Overview of upper limb scapular and pectoral regions Flashcards
What is fascia?
connective tissue that binds things together
What is flexion vs extension?
flexion = decrease angle of joint, extension= increase angle
Arm extends from what to what?
Forearm from what to what?
shoulder to elbow, forearm from elbow to wrist.
Whats red, whats green?
Scapula= red, clavicle = green, black = manubrium “shield”
What are all the bones in color? What is the little opening between the bones in the forearm called?
What are each of these colored bones
mnuemonic: Some lovers try positions that they cant handle
scaphoid, looked like little canoe, or sciff. Lunate “half moon”, TranpeziTHUMB
What kind of joints are in the hand?
synovial
What is intermuscular septum?
Intermuscular fascia is fascia that divides the anterior flexor part of a muscle from the posterior extensor part
in red
Antebrachial fascia
Compartmentalize anterior flexor part from posterior extensor part of forearm.
Flexor retinaculum
Deep investing fascia specialize and thicken at the wrist to reinforce and hold down all the long tendons that are passing from the forearms into the hand.
Palmer aponeurosis
Little finger like projections, anchor out into the skin and into the connective tissue of the digits
What are the two patterns of sensory innervation that occur in the upper limb?
Segmental innervation (dermatomes) by spinal nerves
Multisegmental innervation by peripheral (named) nerves from the brachial plexus
What is the yellow? What is it the main source of?
What does it give rise to?
What is this? What does it do?
Thyrocervical trunk, it supplies muscles of the scapula via suprascapular and transverse cervical arteries
What is the green and blue?
The subclavian artery becomes what after it crosses the lateral border of the first rib?
anastomosa, where do they usually occur?
two blood vessels of about the same size coming together
Around joints, because allow for alternative routes of blood supply in case of blockage
What are the two types of veins in the upper limb?
Where do they unite?
Muscles of the pectoral region do what?
Movements of the pectoral girdle do what?
Anterior thoraco- appendicular muscles
Posterior thoraco-appendicular muscles
Innervation, action?
Innervation
Action
Named by a part of the nerve plexus that supplies the upper limb, medial chord and lateral chord.
Lateral pectoral nerve just goes straight to major and supplies it, medial supplies both minor and major
Name?
Innervation
Action?
What happens if you damage the long thoracic nerve on one side?
Get winged scapula, median border wings out
innervation
action
Movements of the glenohumeral joint
Scapulo humeral (intrinsic shoulder) muscles
Rotator cuff muscles
SITS
supraspinatus
infraspinatus
teres minor
subscapularis
Innervation
action
innervation
action
innervation
action
Innervation
Action
Innervation
action
Innervation
Action
What are bursa? where are they put? what can happen to them in disease state
Little serous sacs between filled with fluid, between boney landmarks and tendons, like cushion. Can become inflamed.
Subacromial bursa
What is this?
What nerve and artery travel through?
