Pectoral and Shoulder Regions Flashcards
what activity do human upper limb have
prehensile not locomotor or postural
shoulder girdle movement is when
when the shoulder is abducted more then 90 degress
where does hte glenoid fossa face when the shoulder is abducted more then 90 degrees
superiorly
what are the 4 things that are ventral elements of the shoulder
- clavicle
- coracoid process
- anterior soft tissues of arm
- upper 1/3 of glenoid fossa
what kind of elements are the ribs and sternum
ventral
muscles are ventral muscles if they attach to?
ventral elements
- clavicle
- coraocid process
- upper 1/3 glen foss
- anterior comp. of arm
what are the 4 dorsal compartments
- spine of scap & acromian
- blade of scap
- vertebral column
- posterior comp. of arm
wat are the 8 muscles of the pectoral girdle
- trapeziues
- levator scapulae
- serratus anterior
- rhomboids
- pec major
- pec minor
- latissimus dorsi
- subclavius
what innervates trapezius
accessory n.
what innervates serratus anterior
long thoracic n.
what innervates levator scapulae
dorsal scapular n.
what innervates rhomboids
dorsal scapular n.
what innervates pec major
lateral and medial pectoral n
what innervates pec minor
medial pectoral n
what innervates latissimus dorsi
thoracodorsal n
what innervates subclavius
n. to subclavius (C5-C6)
what are the scapulohumeral muscles (6)
- deltoid
- teres major
- teres minor
- supraspinatus
- infraspinatus
- subscapularis
what innercates deltoid
axillary n.
what innervates teres major
lower subscapular n.
what innervates teres minor
axillary n.
what innervates supraspinatus
suprascapular n
what innervates infraspinatus
suprascapular n
what innervates subscapularis
upper and lower subscapular n
muscles anterior to shoulder joint are
flexors (pec major and delt)
muscles posterior to shoulder joint are?
extensors (post. delt, teres major, latissmus dorsi)
muscles that are superior to the shoulder are?
abducters (middle delt, supraspinatus)
muscles inferior to the shoulder joint are
adducters (pec major, latissmus dorsi, teres major)
muscles that approach the long axis of the humerus at an angle
rotators
- teres major
- latissmus dorsi
- pec major
- subscapularis
what is important about the dorsal scapular artery
it sometimes comes directly off of the subclavian artery and has nothing to do with the transverse cervical arteru
what goes over the suprascapular ligament and what goes under
suprascapular artery
suprascapular nerve
what passes through the triangular space
circumflex scapular a.
what passes through the quadratus space
posterior circumflex humeral a.
and axillary nerve
due to the arteries that wrap around the shoulder (posterior circumflex humeral, anterior circumflex humeral, and deltoid artery, what is achieved
blood flow to the arm incase the major blood pathway is ligated or blocked (axillary artery)
where do clavicular fractures usually happen
middle 1/3 of the bone
shoulder separation is also known as?
acromioclavicular joint seperation
what disrupts the coraco-clavicular ligament and leads to the elevation of the upper subluxatoni of the trapezoid
severe trauma
what kind of injury causes the separation of acromio-clavicular
minor injury
shoulder dislocation occurs were
glenohumeral joint
what shoulder dislocation is common
anterior
what two nerves can be damaged if there is a glenohumeral joint
axillary n & radial nerve
what is posterior dislocation associated with
epileptic seizure caused by electrocution
what is usually involved in rotator cuff disorders
supraspinatus
what can impinge the supraspinatus
- muscle swelling
- excess fluid of subacromial bursa
- subacromial bony spurs growing
what are the three things that cause tendinopathy?
- repeated trauma
- tendon degenerates and can tear
- painful arm movemwent
when there is an elevation of medial border of scapula off posterior thoracic wall what is it called
scapular winging
when there is medial or lateral displacement of the scapula along the posterior thoracic wall its called
scapular winging
lateral winging
when the superior border of the scapula will not move medially because the trapezius is paralyzed so it moves laterally
