Unit 3

Question 1

Three types of joints

Answer 1

1. synarthrosis
2. amphiarthrosis
   3.diarthorsis

Question 2

Synarthrosis ( four major types)

Answer 2

1. Suture
2. Gomphosis
3. synchondrosis
4. synostosis

Question 3

Amphiarthrosis ( two major types)

Answer 3

1. syndesmosis
2. symphysis

Question 4

Diarthrosis (Synovial Joints)

Answer 4

The components that make up a synovial joint are:

Fibrous articular capsule
Synovial cavity
Synovial membrane
Haversian fat pads
Articular (hyaline) cartilage
Ligaments
Tendons
Bursae

Question 5

Axis of Movement:
A joint that allows movement in only one axis is called

Answer 5

Monaxial (e.g. elbow and knee).

Question 6

Axis of movement:
A joint that allows movement in along two different axes is called

Answer 6

Biaxial (e.g. metacarpophalangeal joints).

Question 7

Axis of movement:
A joint that permits a combination of angular movement and rotation is called

Answer 7

Triaxial or Multiaxial (e.g. shoulder and hip).

Question 8

Range of Motion
Range of Motion is restricted by:

Answer 8

1. Skeletal Structures
2. Ligaments
3. Muscles

Question 9

What is a Lever?

Answer 9

a rigid structure, such as a bone, that moves at a fixed point called a fulcrum. There are three classes of levers found in the human body:

Question 10

Three classes of levers

Answer 10

First-Class Lever: The fulcrum lies between the applied force and the resistance (e.g triceps insertion at the elbow)
Second-Class Lever: The resistance is located between the applied force and the fulcrum (e.g. plantar flexors insertion at the ankle)
Third-Class Lever: A force is applied between the applied force and the fulcrum (e.g. biceps insertion at the elbow)