneous nerve of forearm
D - Thoracodorsal nerve
What are the origin and insertion sites for muscle A?
Origin - Anterior surfaces and superior borders of ribs 3-5
Insertion - Coracoid process of scapula
A - Pectoralis minor
What are the origin and insertion sites for muscle A?
Origin - Lateral surface of upper 8-9 ribs
Insertion - Costal surface of medial border of scapula
A - Serratus anterior
Name muscle A
A - Serratus anterior
What are the origin and insertion sites for muscle A?
Origin - Spinous processes of T8-T12, spinous processes of lumbar vertebrae, iliac crest, lower 3-4 ribs
Insertion - Floor of intertubercular sulcus
A - Latissimus dorsi
Name muscle A
A - Subclavius
What is the innervation of muscle A?
Thoracodorsal nerve (C6, C7 and C8)
A - Latissimus dorsi
What is the function of muscle A?
- Medial rotation of arm at glenohumeral joint
- Extension of arm at glenohumeral joint
A - Teres major
Name muscle A
A - Subclavius
