Upper Limb Flashcards

1
Q

what does the humerus articulate with?

A

scapula - head
ulna - trochlea, coronoid fossa and olecranon fossa
radius - capitulum and radial fossa

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2
Q

where is the humerus located?

A

the humerus is the arm
between pectoral girdle and forearm

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3
Q

where does subscapularis attach to the humerus?

A

lesser tubercle
from scapula - subscapula fossa

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4
Q

what attaches to the lesser tubercle of the humerus?

A

subscapularis

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5
Q

what is the function of subscapularis?

A

medial rotation of the arm and stabilisation

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6
Q

what muscles attach to the greater tubercle of the humerus?

A

supraspinatus
infraspinatus
teres minor

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7
Q

where does supraspinatus attach to the humerus?

A

greater tubercle
from scapula - supraspinous fossa

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8
Q

what is the function of supraspinatus?

A

abduction of arm and stabilisation

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9
Q

where does infraspinatus attach to the humerus?

A

greater tubercle
from scapula - infraspinous fossa

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10
Q

what is the function of infraspinatus?

A

lateral rotation, abduction of arm and stabilisation

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11
Q

where does teres minor attach to the humerus?

A

greater tubercle
from scapula - superior lateral border

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12
Q

what is the function of teres minor?

A

lateral rotation, adduction of arm and stabilisation

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13
Q

what attaches to the medial lip of intertubercular groove of the humerus?

A

teres major

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14
Q

where does teres major attach to the humerus?

A

the medial lip of intertubercular groove
from scapula - inferior angle (dorsal)

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15
Q

what is the function of teres major?

A

medial rotation, adduction and extension of arm

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16
Q

what attaches to the intertubercular groove of the humerus?

A

latissimus dorsi

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17
Q

where does latissimus dorsi attach to the humerus?

A

intertubercular groove
from vertebrae T7-L5 - spinous process, lower ribs and ilium - crest

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18
Q

what is the function of latissimus dorsi?

A

medial rotation, adduction and extension of the arm

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19
Q

where does pectoralis major attach to the humerus?

A

lateral lip of intertubercular groove
from clavicle, anterior -medial and sternum

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20
Q

what muscle attached to the lateral lip of intertubercular groove of the humerus?

A

pectoralis major

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21
Q

what is the function of pectoralis major?

A

medial rotation, adduction and flexion of arm

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22
Q

where does deltoid attach to the humerus?

A

deltoid tuberosity
from clavicle - anterior lateral, scapula - lateral acromion and lower border of spine

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23
Q

what is the function of deltoid?

A

flexion, extension, rotation and abduction of arm

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24
Q

what muscle attaches to the deltoid tuberosity of the humerus?

A

deltoid

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25
Q

what attaches to the distal anterior diaphysis of the humerus?

A

brachialis

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26
Q

where does brachialis attach to the humerus?

A

distal anterior diaphysis
to ulna - coronoid process and tuberosity

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27
Q

what is the function of brachialis?

A

flexion of the forearm

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28
Q

what attaches to the posterior diaphysis of the humerus?

A

triceps brachii

29
Q

where does triceps brachii attach to the humerus?

A

posterior diaphysis
also scapula - infraglenoid tubercle
to ulna - olecranon

30
Q

what is the function of triceps brachii?

A

extension of forearm and adduction

31
Q

what attaches to the lateral supracondylar ridge of the humerus?

A

brachioradialis

32
Q

where does brachioradialis attach to the humerus?

A

lateral supracondylar ridge
to radius - styloid process

33
Q

function of brachioradialis?

A

flexion of the forearm

34
Q

what attaches to the lateral epicondyle of the humerus?

A

supinator

35
Q

what is the function of supinator?

A

supination of the forearm

36
Q

what attaches to the medial epicondyle of the humerus?

A

pronator teres

37
Q

where does pronator teres attach to the humerus?

A

medial epicondyle
also ulna - coronoid process
to radius - lateral diaphysis

38
Q

where does supinator attach to the humerus?

A

lateral epicondyle
also the ulna - supinator crest
to radius - lateral proximal diaphysis

39
Q

what is the function if pronator teres?

A

pronation and flexion of the forearm

40
Q

what are the non-metric traits of the humerus?

A

septal aperture - opening between olecranon and coronoid fossae ~2-11% of individuals.
supracondylar process - spur of bone above medial epicondyle on supracondylar ridge

41
Q

what is the longest bone in the upper limb?

A

humerus

42
Q

what is the shortest bone in the upper limb?

A

radius

43
Q

what are the non-metric traits of the radius?

A

there are no commonly cited non-metric traits

44
Q

what does the radius articulate with?

A

humerus - head
ulna - ulna notch, head
lunate - medial distal surface
scaphoid - lateral distal surface

45
Q

what attaches to the radial tuberosity of the radius?

A

biceps brachii

46
Q

where does biceps brachii attach to the radius?

A

radial tuberosity
from scapula - supraglenoid tubercle and coracoid process

47
Q

what is the function of biceps brachii?

A

flexion of the forearm

48
Q

what attaches to the proximal lateral-posterior diaphysis of the radius?

A

supinator

49
Q

where does supinator attach to the radius?

A

proximal lateral-posterior diaphysis
from ulna - supinator crest and humerus - lateral epicondyle

50
Q

what attaches to the pronator crest/tuberosity of the radius?

A

pronator teres

51
Q

where does pronator teres attach to the radius?

A

pronator crest
from humerus - medial epicondyle and ulna - medial

52
Q

where does pronator quadratus attach to the radius?

A

posterior, extensor grooves for extensor muscles
distal anterior diaphysis

53
Q

what is the function of pronator quadratus?

A

forearm and hand pronation

54
Q

where does brachioradialis attach to the radius?

A

area superior to styloid process
from humerus - lateral supracondylar ridge

55
Q

what is the function of brachioradialis?

A

flexion of the forearm

56
Q

where does the ulna articulate?

A

humerus - olecranon
radius - radial notch, head

57
Q

what are the non-metric traits of the ulna?

A

trochlear notch shape

58
Q

what does the ulna not articulate with the carpals?

A

it provides greater rotation of the hand and radius around the ulna than is observed in many other mammals

59
Q

what attaches to the olecranon process of the ulna?

A

triceps brachii

60
Q

where does triceps brachii attach to the ulna?

A

olecranon
from humerus - radial sulcus, scapula - infraglenoid tubercle

61
Q

what attaches to the coronoid process of the ulna?

A

brachialis

62
Q

where does brachialis attach to the ulna?

A

coronoid process
from humerus - inferior anterior diaphysis

63
Q

what attaches to the medial border of the ulna?

A

pronator teres

64
Q

where does pronator teres attach to the ulna?

A

medial border
also from humerus - medial epicondyle
to radius - diaphysis

65
Q

what attaches to the supinator crest of the ulna?

A

supinator

66
Q

where does supinator attach to the ulna?

A

supinator crest
also from humerus - lateral epicondyle
to radius - diaphysis

67
Q

where does pronator quadratus attach to the ulna?

A

line on distal anterior and medial diaphysis
to radius - distal

68
Q

where does extensor carpi ulnaris attach to the ulna?

A

notch on posterior distal end - lateral to styloid process
to 5th metacarpal

69
Q

what is the function of extensor carpi ulnaris?

A

hand extension