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Forensic Osteology > pectoral girdle > Flashcards

pectoral girdle Flashcards

1
Q

features of the clavicle

A

S shape
sternal end round, acromial end flat
superior surface smooth, inferior surface topography

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2
Q

function of the clavicle

A

increase range of movement at the shoulder
transmits supportive stress to upper limb
protects auxillary neurovascular bundle

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3
Q

inferior surface of the clavicle

A 
acromial end
trapezoid line
conoid tuberosity
subclavian sulcus 
costal tuberosity 
sternal end
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4
Q

superior surface of the clavicle

A

muscle attachments

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5
Q

attachments on the inferior clavicle (5)

A 
costoclavicular ligament
pectoralis major
sternohyoid
conoid ligament
subclavius
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6
Q

attachments on the superior clavicle (3)

A

trapezius
sternocleidomastoid
deltoid

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7
Q

attachments of costoclavicular ligament

A

costal tuberosity to 1st rib

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8
Q

attachments and function of pectorals major

A

sternal angle of clavicle and anterior sternum to lateral lip of intertubercular groove of humerus
adduction, medial rotation and flexion of arm

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9
Q

attachments and function of sternohyoid

A

inside sternal angle and posterior of manubrium of sternum to hyoid bone
depress hyoid

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10
Q

attachments of conoid ligament

A

conoid process of scapula to conoid tubercle of clavicle

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11
Q

attachments and function of subclavius

A

1st rib to subclavian groove of clavicle

depress clavicle

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12
Q

attachments and function of trapezius

A

superior nuchal line to lateral and posterior clavicle and lateral acromion and lower border of spine of scapula of scapula
adduction, elevation, depression and rotation of scapula

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13
Q

attachments and function of sternocleidomastoid

A

medial and posterior clavicle and anterior sternum to mastoid process of temporalis
rotation and flexion of head

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14
Q

attachments and function of deltoid

A

lateral and anterior clavicle and lateral acromion and lower border of spine of scapula to deltoid tuberosity of humerus
flexion, extension, adduction and rotation of arm

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15
Q

non-metric traits

A

variation in shape
costal tuberosity/impression
acromial end
position of nutrient foramen

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16
Q

clavicular trauma

A

most frequently fractured bone
occurs at curvatures
can cause damage to subclavian blood vessels
alters shape - shortens

17
Q

features of hyoid bone

A

doesn’t articulate with other bone
attachment of tongue musculature
fractured in manual strangulation
greater and lesser cornu fuse in adulthood

18
Q

muscles on anterior inferior body of hyoid bone

A

digastric
stylohyoid
mylohyoid

19
Q

attachments and function of digastric

A

hyoid to digastric fossa on temporal and inner inferior border of mandible
jaw movement

20
Q

attachments and function of stylohyoid

A

hyoid to styloid process on temporal

tongue elevation

21
Q

attachments and function of mylohyoid

A

mylohyoid line of mandible to hyoid

raise floor of mouth and tongue

22
Q

basics of scapula

A

posterior of the body
suspended by musculature
triangular and concave anteriorly
articulates: humerus - glenoid fossa, clavicle - acromion

23
Q

features of scapula

A 
acromioclavicular facet
coracoid process
suprascapular notch
surgical and anatomical neck
glenoid fossa
glenoid tubercle
acromion
spinoglenoid fossa
spine of scapula
24
Q

surfaces, angles and borders of the scapula

A

subscapular fossa
supraspinous fossa
infraspinous fossa

superior and inferior angle

medial, lateral and superior border

25
Q

acromion muscles

A

deltoid

trapezius

26
Q

glenoid and coracoid muscles

A

biceps brachii
triceps brachii
pectoralis minor

27
Q

anterior surface muscles

A

subscapularis

28
Q

posterior surface muscles

A

supraspinous

infraspinous

29
Q

lateral border muscles

A

teres minor

teres major

30
Q

attachments and function of biceps brachii

A

supraglenoid tubercle and coronoid process of scapula to radial tuberosity of radius
supination and flexion of forearm

31
Q

attachments and function of triceps brachii

A

infraglenoid tubercle of scapula and posterior diaphysis of humerus to olecranon of ulna
extension of forearm

32
Q

attachments and function of pectorals minor

A

ribs 3-5 to coracoid process

scapula forward and downward

33
Q

attachments and function of subscapularis

A

subscapular fossa of scapula to lesser tubercle of humerus

stabilisation of shoulder and medial rotation

34
Q

attachments and function of supraspinatus

A

supraspinous fossa of scapula to greater tubercle of humerus

abduction of arm and stabilisation

35
Q

attachments and function of infraspinatus

A

infraspinous fossa of scapula to greater tubercle of humerus

abduction and lateral rotation of arm

36
Q

attachments and function of teres minor

A

lateral border of scapula to greater tubercle of humerus

lateral rotation, adduction and stabilisation of shoulder

37
Q

attachments and function of teres major

A

lateral border of scapula to medial lip of intertubercular groove of humerus
medial rotation, adduction and extension

Forensic Osteology (14 decks)

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