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31 Cards in this Set
- Front
- Back
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Rectus
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fibers run parallel to the midline
ex: rectus abdominus |
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Transverse
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fibers run perpendicular to midline
ex: transverse abdominus |
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oblique
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fibers run perpendicular to midline
ex: external oblique |
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frontalis
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a muscle near the frontal bone
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tibialis anterior
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a muscle near the tibia
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maximus
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largest
ex: gluteus maximus |
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minimus
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smallest
ex: gluteus minimus |
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longus
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longest
ex: palmaris longus |
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brevis
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shortest
ex: peroneus brevis |
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biceps
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indicates two origins
ex: biceps brachii biceps femoris |
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triceps
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indicates three origins
ex: triceps brachii |
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quadriceps
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indicates four origins
ex: quadriceps femoris |
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deltoid
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having a triangular shape
ex: deltoid |
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trapezius
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having a trapezoid shape
ex: trapezius |
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serratus
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having a sawtooth shape
ex: serratus anterior |
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rhomboideus
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having a diamond shape
ex: rhomboideus major |
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sternocleidomastoid
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originates on sternum and clavicle and inserts on mastoid process of temporal bone
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flexor
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decreases the angle at the joint
ex: flexor carpi radialis |
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extensor
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increases the angle at the joint
ex: extensor carpi ulnaris |
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abductor
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moves a bone away from the midline
ex: abductor pollicis longus |
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adductor
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moves a bone closer to the midline
ex: adductor magnus |
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levator
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produces an upward movement
ex: levator scapulae |
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depressor
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produces a downward movement
ex: depressor labii inferioris |
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supinator
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turns the palm upward or anteriorly
ex: supinator |
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pronator
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turns the palm downward or posteriorly
ex: supinator |
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sphincter
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decreases the size of an opening
ex: external anal sphincter |
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tensor
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makes a body part more rigid
ex: tensor fascia latae |
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rotator
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moves a bone around its longitudinal axis
ex: rotatores |
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first class levers
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think of a see-saw. there are not many examples of these in the body
ex: head resting on the vertebral column fulcrum= joints between the atlas and occipital bone resistance= bones of the face effort= contraction of the muscles of the upper back |
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second class levers
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FRE think of a wheelbarrow
ex: raising the body on the toes fulcrum= ball of the foot resistance= the body effort= contraction of the calf muscles to pull the heel upward |
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third class levers
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FER allow for greater speed and range of motion
most common type found in the body ex: flexing the forearm at the elbow fulcrum= elbow joint effort= contraction of the biceps brachii resistance= weight of the forearm |
