KINESIOL 1A03 Lecture Notes - Lecture 11: Erector Spinae Muscles, Occipital Bone, Sternocleidomastoid Muscle

• School: McMaster University
• Department: Kinesiology
• Course: KINESIOL 1A03
• Professor: Krista Howarth

Document Summary

Muscle terminology: origin or head: muscle end attached to more stationary of two bones (more proximal end/closest to torso/axial skeleton) Insertion: muscle end attached to bone with greatest movement (more distal end/farthest from torso/appendicular skeleton: tendons: attach muscle to bone. Aponeurosis: a very broad tendon: agonist: the muscle that is creating the muscle movement, creating the force of the movement. Pulling up movement, bicep contracting: antagonist: working against the agonist. Pulling up movement, triceps lengthening/not doing anything: synergists: muscles that work together to cause a movement. Prime mover: muscle that plays major role in accomplishing movement. Fixators: stabilize joints crossed by the prime mover; prevents movement of the origin of the prime mover. Muscles that move the vertebral column: muscles that extend, laterally flex, and rotate the vertebral column. Used to produce the erect posture: divided into deep and superficial groups, deep group: from vertebra to vertebra, superficial group: extend to vertebrae to ribs, example: erector spinae.