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nando54321
on FreezingBlue Flashcards.
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Define Origin
Origin is the point of attachment-it does not move when muscle shortens
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Define Insertion
Insertion is the point of attachement- it moves towards the origin
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Define Body or Belly
Body or Belly are the larger region of myscle between origin and insertion
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Define Flexion
Flexion reduces angle of joints
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Define Extention
Extension increases angle of joints
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Define abduction
Abduction is Moving away from the body
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Define Adduction
Adduction is bringing back to the body
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Define rotation
Rotates bone around longitudinal axis, sucn as the neck, ankles, wrist, long axis of body
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Define Dorsiflexion
Dorsiflexion is the movement towards the back, as in the foot moving upwards
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Define Plantar flexion
Toes moving downwards toward the sole of foot
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Define flexor muscle
decreases a joint angle
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Define Extensor muscle
increases a joint angle
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Define Abductor muscle
moves a bone away from the midline or away from body
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Define adductor muscle
moves a bone closer to the midline of the body
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Define external oblique
fibers run diagonally (at an agle) to the midline of the body
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Define Rectus Abdominis
Fibers that run parallel to the midline
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Define tendon
Connective tissue that connects muscle to bones
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Define ligament
Connects bone to bone
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Define motor neuron
A neuron that conveys impulses from the central nervous system to a muscle
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Define neuromuscular junction
- A neuromuscular junction is a place in the body where nerves meet a muscle
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