Lecture 6: Arthrology

Question 1

Arthrology

Answer 1

Study of joints

Question 2

Joint

Answer 2

2 Bones Come Together/Articulate

Question 3

Joint Characteristics

Answer 3

Does not always allow movement,

It is a balance between mobility and stability

Question 4

Least Stable Joint in Body

Answer 4

Shoulder Joint

Question 5

More Mobility =

Answer 5

Less Stability

Question 6

Structural Classification

Answer 6

Anatomical Structure (how they're held together),
Bony Fusion,
Fibrous Joint,
Cartilaginous Joint,
Synovial Joint

Question 7

Functional Classification

Answer 7

3 Types of Movement:
Synarthroses,
Amphiarthroses,
Diarthroses

Question 8

Synarthroses

Answer 8

Immovable Joints,
Bones very close together,
May interlock to stop movement

Question 9

Sutures

Answer 9

Type of Synarthroses Joint,
Edges of bone interlock,
Held together by dense irregular connective tissue,
Fingerlike projections,
Between bones of skull

Question 10

Sutures of the Skull

Answer 10

Coronal,
Sagittal,
Lambdoid,
Squamous

Question 11

Metopic (frontal) Suture

Answer 11

Suture splitting the frontal bone in half in newborns,

Allows for skull movement during birth

Question 12

Fontanelles

Answer 12

Soft spots on baby heads,
Close with age,
Allow for skull movement during birth

Question 13

Gomphosis

Answer 13

Type of Synarthroses Joint,
Periodontal ligament holds tooth in place,
Peg in socket,
Located between teeth and the mandible or maxilla

Question 14

Synchondrosis

Answer 14

Type of Synarthroses Joint,
Cartilage separates 2 bones,
Held together by hyaline cartilage,
Sometimes a temporary joint

Question 15

Examples of Synchondrosis Joints

Answer 15

Xyphoid Process,
Body of Sternum,
Epiphyseal Plates

Question 16

Synostosis

Answer 16

Type of Synarthroses Joint,
Former joint; then fuses,
Joint between two bones

Question 17

Examples of Synostosis Joints

Answer 17

Epiphyseal plate after fusion,

Metopic suture after frontal bone fusion

Question 18

Amphiarthroses

Answer 18

Allow more movement than synarthroses but not freely at all,

Bones connected by collagen fibers or cartilage

Question 19

Syndesmosis

Answer 19

Type of Amphiarthroses,
Collagen fibers,
Large spaces between bones,
Little movement possible,
Connected by an interosseous ligament

Question 20

Symphysis

Answer 20

Type of Amphiarthroses,
Slightly mobile,
Bones separated by a pad of fibrous cartilage

Question 21

Examples of Symphysis

Answer 21

Pubic Symphysis,

Joints between vertebral bodies where there are intevertebral discs

Question 22

Diarthroses

Answer 22

Synovial Joints (freely moveable),
Most common type of joint in body,
Joint cavity separates the bone