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Articulations (joints)

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Presentation on theme: "Articulations (joints)"— Presentation transcript:

1 Articulations (joints)
Hold bones together Allow body movements Structurally are 3 types: Fibrous, cartilaginous, synovial Functionally are 3 types: Synarthroses or immovable Amphiarthroses or slightly movable Diarthroses or freely movable Immovable..……Slightly movable….….Freely movable S……………………..…A…………………………D

2 1. Fibrous Joints - immovable
No joint cavity Two major types Suture joints – very short connective tissue fibers Syndesmoses – short ligament of dense fibers Gomphosis – short periodontal ligament

3 2. Cartilaginous joints – most are slightly movable
No joint cavity Two main types Synchondroses Symphyses

4 3. Synovial joints – freely movable
Joint cavity containing fluid Similarities between synovial joints: 1. articular capsule = fibrous capsule + synovial membrane. 2. articular cartilage covering the bone surface. 3. reinforcing ligaments. 4. May have fibrocartilage pads within capsule. 5. Synovial fluid

5 Synovial Joints May also have:
Menisci- discs or wedges of fibrocartilage pads Bursae- flattened fibrous sacs lined wih synovial membrane

6 Synovial Joints Are many different types: Plane (gliding) Hinge Pivot
Condyloid Saddle Ball and socket

7 Types of synovial joints and their
movements a. Plane – allows sliding movements in 1 or 2 planes. b. Hinge – allows movement in 1 plane c. Pivot – allows rotational movement in 1 axis.

8 d. Condyloid – allows biaxial
movements in 2 planes. e. Saddle – allows movement in 2 planes (biaxial). f. Ball and socket – allows multiaxial movement.

9 Find Two example of each




13 The hip joint – a ball and socket joint
Frontal section through right hip joint

14 Right hip joint showing ligaments.
Front (anterior) view Back (posterior) view

15 Largest and most complex joint in the body
Knee joint Largest and most complex joint in the body Is unique as it is only partly enclosed by an articular capsule Midsagittal view Anterior view

16 Label the following structures on this anterior view of the knee joint
Posterior cruciate ligament Fibular collateral ligament Medial condyle Tibial collateral ligament Lateral condyle of femur Anterior cruciate ligament Lateral meniscus Medial meniscus Tibia Patella ligament Fibula Patella Quadriceps tendon


18 The shoulder or glenohumeral joint –
is the most freely moving joint in the body.

19 The temporomandibular joint

20 Activity

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