Chapter 9: Joints Flashcards Preview

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Flashcards in Chapter 9: Joints Deck (25)
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1

Functions of Joints (3)

-link bones of skeletal system
-permit effective movement
-protect softer organs

2

joint is also known as______

articulation

3

joint

point where 2 bones meet, whether they are movable or not

4

arthrology

science of joint structure & function

5

kinesiology

study of musculoskeletal movement

6

How are joints named?

typically from the names of the bones involved

7

4 categories of joints

-bony joints
-fibrous joints
-cartilaginous joints
-synovial joints

8

bony joint (synostosis)? example?

"immovable"
formed when the gap between two bones ossifies & become a single bone
frontal & mandibular bone

9

fibrous joint (synarthrosis)

adjacent bones are bound by collagen fibers that emerge from one bone, cross the space between, and penetrate into the other

10

What are the 3 kinds of fibrous joints?

-sutures
-gomphoses
-syndesmoses

11

sutures

fibrous joint
immovable or slight movable fibrous joints closely bind the bones of the skull

12

classifications of suture? (3)

-serrate (interlocking:wavy lines) ex. sagittal
-lap (squamous)overlapping edges ex. temporal bone
-plane (butt) straight, non overlapping

13

gomphosis

fibrous joint
attachment of a tooth to its socket

14

syndesmoses

fibrous joint
2 bones are bound by longer collagenous fibers, giving bone mobility (tibia & fibula) or (ulna & radius)

15

cartilaginous joints

two bones linked by cartilage

16

Types of cartilaginous joints (2)

-synchondroses
-symphyses

17

synchrondroses

cartilaginous joint
bones are bound by hyaline cartilage (temporary joint in the epiphyseal plate in children)

18

symphysis

cartilaginous joint
2 bones joined by fibrocartilage (pubic symphysis & inter-vertebral discs)

19

synovial joint

"freely movable"
-joint in which 2 bones are separated by a space called a joint cavity
-has articular cartilage

20

articular cartilage

layer of hyaline cartilage covers the facing surfaces of two bones

21

synovial fluid (3)

slippery lubricant in joint cavity
makes movement almost friction free
nourishes articular cartilage & removes waste

22

tendon

sheet of tough collagenous connective tissue that attaches bone to muscle

23

ligament

attaches bone to one another

24

bursa

fibrous sac filled with synovial fluid, where tendon passes over bone (NOT A JOINT) ex. shoulder

25

menicus

found in the knee (two cartilages extend inward from left and right but do not entirely cross the joint)