7.4 pectoral girdle

Question 1

the pectoral girdles attach the __ to the __

Answer 1

upper limbs, axial skeleton

Question 2

clavicles/collarbones

Answer 2

slender, s-shaped bones that can be felt along their entire course as they extend horizontally across the superior thorax

Question 3

the clavicles:

Answer 3

hold the scapulae and arms out laterally

Question 4

sternal end

Answer 4

rounded end of the clavicle that articulates with the manubrium of the sternum

Question 5

acromial end

Answer 5

flattened end of the clavicle that articulates with the acromion of the scapula

Question 6

the medial 2/3 of the clavicle is

Answer 6

convex anteriorly

Question 7

the lateral 1/3 of the clavicle is

Answer 7

concave anteriorly

Question 8

the superior surface of the clavicle is

Answer 8

smooth

Question 9

the interior surface of the clavicle is

Answer 9

ridged and grooved by ligaments and by the action of the muscles that attach to it

Question 10

scapulae/shoulder blades

Answer 10

thin, triangular flat bones

Question 11

the scapulae lie:

Answer 11

on the dorsal surface of the rib cage, between ribs 2 and 7

Question 12

superior border of the scapulae

Answer 12

shortest, sharpest border

Question 13

medial/vertebral border of the scapulae

Answer 13

parallels the vertebral column

Question 14

lateral/axillary border of the scapulae

Answer 14

thick, next to the armpit, ends superiorly in the glenoid cavity

Question 15

glenoid cavity

Answer 15

articulates with the humerus, forms the shoulder joint

Question 16

superior angle of the scapulae

Answer 16

superior scapular border meets the medial border

Question 17

lateral angle of the scapulae

Answer 17

superior scapula border meets the lateral border

Question 18

inferior angle of the scapulae

Answer 18

the medial border meets the lateral border

Question 19

acromioclavicular joint

Answer 19

acromion articulates with the acromial end of the clavicle

Question 20

coracoid process

Answer 20

projecting anteriorly from the superior scapular border
-helps anchor the bicep muscle of the arm

Question 21

suprascapular notch

Answer 21

nerve passage that bounds the coracoid process and the glenoid cavity

Question 22

infraspinous and supraspinous fossae

Answer 22

inferior and superior to the spine

Question 23

subscapular fossa

Answer 23

shallow concavity formed by the entire anterior scapular surface