MSK

Question 1

Synovial Joints

Answer 1

• freely movable
• do not touch each other
• bones covered by articular cartilage and separated by synovial cavity with synovial fluid
• ie knee, shoulder

Question 2

Types of Synovial Joints (3)

Answer 2

• spheroidal: convex surface in concave cavity; flex, extend, abduct, adduct, rotate, circumduct (shoulder and hip)
• hinge: flat, planar; motion in one plane (flex, extend); ie elbow (interphalangeal jts of hand and foot)
• condylar: convex/concave; movement of two articulating surfaces not dissociable; ie knee or TMJ

Question 3

Cartilaginous Joints

Answer 3

• slightly movable

- ie vertebral bodies of spine

Question 4

Fibrous Joints

Answer 4

• immovable
• intervening layers or fibrous tissue/cartilage hold bones together
• ie skull sutures

Question 5

Muscles of the Rotator Cuff

Answer 5

(SITS)

• supraspinatus
• infraspinatus
• teres minor
• subscapularis

Question 6

Muscles of the Hand

Answer 6

• finger flexion: lumbricals
• finger abduction: dorsal interossei
• finger adduction: palmar interossei