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
What joints do traps cross
shoulder girdle
Action of traps
elevates shoulders and extends neck, retract scapula, depress scapula
Origin and insertion of pec major
Origin: Clavicle and sternum
Insertion: Humerus
Pec major joints crossed
Shoulder girdle
Action of pec major
Horizontal flexion, adduction and inward rotation of the arm
Origin and insertion of transverse abdominis
Origin: iliac crest, lumbar fascia and cartilage of interior ribs
Insertion: Xiphoid process (distal edge of sternum), linea alba and pubic symphysis
Transverse abdominis joints crossed
Lumbar vertebrae
Transverse abdominis action
pull abdomen in for posture and spine support
Origin and insertion of rectus abdominis
Origin: Pubis
Insertion: Ribs
Rectus abdominis joints crossed
Thoracic and lumbar vertebrae
Rectus abdominis action
flexes thoracic and lumbar spine
Erector spine origin and insertion
Origin: Sacrum, ilium to thorax
Insertion: ribs, vertebra to base of skull
Erector spine joints crossed
vertebrae of spine
Erector spine action
extends the spine, rotates the thoracic spine
origin and insertion or external obliques
Origin: lower ribs
Insertion: Ilium
external obliques joints crossed
vertebrae of spine
External obliques fibre direction
diagonal
External obliques action
Laterally flexes and rotates thoracic spine
Internal obliques origin and insertion
Origin: Ilium
Insertion: Lower ribs
Internal obliques joints crossed
torso and pelvis
Internal oblique action
laterally flexes and rotates thoracic spine
Iliopsoas (inner hip) origin and insertion
Origin: lumbar vertebra and ilium
Insertion: Femur
Iliopsoas joints crossed
hip
Iliopsoas action
flexes the hip
Glutes origin and insertion
Origin: ilium and sacrum
Insertion: Femur
Glutes joints crossed
Hip
Glutes action
extends and outwardly rotates the hip
Abductor origin and insertion
Origin: ilium and sacrum
Insertion: Femure
Abductor joints crossed
Hip
Abductor action
abduct and outwardly rotate the hip
Hamstring origin and insertion
origin: ischium
Insertion: tibia and fibia
hamstring joints crossed
hip and knee
hamstring action
extends the hip, flexes the knee
Tibialis anterior (front of tibia) origin and insertion
origin: tibia
Insertion: 1st metatarsal
tibialis anterior joints crossed
Ankles
tibialis anterior action
dorsiflexes in the ankle
adductor origin and insertion
origin: pubis and ischium
Insertion: femur
adductor joints crossed
hip
adductor action
adduct and inwardly rotate hip
quads origin and insertion
origin: femur and ilium
insertion: tibia
quads joints crossed
hip and knee
quads action
extends the knee
gastrocnemius (calf) origin and insertion
origin: femur
insertion: calcaneus (heel)
gastrocnemius (calf) joints crossed
ankle and knee