Ch 4 Appendicular Skeleton/Joints

Question 1

the appendicular skeleton contains

Answer 1

pectoral girdle, upper extremities, pelvic girdle, and lower extremities.

Question 2

pectoral griddle

Answer 2

attaches UE to the axial skeleton
articulates with sternum and vertebral column
consist of clavicle and scapula

Question 2

Upper extremity (UE)

Answer 2

the arm
consist of humerus, ulna, radius, carpals, metacarpals, phalanges

Question 3

Pelvic girdle

Answer 3

called os coxae, innominate bone, hipbone
attaches LE to axial skeleton
articulate with sacrum posteriorly
consist of ilium, ischium, pubis

Question 4

Lower extremity (LE)

Answer 4

the leg
consist of :
femur (thigh bone)
patella (knee cap)
tibia (shin bone)
fibula (lower leg bone)
tarsals (ankle bone)
metatarsals (foot bone)
phalanges (toe bones)

Question 5

joints

Answer 5

formed where 2 bones meet
also called articulation

Question 6

synovial joint

Answer 6

freely moving joint
most common
contain capsule lined with lubricant secreting synovial membrane. some contain bursa, a sac like structure
i.e ball and socket joint

Question 7

cartilaginous joint

Answer 7

allows slight movement
hold bones firmly in place with solid piece cartilage
i.e pubic symphysis (allows pelvis to widen during birth)

Question 8

fibrous joint

Answer 8

allow no movement
joined by thick fibrous tissue that can fuse into bone
i.e sutures of the skull

Question 9

bones are held together by?

Answer 9

ligaments or strong bands of connective tissue