pectoral girdle

Question 1

features of the clavicle

Answer 1

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

Question 2

function of the clavicle

Answer 2

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

Question 3

inferior surface of the clavicle

Answer 3

acromial end
trapezoid line
conoid tuberosity
subclavian sulcus 
costal tuberosity 
sternal end

Question 4

superior surface of the clavicle

Answer 4

muscle attachments

Question 5

attachments on the inferior clavicle (5)

Answer 5

costoclavicular ligament
pectoralis major
sternohyoid
conoid ligament
subclavius

Question 6

attachments on the superior clavicle (3)

Answer 6

trapezius
sternocleidomastoid
deltoid

Question 7

attachments of costoclavicular ligament

Answer 7

costal tuberosity to 1st rib

Question 8

attachments and function of pectorals major

Answer 8

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

Question 9

attachments and function of sternohyoid

Answer 9

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

Question 10

attachments of conoid ligament

Answer 10

conoid process of scapula to conoid tubercle of clavicle

Question 11

attachments and function of subclavius

Answer 11

1st rib to subclavian groove of clavicle

depress clavicle

Question 12

attachments and function of trapezius

Answer 12

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

Question 13

attachments and function of sternocleidomastoid

Answer 13

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

Question 14

attachments and function of deltoid

Answer 14

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

Question 15

non-metric traits

Answer 15

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

Question 16

clavicular trauma

Answer 16

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

Question 17

features of hyoid bone

Answer 17

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

Question 18

muscles on anterior inferior body of hyoid bone

Answer 18

digastric
stylohyoid
mylohyoid

Question 19

attachments and function of digastric

Answer 19

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

Question 20

attachments and function of stylohyoid

Answer 20

hyoid to styloid process on temporal

tongue elevation

Question 21

attachments and function of mylohyoid

Answer 21

mylohyoid line of mandible to hyoid

raise floor of mouth and tongue

Question 22

basics of scapula

Answer 22

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

Question 23

features of scapula

Answer 23

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

Question 24

surfaces, angles and borders of the scapula

Answer 24

subscapular fossa
supraspinous fossa
infraspinous fossa

superior and inferior angle

medial, lateral and superior border

Question 25

acromion muscles

Answer 25

deltoid | trapezius

Question 26

glenoid and coracoid muscles

Answer 26

biceps brachii triceps brachii pectoralis minor

Question 27

anterior surface muscles

Answer 27

subscapularis

Question 28

posterior surface muscles

Answer 28

supraspinous | infraspinous

Question 29

lateral border muscles

Answer 29

teres minor | teres major

Question 30

attachments and function of biceps brachii

Answer 30

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

Question 31

attachments and function of triceps brachii

Answer 31

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

Question 32

attachments and function of pectorals minor

Answer 32

ribs 3-5 to coracoid process | scapula forward and downward

Question 33

attachments and function of subscapularis

Answer 33

subscapular fossa of scapula to lesser tubercle of humerus | stabilisation of shoulder and medial rotation

Question 34

attachments and function of supraspinatus

Answer 34

supraspinous fossa of scapula to greater tubercle of humerus | abduction of arm and stabilisation

Question 35

attachments and function of infraspinatus

Answer 35

infraspinous fossa of scapula to greater tubercle of humerus | abduction and lateral rotation of arm

Question 36

attachments and function of teres minor

Answer 36

lateral border of scapula to greater tubercle of humerus | lateral rotation, adduction and stabilisation of shoulder

Question 37

attachments and function of teres major

Answer 37

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