Exam 1-Diarthrosis Classification

Question 1

What is a simple synovial joint (diarthrosis)?

Answer 1

only one pair of articulating surfaces are observed

Question 2

What is a compound synovial joint (diarthrosis)?

Answer 2

more than two articulating surfaces are present in the same synovial joint

Question 3

What is a complex synovial joint (diarthrosis)?

Answer 3

within the simple joint or the compound joint, the articulating surfaces are seperated by an articular disc (intra-articular) or meniscus

Question 4

What are the classifications of synovial joints (diarthoses) based on type of movemnt?

Answer 4

nonamxail, uniaxail, biaxial and multiaxial synovial joints

Question 5

What movements are accomodated by nonaxial synovial joints?

Answer 5

translational movement, a plane or gliding movement

Question 6

What morphological classification of synovial joints is classified as nonaxial?

Answer 6

plane (diarthrosis arthrodial)

Question 7

What movements are accomodated by uniaxial joints?

Answer 7

a sinlge combination of movements relative to a single axis: flexion - extension or medial rotation - lateral rotation

Question 8

What morphological classifications of synovial joints would be classified as uniaxial?

Answer 8

hinge (diarthrosis ginglymus) and pivot (diarthrosis trochoid)

Question 9

Whatg movements are accomodated by biaxial synovial joints?

Answer 9

movementin two independent planes at right angles to each other: flexion - extension combined with abduction - adduction

Question 10

What morphological classifications of synovial joints would be classified as biaxial?

Answer 10

(diarthrosis) bicondylar, (diarthrosis) condylar, (diarthrosis) ellipsoidal and saddle (diarthrosis sellar)

Question 11

What morphological classifications of synovial joints would be classified as multiaxial?

Answer 11

ball and socket (diarthrosis enarthrosis), (diarthrosis spheroidal), (diarthrosis cotyloid) are all classifications given to the same type of joint

Question 12

What are examples of synovial hinge (diarthrosis ginglymus) joints?

Answer 12

humero-ulnar joint of the elbow and interphalangeal joints of fingers and toes

Question 13

Diarthrosis trochoid joints are commonly called _________ joints based on action

Answer 13

synovial pivot

Question 14

What are examples of synovial pivot (diarthrosis trochoid) joints?

Answer 14

median atlanto-axial joint and proximal radio-ulnar joint

Question 15

What is the shared morphological characteristic of diarthrosis trochoid joints?

Answer 15

an osseous pivot point and an osteo-ligamentous ring

Question 16

What are examples of diarthrosis condylar or diarthrosis bicondylar joints?

Answer 16

temperomandibular joint and femur-tibie joint of the knee

Question 17

What are examples of diarthrosis ellipsoidal joints?

Answer 17

radiocarpal joint of the wrist, metacarpo-phalangeal joints of the hand, metatarsal-phalangeal joints of the foot and the atlanto-occipital joint of the vertebral column

Question 18

Which synovial joint classifications are now often interchanged in textbooks?

Answer 18

ellipsoidal and condylar synovial joints

Question 19

What are examples of synovial saddle (diarthrosis sellar) joints?

Answer 19

carpometacarpal joint of the thumb, talocrual joint of the ankle and the calcaneocuboidal joint of the foot

Question 20

What are examples of diarthrosis cotyloid joints?

Answer 20

femur-acetabulum of the innominate articulation at the hip and the humerus-glenoid cavity of the scapula articulation at the shoulder