Articulations Flashcards
True or False:
All cartilaginous joints are diarthrotic? (Freely movable)
True
The sacrum in an adult can be functionally classified as:
Synarthrosis [immovably fixed joint]
the fluid filled sacs cushioning synovial joints are:
bursae
structural joint classification
according to presence of tissue between articulating bones
bony fusion
articulating bones fused together and become immovable, synarthrotic joints; such as in coxal bones which fuse around age 12-20
fibrous joints
Dense CT between articulating bones
can be immovable or slightly movable
ex) between cranial sutures, sacrum, and coxal
cartilaginous bones
separated by cartilage (fibro or hyaline)
can be movable (epiphyseal plates of bones) or immovable (discs between vertebral joints)
synovial joints
have synovial fluid-filled joint cavity lined with synovial membrane
-highly moveable : glenohumeral, sternoclavicular, coxal femoral
functional joint classification
according to the degree of movement allowed between articulating bones
synarthrotic joints
2 bones with immovable position in relation to eachother
ex) suture, teeth/jaw bones..
amphiarthrotic joints
2 bones with slightly movable positions in relation to eachother
ex) pubic symphasis, fibia and tibia fibrous connection
diarthrotic joints
2 bones with freely movable positions in relation to eachother
[all synovial joints]
ex) elbow, shoulder
interverbretal discs
& what are they composed of?
permit smooth gliding motions of vertebral column during flex, extension, rotation..
composed of
1) annulus fibrosus (soft disc center)
2) nucleus pulposas (shock absorber)
Label A, B, and C
a: interverbretal disc
b: annulus fibrosus
c: nucleus pulposas
Identify A and B
A: posterior longitudinal ligament
B: anterior longitudinal ligament
identify A and B
A: interspinous ligament
B: supraspinous ligament
identify this joint
knee joints (tibiofemoral joint)
extracapsular ligaments include the:
quadriceps tendon/ patellar ligament
tibial collateral ligament (medial collateral ligament MCL)
fibular collateral ligament (lateral collateral ligament LCL)
identify A and B
A: quadriceps tendon
B: patellar ligament
identify C
medial (tibial) collateral ligament - MCL
identify D
lateral (fibular) collateral ligament LCL
intracapsular ligaments
set of 2 ligaments - anterior and posterior cruciate ligaments (ACL, PCL)
identify A
anterior cruciate ligament (ACL)
[posterior knee] identify A
posterior cruciate ligament (PCL)
meniscus (medial and lateral)
fibrocartilage disc/pad that helps to shape the knee joint / help fit the femur and tibia fit together
identify B
medial meniscus
identify c
medial meniscus
Bursa
synovial membrane- sac with synovial fluid that helps increase padding and reduce rubbing
identify A
suprapatellar bursae
identify A
infrapatellar fat pad
ankle joint (talocrural joint)
tibia, fibula, and talus join
tibiofibular joint (high ankle joint)
What kind of joint is it specifically?
fibrous amphiarthrotic joint
-above talus
identify A
anterior and posterior tibiofibular ligaments
identify where it is pointing
interosseous membrane
talocrural joint (low ankle joint)- what kind of joint is it more specifically?
synovial hinge joint
identify A and B
anterior and posterior talofibular ligaments
identify C
calcaneofibular ligament
identify A (inner foot)
medial/deltoid ligament
glenohumeral joint
shoulder joint; diarthrotic ball and socket joint
-most frequently dislocated
glenoid labrum
fibrocartilage supporting structure around the glenoid
identify A
coracoacromial ligament
identify B
acromioclavicular ligament
identify C
coracoclavicular ligaments
Shoulder muscles “SITS”
supraspinatus
infraspinatus
teres minor
subscapularis
identify A, B, C
supraspinatus
infraspinatus
teres minor
B
biceps brachii tendons
A
triceps brachii tendons
Decreasing the angle between bones is called:
flexion
The joint that permits the greatest range of mobility of any joint in the body is the:
shoulder
The joint that permits the greatest range of mobility of any joint in the body is the:
shoulder
Which ligament(s) prevent backward displacement of the tibia or forward sliding of the femur?
cruciate (ACL)
Synovial fluid functions :
lubrication
shock absorption
protect articular cartilages
opposition is only possible at the :
thumb
________ has a joint cavity
the knee
The primary stabilizing structure(s) of the shoulder joint is/are:
the tendons of the “rotator cuff” muscles
If you straighten your leg at the knee to kick a soccer ball, you are performing:
extension of the leg at the knee
The intervertebral articulations include both ________ and _________ joints.
cartilagenous and synovial
most mobile joint are-
ball and socket joints
most mobile joint are-
ball and socket joints
identify a
acromioclavicular ligament
identify b
coracoacromial ligament
identify c
coracoclavicular ligament
identify the muscle
subscapularis