Flashcards in Back and shoulder dissection Deck (87):
Name the superficial muscles of the back
Rhomboids (major and minor)
What do the superficial trunk muscles attach?
The pectoral girdle to the trunk
Give the origin of the upper fibres of trapezius
External occipital protuberance of skull
Spinous processes of cervical vertebrae
Give the insertion of the upper fibres of trapezius
Spine of scapula
Give the origin of the medial fibres of trapezius
Spinous processes of upper thoracic vertebrae
Give the insertion of the medial fibres of trapezius
Spine of the scapula
Give the origin of the lower fibres of the scapula
Spinous processes of the lower thoracic vertebrae
Give the insertion of the lower fibres of the scapula
Spine of scapula
What muscles lie below trapezius?
Major and minor rhomboids
Give the origin of the rhomboids
Spinous processes C7 to T5
Give the insertion of the rhomboids
Medial border of the scapular
Where is latissimus dorsi found?
Large flat muscle in thoracic region of the back
Give the origin of latissimus dorsi
Give the insertion of latissimus dorsi
Intertubercular sulcus/bicipital groove of the humerus
Describe the travel of latissimus dorsi
Muscle fibres travel upwards round the inferior angle of scapula to the intertubercular sulcus
Give the origin of serratus anterior
Upper 8 ribs
Describe the travel of serratus anterior
Between the scapula and ribs
Give the insertion of serratus anterior
Medial border of scapula
Name the intermediate back muscles
Serratus posterior superior
Serratus posterior inferior
What is the function of serratus posterior inferior and superior?
Accessory respiratory muscles that help to expand the chest cavity during inspiration
Where are the deep intrinsic muscles of the back found?
In the groove between the spinous processes of the vertebrae and the angle of the ribs
What is the largest group of the deep intrinsic back muscles?
What does erector spinae incorporate?
Give the origin of the erector spinae muscles
Erector spinae aponeurosis
What is the Erector spinae aponeurosis?
Broad thick tendon at base of the back
Which muscle is the spinales muscle?
Give the insertion of the spinales muscle
Thoracic spinous processes and skull
Which muscle is the longissimus muscle?
Give the insertion of longissimus
Thoracic and cervical spinous processes
Which muscle is iliocostalis?
Give the insertion of iliocostalis
Where is the multifidus muscle found?
Under erector spinae
Give the origin of multifidus
Give the insertion of multifidus
What is multifidus?
Major stabiliser of the back
Extends vertebral column
What makes up the pectoral girdle?
Where do the clavicle and scapula articulate?
Where does the pectoral gridle articulate with the trunk?
Describe the glenohumeral joint
Shallow articulation between the head of the humerus and the glenoid fossa of the scapula
Synovial ball and socket joint
Describe the roof of the small space the tendon of supraspinatus passes
What can cause injury to supraspinatus?
Overhead activity eg throwing can cause impingement of this tendon
What forms the quadrangular space?
the shaft of the humerus
long head of triceps brachii
What forms the axilla?
apex, base and four walls
Where is the axillary fossa found?
Base of the axilla
What makes up the axillary fossa?
Skin and subcutaneous tissue
What is the apex (inlet) of the axillary fossa formed of?
1st rib (medially)
Superior border of scapula (posteriorly)
What is the anterior wall of the axilla?
Pectoralis minor and major
What is the posterior wall of the axilla formed from?
teres major, latissimus dorsi and subscapularis
What is the medial wall of the axilla?
serratus anterior muscle.
What nerve supplies serratus anterior?
Long thoracic nerve from C5,C6,C7 of brachial plexus
What is the axilla bordered by laterally?
What does the axilla contain?
and its branches, the axillary vein and its tributaries, lymph vessels and nodes, and the
What is the axillary artery?
Continuation of the subclavian artery
Where does the subclavian artery pass?
Through scalene triangle
What forms the scalene triangle?
anterior and middle scalene muscles and the first rib.
Where does the axillary artery become the brachial artery?
Lower border of teres major
Where do the anterior and posterior circumflex humeral arteries travel?
Wind around the surgical neck of humerus
What does the subscapular artery contribute to?
Anastomosis of the shoulder region
Describe the axillary vein
Drains basilic vein into subclavian vein
Where does the axillary vein terminate as the subclavian vein?
Where is the basilic vein located?
Medial side of the arm
Where is the cephalic vein located?
What does the cephalic vein join
Where are the trunks of the brachial plexus located?
Pass through the scalene triangle with the subclavian artery
What do the trunks of the brachial plexus divide to form?
Anterior and posterior divisions
Which muscle overlies cords?
What are the cords named relative to?
Name the terminal branches of the brachial plexus
Name the four rotator cuff muscles
Give the origin of supraspinatus
Give the insertion of supraspinatus
Anterior facet of the greater tubercle of the humerus
Give the origin of infraspinatus
Give the insertion of infraspinatus
Middle facet of the greater tubercle of the humerus
Give the origin of teres minor
Dorsal aspect of the lateral border of the scapula
Give the insertion of teres minor
Lowest facet of the greater tubercle of the humerus
Give the origin of teres major
Inferior angle of scapula
Give the insertion of teres major
Medial lip of the intertubercular sulcus of the humerus
Give the insertion of deltoid muscle
Deltoid tuberosity of the humerus
Give the origin of the deltoid muscle
Lateral third of the clavicle
Spine of the scapula
Which muscle gives the shoulder its round shape?
What surrounds the glenohumeral joint?
Fibrous joint capsule
Where is the fibrous joint capsule attached?
Rim of the glenoid fossa
Anatomical neck of the humerus
What is the fibrous joint capsule strengthened by?
Attachments of rotator cuff muscles
Where do the attachments of rotator cuff muscles surround the joint?
On all sides except inferiorly
Which ligaments helps to stabilize the glenohumeral joint?
Where do the glenohumeral joints stabilise?