Structure recognition review- muscles Flashcards
Trapezius on scapula
elevation/depression, retraction
Rhomboids
elevates, retraction scapula
Serratus anterior on scapula
protraction/ depression
Pectoralis Minor on scapula
depress/protract scapula
Pectoralis major on scapula
protraction
Latissimus dorsi on scapula
depression
Deltoids
shoulder flex/ex, abduction
Rotator cuff
align glenohumeral joint; arm abduction, external rotation, internal rotation
Biceps Brachii
supinator- elbow flexion
Brachialis
pronator- elbow flexion
Brachioradialis
halfway- elbow flexion
Triceps
elbow extension
Superficial layer posterior compartment of forearm
wrist extensors
Mid/deep layers posterior compartment
finger extensors/abductors
Superficial layer anterior compartment of forearm
wrist flexors, pronators
Deep layer anterior compartment of forearm
finger flexors
Thenar group
thumb movement
Mesothenar
2-4 finger movement
Hypothenar
little finger movement
Lumbricals
flex MCP joints, extend IP joints
Interosseous muscles
ad/ab at MCP joints
Gluteus maximus
external rotation, hip extension
not used in walking
used in running and climbing
powerful hip extensor from flexed position
Gluteus medias
abduct, internally rotate
Gluteus minimus
abduct, internally rotate
Piriformus, Obturator internus, obturator externus
external rotation
Sartorius
hip flexion, abduction, lateral rotation; knee flexion
Quadriceps
flex hip, extend knee
Hamstrings
extend hip, flex knee, rotation of knee while flexed
Adductors
powerful adduction
Anterior leg
ankle, foot and toe dorsiflexion
Deep posterior leg
plantarflexion foot and toes
Superficial posterior leg
plantarflexion of ankle
Lateral leg
eversion
Temporalis
biting
Masseter
chewing
Pterygoids
grinding and protraction of mandible
Erector spinae
spine extension, spine side flexion
Rectus abdominis
spine flexion
External oblique
trunk rotation
Internal oblique
fibres perpendicular to external oblique- rotation
Transverse abdominis
trunk stabilisation
Diaphragm
descends rib cage increasing thoracic cavity volume
Scalene
pull rib cage up
Intercostal
forced expiration and inspiration
trapezius on shoulder
abduction
serratus anterior on ribs
elevation
pectoralis minor on ribs
elevation
pec major on shoulder
ab/ad, flexion, internal rotation
pec major on arm
adduction
pec major on ribs
elevation
lat dorsi on shoulder
ab/ad, extension, internal rotation
lat dorsi on arm
arm adduction, extension
lat dorsi on trunk
side flexion
ilio-psoas
hip flexor
psoas major and illiacus
help balance lower back when standing and walking