Back Joints

Question 1

Synovial Joint

Answer 1

Diarthrosis

Question 2

Synovial Joint (Diarthrosis) 7 types

Answer 2

1. Planar (uniaxial)
2. Ginglymus (Hinge) (uniaxial)
3. Trochoid (Pivot) (uniaxial)
4. Condyloid (biaxial)
5. Sellar (Saddle) (biaxial)
6. Spheroidal (Ball & Socket) (multiaxial)
7. Compound Synovial

Question 3

Fibrous Joint

Answer 3

Synarthrosis

Question 4

Fibrous Joint (Synarthrosis) Types

Answer 4

Ex. Sutures: Serrated, Squamous, Planar

Syndesmosis: unites bones w/ a sheet of fibrous tissue (a ligament or fibrous membrane) Ex. Interosseus membrane

Syndesmosis (gomphosis or socket): A fibrous joint in which a peg like process fits into a socket (ex. tooth)

Question 5

Catilaginous Joint

Answer 5

Amphiarthrosis

Question 6

Cartilaginous Joint (Amphiarthrosis) Types

Answer 6

1. Primary C.J. (Synchondrosis): bones united by cartilage to permit growth (ex. epiphysis plate)
2. Secondary C. J. (Symphysis): strong, slightly movable joints united by fibrocartilige (ex. intervertebral discs)

Question 7

Compound Joint

Answer 7

A joint w/ more than one category (Synovial, Fibrous, Cartilaginous)

Question 8

Atlantooccipital Joint

Answer 8

• Condylar Synovial Joint
• Atlas & Occipital condyles
• Anterior Atlantooccipital membrane, Tectorial membrane, Posterior atlantoocciptal membrane

Question 9

Median Atlantoaxial Joint

Answer 9

• Trochoid (pivot) Synovial Joint
• Dens of Axis & Atlas
• Cruciate L: Superior Longitudinal band, Transverse L. of the atlas, Inferior Longitudinal band
• Alar L. & Apical L. of dens

Question 10

Lateral Atlantoaxial Joint

Answer 10

• Planar Synovial Joint

- Superior articulating process of axis and Inferior articulating process of atlas

Question 11

Zygapophysial Joints

Answer 11

• Plane synovial joints
• Between superior and inferior articular facets from C2-L5
• Articular capsule

Question 12

Vertebral Syndesmoses

Answer 12

Ligamentous Structures that support the vertebral column

• Anterior longitudinal L.
• Posterior Longitudinal L.
• Ligamentum Flavum
• Interspinous L.
• Intertransverse L.
• Supraspinous L.

Question 13

Intervertebral Joint

Answer 13

• Symphysis cartilaginous Joint

- Intervertebral discs: annulus fibrosis & Nucleus Pulposus

Question 14

Lumbosacral Joint

Answer 14

• Intervertebral Joint: symphysis cartilaginous joint
• Between L5 & Sacrum
• Anterior Longitudinal L.
• Posterior Longitudinal L.
• Ligamentum Flavum
• Interspinous L.
• Intertransverse L.
• Supraspinous L.
• Illiolumbar L. : Lumbosacral L.
• Intervertebral disc

Question 15

Sacrococcygeal L.

Answer 15

• Symphysis Cartilaginous Joint
• apex of sacrum & superior surface of sacrum
• Anterior Sacrococcygeal L.
• Posterior Sacrococcygeal L.
• Lateral Sacrococcygeal L.