Appendicular Skeleton (Ch. 7)

Question 1

Appendicular skeleton includes…

Answer 1

1. The pectoral girdle (upper limbs)
2. The pelvic girdle (lower limbs)

Question 2

Number of bones

Answer 2

Entire skeletal system: 206
Axial: 80
Appendicular: 126
- pectoral: 64
- pelvic: 62

Question 3

Pectoral Girdle

Answer 3

Clavicle and Scapula

Question 4

Clavicle

Answer 4

Acromial end (lateral)
- facet with articulation with the acromion
- connects with acromion in the acromioclavicular joint
Sternal end (medial)
- connects to the sternum in the sternoclavicular joint

Question 5

Scapula

Answer 5

2 processes
- coracoid process
- acromion process

Question 6

Upper limb

Answer 6

Humerus, Ulna, Radius, 8Carpal bones, 5 Metacarpal bones, 14 Phalanges

Question 7

Interosseous membrane

Answer 7

fibrous sheet between the ulna and radius

Question 8

Carpal bones

Answer 8

Proximal
- Scaphoid, Lunate, Triquetrum, Pisiform
Distal
- Trapezium, Trapezoid, Capitate, Hamate

Question 9

Metacarpals

Answer 9

I-V from thumb to pinky

Question 10

Phalanges

Answer 10

3 per finger, 2 per thumb
- Proximal, middle, distal

Question 11

Pelvic Girdle

Answer 11

2 Hip bones (coxal bones), sacrum, and coccyx of axial skeleton
- Ilium, Ischium, pubis
-acetabulum

Question 12

Greater pelvis

Answer 12

(false)
From left iliac crest to right iliac crest

Question 13

Lesser pelvis

Answer 13

(true)
Area inferior to the iliopectineal line

Question 14

Pelvic brim

Answer 14

Boney edge of the lesser pelvis

Question 15

Pelvic inlet

Answer 15

superior space between the pelvic brim of each coxal bone

Question 16

Pelvic outlet

Answer 16

inferior space between the ischial space of each coxal bone

Question 17

Lower limb

Answer 17

Femur, tibia, fibula, tarsal bones (7), patella, metatarsals (5), phalanges (14)

Question 18

Tibia

Answer 18

articulates with femur at knee joint (@ lateral tibial epicondyle)

Question 19

Tarsal bones

Answer 19

Calcaneus, Talus, Navicular, Cuboid
Cuneiform bones: Lateral, Intermediate, Medial

Question 20

Talus

Answer 20

second largest, transfers weight of the body anteriorly from the tibia to the toes

Question 21

Calcaneus

Answer 21

Largest, heel bone, pelvis transfers weight
Calcaneus tendon- lifts heel

Question 22

Navicular

Answer 22

medial, articulates with talus

Question 23

Cuboid

Answer 23

articulate with calcaneus

Question 24

Cuneiform bones

Answer 24

wedge shaped, arranged in a row: lateral, intermediate, medial

Question 25

Metatarsals

Answer 25

I-V start medially with big toe

Question 26

Phalanges

Answer 26

14 - each toe has 3 (proximal, middle, distal)
hallux has 2 (proximal/distal)

Question 27

2 arches of the foot

Answer 27

Longitudinal arch - aids in weight transfer (posterior to anterior)
Transverse arch - change in degree of curvature from medial to lateral

Question 28

Flat feet

Answer 28

No longitudinal arch

Question 29

Claw foot

Answer 29

produced by muscular abnormalities
exaggerated median longitudinal arch