7)Joints MCQ Only In Midterm

Question 1

Degree of mobility for fibrous joints

Answer 1

Immovable/ synarthrodial joints (MCQ)

Question 2

Degree of mobility for cartilaginous joints

Answer 2

partially movable/ amphiarthrodial joint (MCQ)

Question 3

Degree of mobility for synovial joints

Answer 3

Freely movable/ diarthrodial joints (MCQ)

Question 4

What are the two classification for joints

Answer 4

Structural features& degree of mobility

Question 5

***Structural features of joints (always ask in exam) diagram

Answer 5

refer to notes (joints) page 3

Question 6

4 types of fibrous joints

Answer 6

Sutures
schindylesis
syndesmosis
gomphosis

Question 7

Fibrous joints are found between where?

Answer 7

between 2 bones of intra-membranous origin

Question 8

Comparison between primary cartilaginous joint and secondary cartilaginous joint

Answer 8

primary cartilaginous joint Secondary cartilaginous joint
(eg. intervertebral joint)

Bones are connected by Bones are covered by hyaline
hyaline cartilage cartilage and connected by
fibrocartilage

immovable slightly movable

disappear with age do not disappear with age

Rarely occurs in midline Always occurs in midline

Question 9

5 types of sutures

Answer 9

1) Squamous sutures
2) Sutura limbosa
3) Serrated sutures
4) Denticulate suture
5) Plan suture

Question 10

Sutures

Answer 10

Found only between the bones of the skull

foetal skull (胎儿头骨) the suture are wide apart to allow slight degree of movement between skull bones during the passage through the birth canal

after birth suture become quit rigid over period of time, allowing no more movement at articulating bones (关节骨)

Question 11

Squamous suture

Answer 11

articulating bones simply overlap obliquely

location: temporal& parietal bones

Question 12

Sutura limbosa

Answer 12

overlapping edges (重叠的边缘) are ridged or serrated (锯齿状)

location: temporal& parietal bones

Question 13

Location of serrated sutures

Answer 13

sagittal suture

Question 14

Denticulate suture

Answer 14

Margins present a tooth-like processes

location: lambdoid suture

Question 15

Plane suture

Answer 15

two flat surfaces are in contact

eg- palatine processes of the maxilla

Question 16

Schindylesis

Answer 16

tongue& groove type of joint

Question 17

Syndesmosis

Answer 17

partially movable fibrous joint

persist throughout life

united by inter-osseous membrane

Question 18

Gomphosis

Answer 18

peg& socket articulation

location: between roots of the teeth
alveolar process of jaw bones

Question 19

What does periodontal ligament (PDL) do

Answer 19

Anchor the tooth securely in socket

Question 20

Synovial joint ** (IMPORTANT for exam) diagram

Answer 20

Joints page16

Question 21

Three type of joints

Answer 21

Fibrous joint
Cartilaginous joint
Synovial joints

Question 22

5 characteristic features of synovial joints

Answer 22

1. The articular surface
2. Joint cavity
3. Capsular ligament
4. Synovial membrane
5. Disc

Question 23

The articular surface

Answer 23

opposite of bone are cover by hyaline cartilage

avascular& alymphatic

Question 24

Joint cavity

Answer 24

Space that always exist between the articular surfaces of the opposing bones

Question 25

Capsular ligament

Answer 25

completely enclose joint cavity

run in all direction to resist torsion& twisting

some are thickened to form ligament of joint, usually strong ligament are at the side of joint

Question 26

Synovial membrane

Answer 26

Secret oily fluid- Synovium

not line in articular surface

lines the inner surface of joints and part of the bone within the joint

Question 27

Disc allow which 2 types of joints to move

Answer 27

Temporo-mandibular joint& knee joint

Question 28

Where anterior fontanelle form? (MCQ)

Answer 28

frontal and parietal

Question 29

Most commonly dislocated joint in body (MCQ)

Answer 29

Shoulder (adults)
Pulled elbow (children)

Question 30

Inflammation of one or more joints is called? (MCQ)

Answer 30

Arthritis

Question 31

Definition of dislocation of joint (exam)

Answer 31

End of the bones gets out of its socket

Question 32

Hinge also known as? (MCQ)

Answer 32

Ginglymus joint

Question 33

Disc function

Answer 33

ensure perfect contact between moving surface in any direction

helps to maintain perfect lubrication

Question 34

Classification of synovial joint (According to the number of articulating surfaces)

Answer 34

simple- only one pair of articulating surface
eg. joints of fingers

compound- more than one pair of articulating surface
eg. elbow joint

complex- partially or completely divided by disc or menicus
eg. knee joint, temporo-mandibular joint

Question 35

Classification of synovial joint (According to the number of axes)

Answer 35

1) Uniaxial joint- axis may be vertical or horizontal
one degree of freedom
eg. pivot joint (vertical axis) , hinge joint (horizontal axis)

2) BI-axial joints- 2 axes which are at mutual right angles
2 degrees of freedom
eg. saddle joint, ellipsoidal joint

3) Multi-axial joints- 3 degrees of freedom
Axes in all planes
Eg. ball& socket joint

Question 36

Classification of synovial joint (According to the shape of articulating surfaces)

Answer 36

1) Plane joints
2) Hinge/ Ginglymus joint
3) Pivot joints
4) Ellipsoidal joints
5) Saddle joints
6) Ball& socket joint
7) Condyloid joint

Question 37

***Factor that maintain the stability of synovial joints (Exam)

Answer 37

1) Muscle- maintaining the stability

2) Ligament- prevent over movement

3) Bones- maintaining the stability in firm type of joints

Question 38

Plane joint

Answer 38

uni-axial with 1 degree of freedom

Opposing surface is almost flat

permit gliding or sliding movement

eg. intercarpal joints

Question 39

Hinge (ginglymus joint)

Answer 39

Uniaxial with 1 degree of freedom

Opposing surface is slightly convex and other slightly concave

permits flexion& extension

eg. elbow joint, interphalangeal joints

Question 40

Pivot joint

Answer 40

Uniaxial with 1 degree of freedom

Opposing bone is encircled at the joint end by fibrous ring or cuff, enable the bone to rotate

Allow medial rotation& lateral rotation

Allow side to side movement in atlanto-axial

Eg. radio-ulnar joint

Question 41

Ellipsoidal joint

Answer 41

Bi-axial with 2 degree of freedom

resembles ball& socket joint, but the articulating surfaces are longer in one direction than the other

Allow flexion, extension, adduction& abduction

Eg. wrist joint

Question 42

Saddle joint

Answer 42

opposing surfaces are reciprocally curved in a saddle shape

Bi-axial joint and allow movement in 2 planes

Allow flexion, extension, adduction& abduction

Eg. Carpo-metacarpal joint of the thumb

Question 43

Ball and socket joint

Answer 43

Opposing surface is ball shaped and others is reciprocal socket

multiaxial with 3 degree of freedom allow movement in all planes

Allow flexion& extension; adduction& abduction; Rotation& circumduction

Eg. shoulder joint& hip joint

Question 44

Condyloid joint

Answer 44

modified hinge (one direction ) joint

Eg. knee joint

Question 45

Term of joint disorder

Answer 45

Arthropathy

Question 46

A small telescope

Answer 46

Arthroscopy

Question 47

Gout is caused by what

Answer 47

too much uric acid in the blood

Mainly involve in joints or foot

Question 48

Comparison between Osteoarthritis and Rheumatoid arthritis

Answer 48

Osteoarthritis Rheumatoid arthritis

Nature of Degenerative and Degenerative and autoimmune
disease inflammatory

Tissue Articular cartilage Synovial membrane
affected

Joints Weight bearing, e.g. Small joints of
affected hip, knee, joints of cervical hands and feet
and lumbar spine

                   regeneration is not possible
                   because of avascular