Ch.9 - Joints

Question 1

Joint

Answer 1

A point of contact between two or more bones, between cartilage and bones, or between teeth and bones.

Question 2

Arthrology

Answer 2

The scientific study of joints

Question 3

Kinesiology

Answer 3

The scientific study of motion

Question 4

Joint Classification (Structural Classification)

Answer 4

1. Based on the presence or absence of synovial (joint) cavity and type of connecting tissue
2. Joints are classified as: fibrous, cartilaginous, or synovial

Question 5

Joint Classification (Functional Classification)

Answer 5

1. Based on degree of movement permitted

2. Joints may be Synarthroses (immovable), Amphiarthroses (partially moveable), or Diarthroses (freely moveable)

Question 6

Fibrous Joints

Answer 6

1. Fibrous joint lack a synovial cavity, have articulating bones held together by, fibrous connective tissue, and permit little to no movement (synovial)

Examples:
A. Suture - thin layer of fibrous connective tissue that unites skull bones
B. Synostosis - a suture joint that has ossified synarthroses
C. Syndesmosis - a fibrous joint in which there is more fibrous connective tissue than in a suture
ex. Gomphosis - a fibrous syndesmoses joint in which a cone-shaped peg fits into a socket, allowing no movement (root of a tooth in its socket)
ex. Distal tibiofibular ligament (permits some movement)

Question 7

Interosseous ligament

Answer 7

A fibrous joint made of a broad sheet of ligament that allows some movement between adjacent bones.

ex. between the radius and ulna

Question 8

Mnemonic for Joint Classification

Answer 8

From Carolina State Singing Amazes Ducks

Fibrous, Cartilaginous, Synovial, Synarthroses, Amphiarthroses, Diarthroses