7-3. Appendicular Skeleton - upper

Question 1

appendicular skeleton

Answer 1

126 bones of the appendages and the girdles that attach them to the axial skeleton

Question 2

pectoral girdle

Answer 2

shoulder - attaches the upper limb to the axial skeleton; 2 bones each side

Question 3

What bones make up the pectoral girdle?

Answer 3

scapula and clavicle

Question 4

clavicle

Answer 4

2 s-shaped bones that lie horizontally in the anterior thorax, superior to first rib. anchors muscles and acts as a brace to hold the arms out laterally

Question 5

What is the most frequently broken bone in the body?

Answer 5

clavicle

Question 6

The cone-shaped sternal end of the clavicle articulates medially with the __ and flat, acromial end articulates laterally with the __.

Answer 6

manubrium; scapula

Question 7

scapula

Answer 7

2 large triangular flat bones lying on the dorsal surface of the rib cage, covering ribs 2-7. has three borders: superior, medial and lateral

Question 8

acromion

Answer 8

the large process at the end of the spine that articulates laterally with the clavicle

Question 9

glenoid cavity

Answer 9

depression below acromion which articulates with head of humerus to form shoulder joint

Question 10

upper limb

Answer 10

30 bones in each

Question 11

humerus

Answer 11

sole bone of arm - a typical long bone

Question 12

The head (__ end) of the humerus articulates with the ___ at the ____ cavity; the distal end articulates with the ___ and ___ at the elbow joint

Answer 12

proximal; scapula; glenoid; radius; ulna

Question 13

greater and lesser tubercle

Answer 13

sites of attachment for rotator cuff muscle

Question 14

medial epichondyle

Answer 14

ulnar nerve runs behind this (“funny bone”)

Question 15

ulna

Answer 15

medial bone of the forearm

Question 16

olecranon

Answer 16

large process at proximal end, locks into olecranon fossa of humerus when arm is straight

Question 17

trochlear notch

Answer 17

deep U-shaped groove into which the trochlea of the humerus fits, forming the hinge like elbow joint

Question 18

the head of the ulna (___ end) articulates with the ___.

Answer 18

distal; carpals

Question 19

radius

Answer 19

thin, lateral bone of the forearm

Question 20

The head of radius (__ end) articulates with the ___.

Answer 20

proximal; humerus and ulna

Question 21

The distal end of the radius articulates with the _____ and with ____.

Answer 21

distal end of ulna; two carpals forming the wrist

Question 22

Colle’s fracture

Answer 22

breaking distal end of radius (“wrist”)

Question 23

had bones

Answer 23

each hand contains 27 bones in three groups

Question 24

carpals

Answer 24

8 short bones of the wrist, arranged in 2 irregular rows of 4 and united to each other by ligaments.

Question 25

carpal tunnel

Answer 25

ligament over the anterior surface in which the median nerve and tendons run. overuse of the tendons causes them to swell (carpal tunnel syndrome)

Question 26

metacarpals

Answer 26

5 long bones of the palm; the distal heads are called knuckles

Question 27

phalanges

Answer 27

14 long bones of the fingers; 2 in the pollux and 3 in each of the other fingers (proximal, middle, and distal)