Joints Flashcards

1
Q

What are the main 2 types of joints

A

Cartilaginous

Synovial

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2
Q

What do cartilaginous joints do?

A

Provides direct connections between vertebral bodies

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3
Q

What are synovial joints

A

joints found between the ones that move against each other

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4
Q

What two parts make up a cartilaginous joint?

A

Nucleus pulposus

Annulus fibrosus

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5
Q

What are the 2 joints of the atlas?

A

Atlanto-occipital joint

Atlantoaxial joint

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6
Q

What movement is the atlanto-occipital joint limited to?

A

flexion/ extension in the sagittal plane - i.e: nodding

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7
Q

What movement is the atlantoaxial joint capable of?

A

Rotational on a longitudinal axis - i.e: head shaking

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8
Q

Which atlas joint is responsible for nodding?

A

The atlanto-occipital joint

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9
Q

Which atlas joint is responsible for shaking the head?

A

The atlantoaxial joint

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10
Q

Name 3 synovial joints

A

Shoulders
Hips
Elbow
Knee joints

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11
Q

What comprises the structure of a synovial joint?

A
Synovial membrane
Fibrous joint capsule
Articular surface 
Synovial fluid
Ligaments
Meniscus
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12
Q

What is found in the synovial cavity?

A

Synovial fluid

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13
Q

What structure holds synovial fluid in the synovial cavity?

A

Synovial membrane

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14
Q

What encompasses the entire synovial joint?

A

The fibrous joint capsule

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15
Q

What happens to joints in arthritis?

A

Parts of synovial joint is worn away leading to bone on bone contact

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16
Q

what are the 7 types of joint structures?

A
condylar
ellipsoidal
hinge
pivot
plane (aka gliding or arthrodial joint)
saddle
spheroidal (ball and socket)
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17
Q

where can you find a ellipsoidal joint?

A

wrist

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18
Q

where can you find a condylar joint

A

wrist
base if finger
connecting of the radius and carpal bones

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19
Q

what movement does a condylar joint make

A

all movements except axial rotation – can go forwards, backwards, side to side

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20
Q

where can you find a hinge joint

A

Elbow, knee, finger joint, toe joint, ankles

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21
Q

what type of movement does a hinge joint make

A

Move along one plane – to bend and straighten actions such as flexing a finger

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22
Q

where can you find a pivot joint

A

First and second vertebrae of the neck

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23
Q

Describe the movement of a pivot joint

A

The cylinder end of bone rotates inside the ring of the other bone (or the ring rotates around the cylinder)

24
Q

Where can you find a plane joint (aka gliding/ arthropodial joint)

A

Between metacarpal bones (hands) and cuneiform bines (feet)

25
Describe the movement of a plane joint
Two bone surfaces flat against each other slide over one another
26
Where can you find a saddle joint
``` Carpometacarpal joint of thumg Sternoclavicular joint of thorax Incudomalleolar joint of the middle ear Calcaneocuboid joint of the heel Phalanges ```
27
What kind of movement does a saddle joint make
one bone is shaped like a saddle, the other rests as a 'rider'
28
Why is a saddle joint better adapted than a hinge or gliding joint
It provides better stability and more flexibility
29
Where can you find a spheroidal joint (ball and socket)
Hip | Shoulder
30
What kind of movement does a spheroidal joint make
One bone has a rounded surface that moves within a depression on another bone
31
What is a spheroidal bone also known as?
Ball and socket
32
How many vertebrae does the spine have
7
33
What connects all vertebrae together
Nuchal ligament
34
What are the first two cervical vertebrae known as?
``` The atlas (1st) The axis (2nd) ```
35
What do the wings of the atlas do?
allows spinal column to articulate with the skull, providing a resting place for the occipital condyles
36
Which is the longest vertebrae
Axis
37
Describe the structure of the atlas
No conventional body | Composed of 2 lateral masses joined by dorsal and ventral arches
38
What are thoracic vertebrae articulate with?
Ribs
39
Which vertebrae are articulate with the ribs?
Thoracic
40
Describe the structure of the thoracic vertebrae
Short bodies with flattened extremities, costal facets, short traverse processes and prominent spinous processes
41
Describe the structure of the lumbar vertebrae
Longer and more uniform than thoracic vertebrae | Shorter and with long flattened traverse processes that project laterally
42
Which is a vertebrae process?
A projection from the vertebra
43
What are the 3 types of vertebrae processes
Spinous Transverse Articular
44
Describe the structure of the sacral vertebrae
Sacrum = a single bone formed by the fusion of several vertebrae that articulates with the pelvic girdle - Narrows caudally and is curved to present a concave surface to the pelvic cavity
45
What does Dolichocephalic mean?
having a long skull
46
What does Mesocephalic mean?
Having a head of medium proportions
47
What does brachycephalic mean?
Having a relatively short broad skull
48
What is the word for a long skull
Dolichocephalic
49
What is the word for a medium sized skull?
Mesocephalic
50
What is the word for a short broad skull
brachycephalic
51
Give an example of an animal with a brachycephalic skull
``` French bulldog Boxer Pug Humans with Down Syndrome Shih Tzus Persian cats ```
52
Give an example of an animal with a mesocephalic skull
``` Dalmatian Labrador Beagle Border collie Springer Spaniel ```
53
How would you generally describe the shape of a human skull
Globular (with obvious racial differences)
54
What is the lower half of the ribs comprised of
Cartilage
55
Where do the ribs meet
At the sternum
56
What is the most caudal sternabra called?
The xiphoid