Pectoral Girdle

Question 1

how many bones are in the pectoral girdle?

Answer 1

2

Question 2

what is the bone of the clavicle like?

Answer 2

slender, doubly curved

Question 3

what does the clavicle act as?

Answer 3

a brace to hold the arm away from the top of the thorax

Question 4

what does the clavicle prevent?

Answer 4

shoulder dislocation

Question 5

the clavicle articulates with what medially

Answer 5

the sternum

Question 6

the clavicle articulates with what laterally

Answer 6

scapula

Question 7

if the clavicle were to break what would happen?

Answer 7

the whole shoulder caves in medially

Question 8

shoulder blade

Answer 8

scapula

Question 9

what is the bone of the scapula like?

Answer 9

triangular and wing shaped

Question 10

the clavicle and the scapula combine at what

Answer 10

the acromioclavicular joint at the acromion

Question 11

the scapula articulates with the arm at what

Answer 11

glenoid cavity

Question 12

parts of the scapula

Answer 12

caracoid process and suprascapular notch
glenoid cavity

Question 13

what is the function of the coracoid process?

Answer 13

anchors some of the muscle of the arm

Question 14

what is the function of the suprascapular notch?

Answer 14

serves as a nerve passageway

Question 15

points over the top of the shoulder

Answer 15

carocoid process

Question 16

how is the scapula connected to the axial skeleton?

Answer 16

sternoclavicular joint

Question 17

the shoulder girdle allows for what

Answer 17

the joint to slide back and forth against the thorax as muscles act

Question 18

what is the drawback of the shoulder girdle?

Answer 18

very easily dislocated

Question 19

three reasons that the shoulder girdle allows free movement to upper limbs

Answer 19

1. each shoulder girdle attaches to the axial skeleton at the sternoclavicular joint
2. loose attachment of the scapula allows it to slide back and forth against the thorax as muscles act
3. glenoid cavity is shallow, and the shoulder joint is poorly reinforced by ligaments

Question 20

collarbone

Answer 20

clavicle