4.2 Anatomy of the Skeleton Part II: The Appendicular Skeleton

Question 1

What is the appendicular skeleton?

Answer 1

consists of the bones of the pectoral and pelvic girdles and the attached limbs

Question 2

What are the pectoral girdle and upper limbs specialized for?

Answer 2

flexibility and increased range of motion

Question 3

What are the pelvic girdles and lower limbs specialized for?

Answer 3

strength

Question 4

What is the pectoral girdle composed of?

Answer 4

two clavicles and two scapulae

Question 5

Where do the clavicles connect?

Answer 5

sternum anteriorly

Question 6

Where do the scapulae connect?

Answer 6

to the sternum posteriorly

Question 7

Which part of the pectoral girdle is freely movable?

Answer 7

scapula

Question 8

How is the scapula physically connected?

Answer 8

by muscles and ligaments

Question 9

What does the posterior side of the scapula contain?

Answer 9

supraspinatus fossa
infraspinatus fossa
scapular spine

Question 10

Where is the acromion process located?

Answer 10

projects from the scapular spine connects to the clavicle anteriorly

Question 11

What contains the glenoid cavity?

Answer 11

the neck of the scapula

Question 12

What is the glenoid cavity?

Answer 12

where the head of the humerus articulates with the scapula

Question 13

What does the anterior of the scapula contain?

Answer 13

subscapular fossa

Question 14

Where is the coracoid process located?

Answer 14

projects anteriorly from the scapula

Question 15

What is the purpose of the coracoid process?

Answer 15

allows for muscle attachment

Question 16

What is the single long bone in the upper arm?

Answer 16

humerus

Question 17

Where does the humerus connect to on the scapula?

Answer 17

glenoid cavity

Question 18

What holds the head of the humerus to to glenoid cavity?

Answer 18

rotator cuff muscles and ligaments

Question 19

Why is the gleno-humeral joint prone to dislocation?

Answer 19

because it is held in place primarily by muscular and ligament attachment with little bony stability

Question 20

What is dislocation of a joint?

Answer 20

when bone is removed from its socket