Anatomy (Joints)

Question 1

Diarthrosis (synovial) Joints (Example and Degree of Movement)

Answer 1

• Knee
• Allows movement
• Relatively unstable

Question 2

Cartilaginous Joints (Example and Degree of Movement)

Answer 2

• Vertebrae

- Slightly moveable

Question 3

Synarthrosis (fibrous) Joints (Example and Degree of Movement)

Answer 3

• Top of skull

- Very little or no movement

Question 4

Arthrocentesis and Uses (5)

Answer 4

• Removal of fluid from a pint using a needle
  1. Find out why a joint is painful, swollen, or fluid-filled
  2. Drain fluid from swollen joint to decrease pain and increase mobility of joint
  3. Diagnose the specific type of arthritis occurring
  4. Confirm a diagnosis of infection in the joint
  5. Check for crystals (if present could mean gout)

Question 5

Joint Capsule (diarthrosis)

Answer 5

• Outside of joint

- Extends from one bone to the other

Question 6

Articular Cartilage (diarthrosis)

Answer 6

• Cover bone surfaces that touch each other

- Gets nutrients from BV’s in bone deep to it, and synovial fluid external to it

Question 7

Synovial Membrane (diarthrosis)

Answer 7

• Covers non-artuclating surfaces of bones within joints

- Secretes synovial fluid which lubricates joint

Question 8

Collateral Ligaments (diarthrosis)

Answer 8

• Can be thickenings of joint capsule or ligaments external to the joint that strengthen the capsule

Question 9

Intra-articular Ligaments and Discs

Answer 9

• Reinforce the joint

- Fibrocartilaginous structures that deepen articulation (socket) and help guide joint movement

Question 10

Blood Vessels (diarthrosis)

Answer 10

• Any BV that passes by the joint feeds that joint

- Articular Cartilage doesn’t receive blood supply

Question 11

Nerves (diarthrosis)

Answer 11

• Nerves that cross the joint send branches to innervate the joint