Chapter 9: Joints Flashcards Preview

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Flashcards in Chapter 9: Joints Deck (25)
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1
Q

Functions of Joints (3)

A
  • link bones of skeletal system
  • permit effective movement
  • protect softer organs
2
Q

joint is also known as______

A

articulation

3
Q

joint

A

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

4
Q

arthrology

A

science of joint structure & function

5
Q

kinesiology

A

study of musculoskeletal movement

6
Q

How are joints named?

A

typically from the names of the bones involved

7
Q

4 categories of joints

A
  • bony joints
  • fibrous joints
  • cartilaginous joints
  • synovial joints
8
Q

bony joint (synostosis)? example?

A

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

9
Q

fibrous joint (synarthrosis)

A

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

10
Q

What are the 3 kinds of fibrous joints?

A
  • sutures
  • gomphoses
  • syndesmoses
11
Q

sutures

A

fibrous joint

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

12
Q

classifications of suture? (3)

A
  • serrate (interlocking:wavy lines) ex. sagittal
  • lap (squamous)overlapping edges ex. temporal bone
  • plane (butt) straight, non overlapping
13
Q

gomphosis

A

fibrous joint

attachment of a tooth to its socket

14
Q

syndesmoses

A

fibrous joint

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

15
Q

cartilaginous joints

A

two bones linked by cartilage

16
Q

Types of cartilaginous joints (2)

A
  • synchondroses

- symphyses

17
Q

synchrondroses

A

cartilaginous joint

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

18
Q

symphysis

A

cartilaginous joint

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

19
Q

synovial joint

A

“freely movable”

  • joint in which 2 bones are separated by a space called a joint cavity
  • has articular cartilage
20
Q

articular cartilage

A

layer of hyaline cartilage covers the facing surfaces of two bones

21
Q

synovial fluid (3)

A

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

22
Q

tendon

A

sheet of tough collagenous connective tissue that attaches bone to muscle

23
Q

ligament

A

attaches bone to one another

24
Q

bursa

A

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

25
Q

menicus

A

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