Superficial Back and Shoulder Flashcards
Trapezius function and innervation
Elevates, depresses, retracts and rotates scapula upward (adducts)
Accessory nerve
Latissimus Dorsi function and innervation
Adducts, extends, and medially rotates humerus
Thoracodorsal nerve
Inside of nerves going to muscles
Somatosensory and somatomotor, postganglionic sympathetic
Cutaneous nerve inside
Somatosensory and postganglionic sympathetic
Levator scapulae function and innervation
Elevates and retracts scapula
Dorsal scapular nerve
Rhomboids function and innervation
Retract and elevate scapula
Dorsal scapular nerve
3 muscles of pectoral region
pec maj and min
Serratus anterior
Pectoralis major function and innervation
Adducts, medially rotates, flexes humerous
Medial and lateral pectoral nerves
Pectorlais minor function and innervation
Depresses and inferiorly rotates scapula
Medial pectoral
Serratus anterior function and innervation
Protracts and rotates scapula
Long thoracic nerve
Intrinsic shoulder muscles
Rotator cuff
Deltoid
Teres major
Deltoid function and innervation
Abducts arm, flexes and medially rotates arm, extends and laterally rotates arm
Axillary nerve
Teres major function and innervation
Adducts, extends, and medially rotates humerus
Lower subscapular nerve
Rotator cuff muscles
Supraspinatus, infraspinatus, suscapularis, teres minor
Subscapularis function and innervation
Medially rotates humerus
Upper and lower subscapular nerves
Supraspinaturs function and innervation
Initiates abduction of humerous
Suprascapular nerve
Infraspinatus function and innervation
Laterally rotates humerus
Suprascapular nerve
Teres minor function and innervation
Laterally rotates humerus
Axillary nerve
All rotator but subscapularis sit on
greater tubercle (SIT)
Rotator cuff injury normally involves
supraspinatus
Which initiates abduction of arm?
supraspinatus - very important
90 degree abduction
deltoid
Greater than 90 degree abduction
Trap and serratus anterior
Venous types of upper limb
Deep and superficial
Differece between superficial and deep veins
Deep - have accompanying arteries and in deep fascia
Superficial - no accompanying arteries and in supericial fascia
Venae comitantes
Accompanying veins to arteries Deep
Deep veins of upper limb
Radial, ulnar, brachial, axillary subclavian
Follow path of arteries
All deep veins drain into
axillary vein and then into subclavian vein
Cephalic vein location
Radial side of hand and asecends laterally to deltopectoral traingle
Basilic vein location
Ulnar side of hand and ascends medially
Pierces brachial fascia and joins with brachial veins
Median cubital vein location
Superficial to bicipital aponeurosis
Communcation between cephalic and basiclic vein
Common site for venipuncture
Median cubital vein
Veins on posterior of hand
Dorsal venous network
What forms deltopectoral triangle?
Pectoralis major, deltoid, and clavicle
Functions of lymphatic system
Drain interstitial fluid and return to venous system
Filter fluid
Components of lymphatic system
Lymphatic capillaries and vessels Lymph nodes (filter fluid)
What happens to most interstitial fluid?
Taken back up into the venous system
Superficial symphatic vessels
Superficial to deep fascia
Follow superficial veins
Drain into deep lymphatic vessels
Deep lymphatic vessels
Deep to deep fascia
Follow arteries
Enter right lymphatic duct or thoracic duct
Lower limbs drain to the
cysterna chyli
Where do right lymphatic duct and thoracic duct enter back into the venous system?
Intersection of internal jugular vein and subclavian vein
Thoracic duct
Receives drainage from majority of the body
Cisterna chyli
Inital dilated portion of the thoracic duct
Left jugular trunk
Left side of head and neck
Left subclavian trunk
Left upper extremity
Left bronchomediastinal trunk
Left side of thorax
Tributaries of thoracic duct
Left jugular
Left subclavian
left bronchomediastinal
Vessels from posterior intercostal and mediastinal
Right lymphatic duct tributaries
Riht jugular
Right subclavian
Right bronchomediastinal
Superficial lymphatic nodes and locations
Supratrochlear nodes (cubital fossa) Deltopectoral nodes (cephalic/axllary vein junction)
Axillary lymph node drain pattern
Lateral nodes and pectoral and subscapular nodes drain into central nodes that drain into apical nodes
Lateral node location
Around axillary artery
Pectoral and subscapular nodes
around lateral thoracic and subscapular arteries
Apical lymph node efferent vessels form
Subclavian trunks
what empties into the venous system?
Thoracic and right lymphatic ducts
