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Bio 40a
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Define Origin
Origin is the point of attachment-it does not move when muscle shortens
Define Insertion
Insertion is the point of attachement- it moves towards the origin
Define Body or Belly
Body or Belly are the larger region of myscle between origin and insertion
Define Flexion
Flexion reduces angle of joints
Define Extention
Extension increases angle of joints
Define abduction
Abduction is Moving away from the body
Define Adduction
Adduction is bringing back to the body
Define rotation
Rotates bone around longitudinal axis, sucn as the neck, ankles, wrist, long axis of body
Define Dorsiflexion
Dorsiflexion is the movement towards the back, as in the foot moving upwards
Define Plantar flexion
Toes moving downwards toward the sole of foot
Define flexor muscle
decreases a joint angle
Define Extensor muscle
increases a joint angle
Define Abductor muscle
moves a bone away from the midline or away from body
Define adductor muscle
moves a bone closer to the midline of the body
Define external oblique
fibers run diagonally (at an agle) to the midline of the body
Define Rectus Abdominis
Fibers that run parallel to the midline
Define Maximus
Largest
Define tendon
Connective tissue that connects muscle to bones
Define ligament
Connects bone to bone
Define motor neuron
A neuron that conveys impulses from the central nervous system to a muscle
Define neuromuscular junction
A neuromuscular junction is a place in the body where nerves meet a muscle
Author
nando54321
ID
184170
Card Set
Bio 40a
Description
Muscular Muscle
Updated
11/18/2012, 7:26:04 PM
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