9: MOVEMENT + MUSCLE ACTIONS Flashcards
What is tranverse plane of movement
Splits the body into superior (upper) and inferior (lower). Any movement that rotates
What movements take place in the tranverse plane
Rotation
Pronation
Supination
Horizontal flexion
Horizontal extension
What is sagittal plane of movement
Splits the body between left and right
What movements take place in the sagittal plane
flexion
extension
plantar flexion
dorsi flexion
What is frontal plane of movement
Splits body between anterior (front) and posterior (back)
What movements take place in the frontal plane
Abduction
Adduction
Elevation
Depression
Invasion / exersion
What is an agonist
prime mover, the main muscle responsible for movement
What is an antagonist
The opposite muscle to the agonist. It relaxes when the agonist is contracting, allowing movement to occur at the joint
What is the synergist
Other muscles which may join in and help the agonist with it’s movements
What is a fixator
Where a muscle contracts statically to fix parts of the body to maintain correct or stable position
A muscle can only pull (not push) true or false
True
A skeletal muscle crosses at least one joint true or false
true
A muscle can only work in it’s line of fibre true or false
true
What is the origin and insertion of the bicep
Origin: Scapula
Insertion: Radius
What joints does the bicep cross
Elbow and shoulder
What is the action of the bicep
Flexes the elbow, supinates (rotate so palm is up) forearm
What is the origin and insertion of the tricep
Origin: Scapula and humerus
Insertion: Ulna
What joints does the tricep cross
Elbow and shoulder
What is the action of the tricep
Extends the elbow
What is the origin and insertion of the deltoid muscle
Origin: Clavicle and scapula
Insertion: Humerus
What joints does the deltoid cross
Shoulder
What is the action of the deltoid
abducts arm, assists in shoulder rotation
What is the origin and insertion of lats
Origin: Lumbar and sacral vertebrae, and thoracic vertebrae 7-12
Insertion: humerus
What joints do lats cross
Shoulder
What is the action of the lats
Adducts, extends and inwardly rotates the shoulder
What is the origin and insertion of rhomboids
Origin: 7th cervical vertebra and thoracic vertebrae 1-5
Insertion: Scapula
What joints does the rhomboid cross
Shoulder girdle
What is the action of the rhomboids
Retracts shoulder girdle, inwardly rotates scapula
What is the origin and insertion of traps
Origin: 7th cervical vertebra and all thoracic vertebrae
Insertion: Clavicle and scapula