Upper Limb Flashcards
what does the humerus articulate with?
scapula - head
ulna - trochlea, coronoid fossa and olecranon fossa
radius - capitulum and radial fossa
where is the humerus located?
the humerus is the arm
between pectoral girdle and forearm
where does subscapularis attach to the humerus?
lesser tubercle
from scapula - subscapula fossa
what attaches to the lesser tubercle of the humerus?
subscapularis
what is the function of subscapularis?
medial rotation of the arm and stabilisation
what muscles attach to the greater tubercle of the humerus?
supraspinatus
infraspinatus
teres minor
where does supraspinatus attach to the humerus?
greater tubercle
from scapula - supraspinous fossa
what is the function of supraspinatus?
abduction of arm and stabilisation
where does infraspinatus attach to the humerus?
greater tubercle
from scapula - infraspinous fossa
what is the function of infraspinatus?
lateral rotation, abduction of arm and stabilisation
where does teres minor attach to the humerus?
greater tubercle
from scapula - superior lateral border
what is the function of teres minor?
lateral rotation, adduction of arm and stabilisation
what attaches to the medial lip of intertubercular groove of the humerus?
teres major
where does teres major attach to the humerus?
the medial lip of intertubercular groove
from scapula - inferior angle (dorsal)
what is the function of teres major?
medial rotation, adduction and extension of arm
what attaches to the intertubercular groove of the humerus?
latissimus dorsi
where does latissimus dorsi attach to the humerus?
intertubercular groove
from vertebrae T7-L5 - spinous process, lower ribs and ilium - crest
what is the function of latissimus dorsi?
medial rotation, adduction and extension of the arm
where does pectoralis major attach to the humerus?
lateral lip of intertubercular groove
from clavicle, anterior -medial and sternum
what muscle attached to the lateral lip of intertubercular groove of the humerus?
pectoralis major
what is the function of pectoralis major?
medial rotation, adduction and flexion of arm
where does deltoid attach to the humerus?
deltoid tuberosity
from clavicle - anterior lateral, scapula - lateral acromion and lower border of spine
what is the function of deltoid?
flexion, extension, rotation and abduction of arm
what muscle attaches to the deltoid tuberosity of the humerus?
deltoid
what attaches to the distal anterior diaphysis of the humerus?
brachialis
where does brachialis attach to the humerus?
distal anterior diaphysis
to ulna - coronoid process and tuberosity
what is the function of brachialis?
flexion of the forearm