Lecture 4

Question 1

what bones does the pectoral girdle consist of? (2)

Answer 1

clavicle and scapula

Question 2

clavicle - superior view

Answer 2

acromial/lateral end
- articulates with
acromion of scapula
- projects forwards more
- lateral 1/3 –> concave
anteriorly
sternal/medial end
- articulates with
sternum
- medial 2/3 –> convex
anteriorly

Question 3

clavicle - inferior view

Answer 3

conoid tubercle - rough inferior surface projection which is the attachment sites for muscles and ligaments

Question 4

Sternoclavicular joint

Answer 4

clavicle with sternum via clavicular notch of manubrium (top portion of sternum)

Question 5

border of scapula (3)

Answer 5

superior border: top
medial border: side closest to midline
lateral border: side closest to side of body (on an angle)

Question 6

fossas of scapula (3)

Answer 6

anterior view: subscapular fossa
posterior view: supraspinous fossa (above spine of scapula)
infraspinous fossa (below spine of scapula)

Question 7

features - anterior scapula

Answer 7

acromion: articulates with lateral end of clavicle, larger process, posterior
coracoid process: smaller process, anterior

Question 8

features - posterior scapula (2)

Answer 8

spine of scapula
acromion (at medial tip of spine of scapula)

Question 9

features - lateral scapula

Answer 9

acromion
coracoid process
glenoid fossa/cavity: forms shoulder joint with humerus

Question 10

glenohumeral joint

Answer 10

glenoid fossa and humerus
ball and socket joint
protected by bursae

Question 11

acromioclavicular joint

Answer 11

acromion and clavicle (lateral end)… connects clavicle and scapula
acromioclavicular ligament

Question 12

featues proximal humerus - anterior (4)

Answer 12

left to right. –>
greater tubercle, intertubercular groove, lesser tubercle, head

Question 13

featues proximal humerus - posterior (2)

Answer 13

top to bottom –>
anatomincal neck, head, surgical neck

Question 14

shaft of humerus

Answer 14

shaft is long middle part
deltoid tubersoity (only seen on anterior side)

Question 15

featues distal humerus - anterior (3)

Answer 15

lateral to medial –>
capitulum (round part), trochlea… together these make up the condyle (rounded knob that articluates with other bone)

Question 16

featues distal humerus - posterior

Answer 16

trochlea

Question 17

fossae of distal humerus - anterior (2)

Answer 17

radial fossa (above capitulum), coronoid fossa (about trochlea)

Question 18

fossae of distal humerus - posterior

Answer 18

olecranon fossa (above trochlea)

Question 19

bony prominences of distal humerus (2)

Answer 19

lateral epidondyle, medial epicondyle (bump on medial side of elbow)

Question 20

Components of radius - proximal anterior

Answer 20

top to bottom –> head, neck, radial tuberosity (attachment site for biceps brachii)

Question 21

components of ulna - proximal anterior

Answer 21

top to bottom –> olecranon, trochlear notch, coronoid process, radial notch

Question 22

components of ulna - proximal posterior

Answer 22

olecranon

Question 23

olecranon (2)

Answer 23

stops over extension of elbow
projects into olecranon fossa on posterior humerus
pointy part of elbow when performing flexion

Question 24

what does the trochlear notch articulate with?

Answer 24

articluates with trochlea of humerus

Question 25

what does the radial notch articulate with and what joint does it form?

Answer 25

articulates with head of radius
forms proximal radio-ulnar joint

Question 26

coronoid process (2)

Answer 26

stops over flexion of elbow
projects into coronoid fossa on anterior humerus