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32 Cards in this Set
- Front
- Back
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Origin of the Diaphragm ____________
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Xiphoid process of sternum, costal cartilages of inferior six ribs, and lumbar vertebrae
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Insertion for diaphragm is ________
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Central tendon
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Action of the diaphragm is _________
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Increases the vertical dimension of thoracic cavity, resulting in inhalation
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What is the origin for the external intercostals?
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Inferior border of rib above
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What is the insertion for the external intercostals?
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superior border of rib below
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Action of the external intercostals is _______
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Elevates rubs resulting in inhalation
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Origin of internal intercostals is _________
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Superior border of rib below
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Insertion of internal intercostals is ______
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inferior border of rib above
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Action of internal intercostals is __________
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Draws adjacent ribs together, resulting in exhalation
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______ is a rigid structure which moves at a fixed point called the fulcrum
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Lever
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________ is the mechanical advantage gained while using a lever
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Leverage
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What are the three components of a lever?
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Fulcrum, effort, resistance
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______ is the fixed point at which the movement occurs
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Fulcrum
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_______ is the weight that has to be moved
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Resistance
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________ is the mechanical force produced by the muscle contraction to overcome the resistance to make the movement
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Effort
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________ is produced when the effort exceeds resistance
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motion
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What is an example of a first class lever?
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Lowering and raising the head at the atlanto-occipital joint. The atlanto-occipital joint is the fulcrum (EFR)
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What is an example of a second class lever?
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Raising the body weight on toe while walking
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What is an example of a third class lever?
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Lifting weight using the forearm
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Maximus
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Largest
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Minumus
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Smallest
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Medius
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Intermediate
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Longus
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Long
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Brevis
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Short
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Serratus
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Saw-toothed
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Pectinate
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Comblike
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Piriformis
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Pear-shaped
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Gracilis
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Slender
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Flexor
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Decreases a joint angle
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Extensor
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Increases a joint angle
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Abductor
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Moves a bone away from the midline
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Adductor
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Moves bone closer to the midline
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