S & M Systems: Muscles Flashcards
What is the AGONIST?
The muscle whose contraction moves a part of the body
The prime mover
Expands/contracts
What is the ANTAGONIST?
The muscle which provides resistance to the agonist
What is the SYNERGIST/FIXATOR?
Muscle(s) that stabilise one part of the body while another part is moving
What is the INSERTION?
Point of attachment that tends to move towards the origin during muscular contraction
What is the ORIGIN?
Point of attachment of the muscle that remains fixed during contraction
What is the agonist and antagonist when there’s flexion at the wrist?
Agonist : wrist flexors
Antagonist : wrist extensors
What is the agonist and antagonist when there’s flexion at the Elbow?
Agonist : Biceps Brachii
Antagonist : Triceps Brachii
What is the agonist and antagonist when there’s extension at the shoulder?
Agonist : posterior deltoid
Antagonist : anterior deltoid
What is the agonist and antagonist when there’s extension at the knee?
Agonist : rectus femoris
Antagonist : biceps femoris
What is the agonist and antagonist when there’s flexion at the hip?
Agonist : illiopsoas
Antagonist : gluteus maximums
What is the agonist and antagonist when there’s Dorsi-flexion at the ankle?
Agonist : tibialis anterior
Antagonist : gastrocnemius and soleus