L7: Arthrology Flashcards
1
Q
what is diarthrosis?
A
- free movement of joint
2
Q
what kind of joints can be diarthrosis?
A
- only synovial
3
Q
what do synovial joints consist of?
A
- joint capsule (fibrous and synovial membrane)
- synovial fluid in joint cavity
- articular cartilage
- ligaments
4
Q
in synovial joints, which plane does flexion/ extension occur?
A
- sagittal plane
5
Q
in synovial joints what do flexion and extension do to the joint angle?
A
- flexion decreases the joint angle
- extension increases the joint angle
6
Q
in synovial joints which plane does adduction/abduction occur?
A
- coronal plane
7
Q
in synovial joints, what movement occurs with adduction and abduction?
A
- adduction moves body part towards midline
- abduction moves away from midline
8
Q
in synovial joints, rotation occurs around ???
A
- a long axis
9
Q
what is an isotonic muscle contraction?
A
- change in length
- concentric: shortening
- eccentric: lengthening
10
Q
what is an isometric muscle contraction?
A
- length stays the same/ no change
