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
what attaches to the posterior diaphysis of the humerus?
triceps brachii
where does triceps brachii attach to the humerus?
posterior diaphysis
also scapula - infraglenoid tubercle
to ulna - olecranon
what is the function of triceps brachii?
extension of forearm and adduction
what attaches to the lateral supracondylar ridge of the humerus?
brachioradialis
where does brachioradialis attach to the humerus?
lateral supracondylar ridge
to radius - styloid process
function of brachioradialis?
flexion of the forearm
what attaches to the lateral epicondyle of the humerus?
supinator
what is the function of supinator?
supination of the forearm
what attaches to the medial epicondyle of the humerus?
pronator teres
where does pronator teres attach to the humerus?
medial epicondyle
also ulna - coronoid process
to radius - lateral diaphysis
where does supinator attach to the humerus?
lateral epicondyle
also the ulna - supinator crest
to radius - lateral proximal diaphysis
what is the function if pronator teres?
pronation and flexion of the forearm
what are the non-metric traits of the humerus?
septal aperture - opening between olecranon and coronoid fossae ~2-11% of individuals.
supracondylar process - spur of bone above medial epicondyle on supracondylar ridge
what is the longest bone in the upper limb?
humerus
what is the shortest bone in the upper limb?
radius
what are the non-metric traits of the radius?
there are no commonly cited non-metric traits
what does the radius articulate with?
humerus - head
ulna - ulna notch, head
lunate - medial distal surface
scaphoid - lateral distal surface
what attaches to the radial tuberosity of the radius?
biceps brachii
where does biceps brachii attach to the radius?
radial tuberosity
from scapula - supraglenoid tubercle and coracoid process
what is the function of biceps brachii?
flexion of the forearm
what attaches to the proximal lateral-posterior diaphysis of the radius?
supinator
where does supinator attach to the radius?
proximal lateral-posterior diaphysis
from ulna - supinator crest and humerus - lateral epicondyle
what attaches to the pronator crest/tuberosity of the radius?
pronator teres
where does pronator teres attach to the radius?
pronator crest
from humerus - medial epicondyle and ulna - medial
where does pronator quadratus attach to the radius?
posterior, extensor grooves for extensor muscles
distal anterior diaphysis
what is the function of pronator quadratus?
forearm and hand pronation
where does brachioradialis attach to the radius?
area superior to styloid process
from humerus - lateral supracondylar ridge
what is the function of brachioradialis?
flexion of the forearm
where does the ulna articulate?
humerus - olecranon
radius - radial notch, head
what are the non-metric traits of the ulna?
trochlear notch shape
what does the ulna not articulate with the carpals?
it provides greater rotation of the hand and radius around the ulna than is observed in many other mammals
what attaches to the olecranon process of the ulna?
triceps brachii
where does triceps brachii attach to the ulna?
olecranon
from humerus - radial sulcus, scapula - infraglenoid tubercle
what attaches to the coronoid process of the ulna?
brachialis
where does brachialis attach to the ulna?
coronoid process
from humerus - inferior anterior diaphysis
what attaches to the medial border of the ulna?
pronator teres
where does pronator teres attach to the ulna?
medial border
also from humerus - medial epicondyle
to radius - diaphysis
what attaches to the supinator crest of the ulna?
supinator
where does supinator attach to the ulna?
supinator crest
also from humerus - lateral epicondyle
to radius - diaphysis
where does pronator quadratus attach to the ulna?
line on distal anterior and medial diaphysis
to radius - distal
where does extensor carpi ulnaris attach to the ulna?
notch on posterior distal end - lateral to styloid process
to 5th metacarpal
what is the function of extensor carpi ulnaris?
hand extension