A & P SG #3- Joints/Articulations

Name the 6 types of synovial joints

Gliding, Hinge, Pivot, Ellipsoidal, Saddle, & Ball & Socket

What are reinforcing ligaments

Reinforce the joint

Define Synovial joint

2 bones are held together by an articular capsule which creates joint cavity containing synovial fluid

What are the 3 structural classifications of joints

Fibrous, Cartilaginous, Synovial

What is the functional classification of Suture

Synarthrotic

What is the functional classification of Synchondrosis

Synarthrotic

What is the functional classification of Synostosis

Synarthrotic

What is Functional Classification

Based on how much movement occurs at that joint

What is Structural Classification

Based on what structure(material) holds 2 bones together

Where can you find synovial fluid

Between the articulating bones, occupies all free space

Define Fibrous joint & give an example

Bones are joined by fibrous tissue, Frontal, & Parietal suture

Define Cartilaginous & give an example

Bones are united by cartilage, True ribs to Sternum

What are bursae & what is their function

Bursae are small fluid filled pockets (sac-like), reduce the mechanical friction between one structure ( bone & another) & to absorb shock

What is the structural classification of Symphysis

Cartilagenous

What is the structural classification of Synchondrosis

Cartilagenous

What is the functional classification of Synovial joints

Diarthrotic

Define dislocation or luxation

Dislocation of a joint

What is the description of Gomphosis

Peg-in-Socket joints ( gums, teeth)

Which specific synovial joint ONLY allows for rotational movement

Pivot Joints

What is the function of synovial fluid

Reduces friction at the joint, enabling the articulating bones to move freely, distributes nutrients

Which specific synovial joint is formed by a concave bone fitting into a convex bone end

Saddle joint

Which specific synovial joint is the most freely movable of the synovial joints

Ball & Socket

Define joint

A place where two or more bone meet, come together

What is the functional classification of Symphysis

Amphiarthrotic

What is the functional classification of Syndesmosis

Amphiarthrotic/Amphiathrosis

What is the description of Synovial joints

Articular capsule (joint capsule joins 2 bones)

Which specific synovial joints allow for circumduction

Ellipsoidal, Saddle, & Ball & Socket joints

Which Two synovial joints allow for movement in the vertical and horizontal plane as well as circumduction

Ellipsoiidal & Saddle

What is the structural classification of Gomphosis

Fibrous

What is the structural classification of Suture

Fibrous

What is the structural classification of Syndesmosis

Fibrous

What is the description of Symphysis

Fibrous cartilage joins 2 bones

What is the description of Synostosis

Formed when 2 or more bones completely fuse together

Which specific synovial joint allows for only slight movement

Gliding joint

Which specific synovial joint is the elbow or knee joint

Gliding joint

What is the function of the articular cartilage

Hyaline cartilage covers opposing bone surface, reduces friction & absorbs compression so the bone wont be crushed

What is the description of Synchondrosis

Hyaline cartilage joins 2 bones (between rib cage)

Define Bursitis

Inflammation of the bursae caused by friction due to repetitive motion

What is the description of Suture

Joint between skull bones

What is the description of Syndesmosis

Ligament connects 2 bones, fibrous

What is the structural classification of Synostosis

NONE

Define Sprain

Occurs when the ligaments in a joint is stretched so much that it tears (some collagen fibers are torn)

Define Subluxation

Partial dislocation

What are joint/articular capsule

Surrounds the joint cavity, has 2 layers; outer fibrous & inner synovial membrane

What is the functional classification of Gomphosis

Synarthrotic

What are the 3 functional classifications of joints

Synarthrotic, Amphiarthrotic, Diarthrotic

What is the structural classification of Synovial joints

Synovial

What is the basic structure of a synovial joint

The basic structure of a synovial joint consists of a synovial cavity between the articulating bones,articular cartilage, a fibrous articular capsule, & ligaments.

What is periosteum

outer surface of diaphysis. it is dense, white and fibrous.