MSK_MT1_DSA4 (Clavicle, Scapula & Humerus = Glenohumeral Joint.) Flashcards
Which part of the clavicle does the costoclavicular ligament attach to?
Which artery gives rise to the nutrients branches of the clavicle?
suprascapular artery
Which bony structure does the clavicle articulate with medially?
manubrium of sternum
Which part of the clavicle does the interclavicular ligament attach to?
sternal end of the clavicle
Which bony structure does the clavicle articulate with laterally?
Acromion of Scapula
Which of the following muscles attaches to the anterior surface of the clavicle?
deltoid
Which bone is responsible for transmitting traumatic impacts from the upper limb to the axial skeleton?
clavicle
What bony structures does the scapula articulate with? (2)
- acromeal facet of the clavicle
- body of the humerous
Bones of shoulder Girdle are
formed by:
- the scapulae, posteriorly
- the clavicles anteriorly
3. completed anteriorly by the manubrium of the sternum (axial skeleton).
Function of Shoulder Girdle is
Connecting the upper limbs → axial skeleton
Joints of Shoulder Girdle are (3)
- Acromioclavicular (AC) joint
- Sternoclavicular (SC) joint
- Glenohumeral joint
Acromioclavicular (AC) joint
- synovial joint
- connects to ateral part of the acromion
Ligaments of the AC Joint (4)
- acromioclavicular ligament, the sleevelike loose fibrous
- trapezoid ligament (nearly horizontal)
- conoid ligament (vertical)
- coracoclavicular ligament.
Arteries of the AC Joint (2)
- suprascapular
- thoracoacromial
Nerves of the AC Joint (3)
- suprascapular
- lateral pectoral
- axillary nerves
Sternoclavicular joint (SC joint)
ball and socket joint
discs = shock absorber (attached by sternoclavicular ligaments)
Ligaments of the SC joint (4)
- anterior sternoclavicular
- posterior sternoclavicular
- the interclavicular ligament
- costoclavicular ligament.
Artries of the SC Joint
- internal thoracic
- suprascapular
Nerves of the SC Joint
- medial suprascapular nerve
- the nerve to the subclavius muscle
Glenohumeral joint
ball and socket type of synovial joint
movements include:
- flexion
- extension
- abduction
- adduction
- rotation (medial and lateral rotation)
- circumduction.