Unit 7: Arthrology (wip)

Question 1

arthrology

Answer 1

The study of joints, concerned with the classification and function of the hundreds of junctions between bones occurring in the body.

Question 2

joint

Answer 2

Provides stability and/or mobility depending on its structure. Classified into three categories.

Question 3

fibrous joints (fixed)

Answer 3

Consists of two bones that are united by fibrous tissue, have no joint cavity, and exhibit no movement. (e.g. skulls, border between radius and ulna)

Question 4

cartilaginous joints (slightly movable)

Answer 4

Two bones are united by either hyaline cartilage or fibrocartilage. (e.g. discs between vertebrae, symphysis pubis, costal cartilage between ribs and sternum)

Question 5

synovial joints (freely movable) [WIP]

Answer 5

Most of the joints found in our bodies; surrounded by a capsule of dense fibrous connective tissue whose fibers are continuous with those of the periosteum of the bones which both protects and strengthen the joints.

Question 6

ligaments

Answer 6

Strong, slightly elastic fibrous tissues that attach bones to each other which resists abnormal joint movements.

Question 7

tendons

Answer 7

Bands of dense fibrous connective tissue that attach muscle to bones. Strong muscles around a joint help stabilize the joint.

Question 8

bursae

Answer 8

Small pouch-like sacs that are lined with a synovial membrane and contain synovial fluid. Provides a fluid-filled cushioning and reduces friction between bones in the joints to tendons, skins, etc..

Question 9

tendon sheath

Answer 9

A modified bursa that surrounds and lubricates the tendons of certain muscles, particularly those that cross the wrists and ankle joints.