lesson 5 (joints)

Question 1

articulations between bones that may or may not permit movement

usually held together by cartilage, fluid, or dense CT

Answer 1

joints

Question 2

meaning immovable - common in axial skeleton

Answer 2

synarthroses

Question 3

slightly moveable, common in axial skeleton

Answer 3

amphiarthroses

Question 4

freely movable, common in appendicular skeleton

Answer 4

diarthroses

Question 5

bones are tightly bound by a minimal amount of fibrous tissue

allows bone growth so that the skull can expand with the brain during childhood

Answer 5

suture

Question 6

occurs when two bones are connected by relatively long CT ligaments

Answer 6

syndesmosis

Question 7

the ends of opposing bones are covered by what?

absorbs compression

Answer 7

hyaline cartilage

Question 8

joint cavity is enclosed in a two layered capsule

Answer 8

articular capsule

Question 9

dense irregular CT - strengthens joint

Answer 9

fibrous capsule

Question 10

loose CT, lines joint capsule and covers internal joint surfaces

Answer 10

synovial membrane

Question 11

what are the following three functions referring to?

• lubricates the surfaces of the articular cartilages on the ends of the bones
• nourishes the chondrocytes by entering an exiting the articular cartilage’s due to the forces acting on the joint
  -acts as a shock absorber

Answer 11

synovial fluid

Question 12

located outside of the capsule

Answer 12

extra capsular ligaments

Question 13

located internal to the capsule

Answer 13

intracapsular ligaments

Question 14

a flattened fibrous sac lined by a synovial membrane

Answer 14

bursa

Question 15

an elongated bursa that was around a tendon

Answer 15

tendon sheath

Question 16

one bone across the surface of another

Answer 16

gliding

Question 17

movements change the angle between bones

Answer 17

angular movement

Question 18

movement around a bones long axis

Answer 18

rotation

Question 19

forearm rotates laterally
- palm faces anteriorly

Answer 19

supination

Question 20

forearm rotates medially
- palm faces posteriorly

Answer 20

pronation

Question 21

lifting the foot so its superior surface approaches the shin

Answer 21

dorsiflexion

Question 22

depressing the foot - pointing the toes

Answer 22

plantar flexion

Question 23

turning the sole medially

Answer 23

inversion

Question 24

turning the sole laterally

Answer 24

eversion

Question 25

nonangular movement of jutting out the jaw

Answer 25

protraction

Question 26

opposite movement to protraction

Answer 26

retraction

Question 27

allows movement around one axis only

Answer 27

uniaxial

Question 28

allow moving bone to travel, classified as biaxial

Answer 28

condyloid joints

Question 29

movement occurs around two axes

Answer 29

biaxial

Question 30

spherical head of one bone fits into round socket of another, classified as multiaxial

Ex - shoulder and hip joints

Answer 30

ball and socket joints