Joint Structure + Function

Question 1

2 types of joint classifications

Answer 1

-histological
-functional

Question 2

histological joint classification

Answer 2

based on type of tissue

Question 3

3 types of histological joint classifications

Answer 3

-fibrous
-cartilaginous
-synovial

Question 4

fibrous

Answer 4

bone connected by a tough, fibrous tissue

Question 5

cartilaginous

Answer 5

bones connected by fibrocartilage or hyaline cartilage

Question 6

synovial

Answer 6

articulating surfaces enclosed with fluid-filled joint capsule

Question 7

functional joint classification

Answer 7

based on amount of motion

Question 8

3 functional joint classifications

Answer 8

-synarthrosis
-amphiarthrosis
-diarthrosis

Question 9

synarthrosis

Answer 9

immovable

Question 10

amphiarthrosis

Answer 10

slightly moveable

Question 11

diarthrosis

Answer 11

freely moveable

Question 12

are there correlation/overlap between histological + functional classifications

Answer 12

some correlation/overlap with some exception

Question 13

fibrous are ____

Answer 13

synarthrosis

Question 14

cartilaginous are ____

Answer 14

amphiarthrosis

Question 15

synovial are ____

Answer 15

diarthrosis

Question 17

synovium

Answer 17

body fluid with very low coefficient of friction, so things move freely

Question 18

fibrous joints examples

sutures (in skull between cranial bones)

Answer 18

synarthrosis

Question 19

fibrous joints examples

gomphoses (joint between tooth + mandible)

Answer 19

synarthrosis

Question 20

fibrous joints examples

syndesmoses (have more motion)

Answer 20

amphiarthrosis

Question 21

cartilaginous joints examples

synchondroses (bones connected by hyaline cartilage)

Answer 21

synarthrosis
-ex: joint where rib attaches to sternum

Question 22

cartilaginous joints examples

sympheses (bones connected by layer of fibrocartilage)

Answer 22

amphiarthrosis
-ex: joints between vertebral bodies publis symphysis, intervertebral disc

Question 23

synovial joints

Answer 23

have presence of fluid-filled joint cavity contained within a fibrous capsule

Question 24

ALL synovial joints are

Answer 24

diarthrosis
-freely moveable

Question 25

hinge joint: articular surface + movement

Answer 25

-no articular surface listed -movement: 1 plane

Question 26

saddle joint: articular surface + movement

Answer 26

-articular surface: reciprocal concave-convex shape -movement: 2 plane + circumduction (no axial rotation)

Question 27

plane joint: articular surface + movement

Answer 27

-articular surface: relatively flat -movement: gliding

Question 28

pivot joint: articular surface + movement

Answer 28

-no articular surface listed -movement: rotation only

Question 29

condyloid joint: articular surface + movement

Answer 29

-articular surface: ovoid articular surface -movement: 2 plane + circumduction (no axial rotation)

Question 30

ball + socket joint: articular surface + movement

Answer 30

-articular surface: ball shape surface + cup-like depression -movement: multi-plane + circumduction

Question 31

joints are usually surrounded by

Answer 31

ligaments + tendons

Question 32

difference between ligaments + tendons

Answer 32

-ligaments generally are not contractile -if a tissue contracts/shortens, not a ligament, it is a muscle

Question 33

ligaments have less/more collagen than elastin

Answer 33

more collagen than elastin

Question 34

what determines amount of stability vs mobility

Answer 34

amount of collagen + elastin

Question 35

paratenon + epitenon

Answer 35

form frictionless shealths around tendon

Question 36

how do ligaments + tendons feel when we palpate

Answer 36

similar

Question 37

bursae

Answer 37

saclike cavity filled with a viscous fluid + situated between tissues to avoid friction -protecting layer

Question 38

2 types of bursae

Answer 38

-subcutaneous bursae -submuscular bursae

Question 39

where are bursae found

Answer 39

in areas where tendons/skin will rub

Question 40

cartilage

Answer 40

found in joints at end of the bone

Question 41

3 types of cartilage

Answer 41

-fibrocatilage -elastic cartilage -hyaline cartilage

Question 42

fibrocartilage

Answer 42

white

Question 43

fibrocartilage examples

Answer 43

-meniscus -annulus fibrosis of intervertebral disc

Question 44

elastic cartilage

Answer 44

-more elastin -flexible -yellow

Question 45

elastic cartilage example

Answer 45

outside of ear (auditory meatus)

Question 46

hyaline cartilage

Answer 46

-articular cartilage -forms smooth resilient low friction surface

Question 47

hyaline cartilage is mostly found in which types of joints

Answer 47

diarthroidial