Chapter 9: Skeletal System: Articulations Flashcards Preview

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Flashcards in Chapter 9: Skeletal System: Articulations Deck (132)
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91

By monitoring stretching within the joint, the nervous system can detect changes in our posture and ______

adjust body movements

92

are composed of dense regular connective tissue but they are not part of the synovial joint itself, they bind bone to bone.

tendons

93

When a muscle contracts, the ____ from the muscle moves the bone to which it is attached, thus causing movement at the joint.

tendon

94

Tendons help _____ joints because they pass across or around a joint to provide mechanical support, and sometimes they limit the _____ of movement permitted at a joint.

stabilize
range or amount

95

Synovial joints usually have bursae and ____ as accessory structures in addition to the main components just described.

fat pads

96

a fibrous, saclike structure that contains synovial fluid and is lined internally by a synovial membrane.

bursae

97

Bursae are associated with most ___ joints and are where bones, ligaments, muscles, skin, or tendons overlie each other and rub together.

synovial joints

98

Bursae may be either connected to the joint cavity or ____.

completely separate from the joint cavity.

99

An elongated bursa called a ____ wraps around a tendon where there may be excessive friction.

tendon sheath

100

Tendon sheaths are especially common in the confined spaces of the ____ and ____.

wrist and ankle

101

Are often distributed along the periphery of a synovial joint and act as packing material and provide some protection for the joint.

fat pads

102

Often ____ fill the spaces that form when bones move and the joint cavity changes shape.

fat pads

103

the bone moves in just one plane or axis

uniaxial joint

104

the bone moves in two planes or axes

biaxial joint

105

the bone moves in multiple planes or axes

multiaxial or triaxial joint

106

In a ____ joint only allows limited side-to-side movements in a single plane, and because there is no rotational or angular movement with this joint.

plane

107

A _______ an elongated, rigid object that rotates around a fixed point called the _____.

lever
fulcrum

108

Levers have the ability to alter or change the speed and distance of movement produced by a force, the direction of ____, and the force strength.

an applied force

109

Movement occurs when an ____ applied to one point on the lever exceeds a ____ located at some other point.

effort
resistance

110

The part of a lever from the fulcrum to the point of effort is called the _____.

effort arm

111

The lever part from the fulcrum to the point of resistance is the ____.

resistance arm

112

A long bone acts as a ____, a joint serves the ___, and the effort is generated by a muscle attached to the bone.

lever
fulcrum

113

Three classes of levers found in the human body

first class
second class
third class

114

FRE acronym

In a first class lever, the fulcrum is between the resistance and the effort
In a second class lever, the fulcrum and the applied effort
In a third class lever, the effort is in between the fulcrum and the resistance

115

two opposing articular surfaces slide past each other in almost any direction; the amount of movement is slight

gliding motion

116

Gliding, angular, rotational, and special movements are the types of motions that occur in the ______.

synovial joints

117

the angle between articulating bones increases or decreases

angular motion

118

a bone pivots around its own longitudinal axis

rotational motion

119

types of movement that do not fit in to rotational, gliding, or angular motion.

special movements

120

movement in an anterior-posterior (AP) plane of the body that decreases the angle between the bones

flexion