joints Flashcards

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1
Q

main function of joints?

A

come into contact/articulate w each other, increase mobility of body + limbs

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2
Q

classified 2 ways

A
  • shape
    -type of tissue that connects bones
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3
Q

factors in stability

A

The shape of the bones and whether they interlock with each other or not

The area over which the bones are in contact

The flexibility of the ligaments

The influence of other soft tissue structure (muscles, tendons, joint capsules)

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4
Q

ligaments

A

strong tissue that connect from bone to bone - strap like band or cord and pass over joint for stability

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5
Q

types of joints

A

fibrous, cartilaginous, synovial

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6
Q

fibrous joints

A

have a thin layer of fibrous tissue connecting the edges of the two bones. Ex: Sutures in the skull

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7
Q

Cartilaginous joints

A

bones separated by fibrocartilage disc (discs between vertebrae) or a thick layer of hyaline cartilage (ribs connecting to sternum).

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8
Q

synovial joints

A

(most common and most important for movement)

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9
Q

synovial cont

A

Gliding Joints
Hinge Joint
Pivot Joint
Condyloid Joint
Saddle Joint
Ball and Socket Joint

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10
Q

gliding joints

A

Least movement, flat bones, glide side to side (Ex: tarsals, carpals).

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11
Q

hinge joint

A

Bend/Flex only one direction (Ex: elbow).

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12
Q

condyloid joint

A

Oval surface fits into concave surface (Ex: wrist).

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13
Q

saddle joint

A

shaped like a saddle and rider and can move two directions (Ex: Between thumb and fingers)

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14
Q

ball and socket

A

Can move in all directions, sphere fits in rounded cavity (Ex: Shoulder and Hip)

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15
Q

pivot joint

A

One bone forms a ring and the other bone rolls allowing rotation (Ex: Your neck to head).

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