Anatomy Lecture 3: What does Dislocation mean?

Question 1

What is the function of the skeleton?

Answer 1

Support and Protection of body
organs

Calcium Metabolism

Red Blood Cell Formation

Attachment of muscles

Question 2

What is the function of cartilage?

Answer 2

Required in areas located for

mobility.

Question 3

What are the Classifications of Joints?

Answer 3

Fibrous Joint
Cartilaginous Joint
Synovial joints Joint

Question 4

Order the joints from most stable to least stable

Answer 4

Fibrous Joint
Cartilaginous Joint
Synovial Joint

Question 5

What are the joint between the skull?

Answer 5

Fibrous Joints

Called Sutures

Question 6

What are the two types of fibrous joints?

Answer 6

Sutures

Fibrous Sheets

Question 7

What is an example of a Fibrous Sheet?

Answer 7

Syndemoses - linkage between two bones

The Interosseous membrane between the radius and Ulna

Question 8

What is the Fibrous joint in New born babies?

Answer 8

Fontanelles - wide sutures in neonatal baby’s skulls

Question 9

Why does a newborn baby require Fontanelles?

Answer 9

The baby has to mould its head between the coccyx and the pubic symphysis

Question 10

What is the division of Cartilaginous Joints?

Answer 10

Primary and Secondary

Question 11

What are the examples of a primary and secondary cartilaginous joint?

Answer 11

Primary: Epiphyseal growth plate
Secondary: Intervertebral disc

Question 12

What happens to the Epiphseal Growth Plate with age?

Answer 12

The Growth plate will Ossify

Question 13

What is Symphyses?

Answer 13

Cartilage between Bone

Question 14

What are the Intervertebral disc be divided into?

Answer 14

Anulus Fibrosus - The Ring of Fibrocartilage (Hard)

Nucleus Pulpous - Inner soft centre

Question 15

What are the features of a Synovial joint?

Answer 15

Two or more bones articulate 
Articular surfaces covered in Hyaline cartilage 
Capsule 
Ligaments
Skeletal muscles
Tendons
Bursae

Question 16

What types of bursae are there?

Answer 16

Synovial fluid extensions

Sacs of synovial fluid

Question 17

What are the five types of Synovial Joint?

Answer 17

Pivot Joint
Ball and socket 
Plane Joint 
Hinge Joint 
Biaxial Joint

Question 18

Example of a Pivot joint?

Answer 18

Superior part of neck

Question 19

Example of a Ball and socket?

Answer 19

Hip Joint

Question 20

Example of a Plane Joint?

Answer 20

Acromioclavicular Joint

Question 21

Example of a Hinge Joint?

Answer 21

Elbow

Question 22

Example of a Biaxial Joint?

Answer 22

Hands and Feet

Question 23

What is a Subluxation?

Answer 23

A subluxation a reduced area of contact between articular surfaces

Question 24

What is a Dislocation?

Answer 24

A dislocation is a complete loss of contact between the articular surfaces.

Question 25

What joints are likely to dislocate? (10)

Answer 25

Craniovertebral Joint 
Temporomandibular Joint 
Shoulder Joint 
Acromioclavicular Joint 
Elbow Joint 
Hip Joint 
Pubic Symphysis 
Interphalangeal Joint
Knee 
Ankle

Question 26

What type of joint is a Temporomandibular Joint?

Answer 26

A synovial Joint

Question 27

What are the two types temporomandibular dislocation is there?

Answer 27

Unilateral

Bilateral

Question 28

What occurs when the TMJ is dislocated?

Answer 28

The head of the condylar process of the mandible becomes stuck anterior to the articular tubercle or
the temporal bone.

Question 29

What is Proprioception?

Answer 29

Joint position can be sensed

Question 30

What forms the TMJ?

Answer 30

The Mandibular Fossa of the Articular Tubercle of the Temporal Bone

The head of the Condylar Process (inferior)

Question 31

What does the capsule consist of in synovial joints?

Answer 31

A Fibrous Layer

A deeper synovial Membrane