Musclular System Flashcards
Memorize the parts and its origin, insertion and action
Frontalis
Forehead Muscle
Frontalis Origin
Cranial Aponeurosis
Frontalis Insertion
Skin of Eyebrows
Frontalis Action
Raises Eyebrows
Orbicularis Oculi
Eye muscle
Orbicularis Oculi Origin
Frontal bone, Maxilla
Orbicularis Oculi Insertion
Tissue around eyes
Orbicularis Oculi Action
Blinks and closes eyes
Orbicularis Oris
Mouth muscle
Orbicularis Oris Origin
Maxilla, Mandible
Orbicularis Oris Insertion
Muscle and skin around mouth
Orbicularis Oris Action
Closes and protrudes mouth
Temporalis
Temporal muscle
Temporalis Origin
Temporal bone
Temporalis Insertion
Mandible
Temporalis Action
Closes jaw
Zygomaticus
Cheek muscle
Zygomaticus Origin
Zygomatic bone
Zygomaticus Insertion
Skin and muscle at corner of lips
Zygomaticus Action
Raises corner of mouth
Masseter
Muscle near the cheeks
Masseter Origin
Temporal bone
Masseter Insertion
Mandible
Masseter Action
Closes jaw
Buccinator
Muscle under the cheeks
Buccinator Origin
Mandible near molars
Buccinator Insertion
Orbicularis Oris
Buccinator Action
Holds food between teeth during chewing
Sternocleidomastoid
Neck muscle
Sternocleidomastoid Origin
Sternum, clavicle
Sternocleidomastoid Insertion
Mastoid process (Temporal bone)
Sternocleidomastoid Action
Flexes neck, laterally rotates neck
Platysma
Frontal neck muscle
Platysma Origin
Connective tissue covering of superior chest muscles
Platysma Insertion
Tissue around mouth
Platysma Action
Tenses skin of neck
Pectoralis Major
Chest muscle
Pectoralis Major Origin
Sternum, clavicle, 1st-6th ribs
Pectoralis Major Insertion
Proximal Humerus
Pectoralis Major Action
Adducts, flexes humerus
Rectus Abdominis
Straight abdominal muscle
Rectus Abdominis Origin
Pubis
Rectus Abdominis Insertion
Sternum, 5th-7th ribs
Rectus Abdominis Action
Flexes vertebral column
External Oblique
Oblique abdominal muscle
External Oblique Origin
lower 8 ribs
External Oblique Insertion
Iliac crest
External Oblique Action
Flexes and rotates vertebral column
Biceps Brachii
Bicep muscle
Biceps Brachii Origin
Scapula or shoulder girdle
Biceps Brachii Insertion
Proximal radius
Biceps Brachii Action
Flexes elbow and supinates forearm
Deltoid
Shoulder muscle
Deltoid Origin
Scapular, spine, clavicle
Deltoid Insertion
Humerus
Deltoid Action
Abducts humerus
Iliopsoas
Pelvis muscle
Iliopsoas Origin
Ilium, lumbar vertebrae
Iliopsoas Insertion
Femur (lesser trochanter)
Iliopsoas Action
Flexes hip
Adductor Muscles
Front thigh muscle
Adductor Muscles Origin
Pelvis
Adductor Muscles Insertion
Proximal femur
Adductor Muscles Action
Adduct, medially rotate thigh
Sartorius
Thigh muscle
Sartorius Origin
Ilium
Sartorius Insertion
Proximal tibia
Sartorius Action
Flexes thigh on hip
Quadriceps group
Vastus Medialis, Vastus Intermedius, Vastus Lateralis, Rectus Femoris
Vasti Origin
Femur
Vasti Insertion
Tibial tuberosity via patellar ligament
Vasti Action
Extend knee
Rectus Formalis Origin
Pelvis
Rectus Formalis Insertion
Tibial tuberosity via patellar ligament
Rectus Formalis Action
Extend knee, flexes hip on thigh
Tibialis Anterior
Tibial muscle
Tibialis Anterior Origin
Proximal tibia
Tibialis Anterior Insertion
1st cuneiform (tarsal), 1st metatarsal of foot
Tibialis Anterior Action
Dorsiflexes, inverts foot
Extensor Digitorum Longus
Leg muscle
Extensor Digitorum Longus Origin
Proximal tibia, fibula
Extensor Digitorum Longus Insertion
Distal toes 2-5
Extensor Digitorum Longus Action
Extends toes
Fibularis Muscles
Fibular muscle
Fibularis Muscles Action
Fibula
Fibularis Muscles Insertion
Metatarsals of foot
Fibularis Muscles Action
Plantar flex, evert foot
Brachialis
Muscle near biceps
Brachialis Origin
Distal humerus
Brachialis Insertion
Proximal ulna
Brachialis Action
Flexes elbow
Occipitalis
Back head muscle
Occipitalis Origin
Cranial and occipital bones
Occipitalis Insertion
Cranial aponeurosis
Occipitalis Action
Fixes aponeurosis, pulls scalp posteriorly
Trapezius
Upper back muscle
Trapezius Origin
Occipital bones, all cervical and thoracic vertebrae
Trapezius Insertion
Raises, retracts, rotates scapula
Latissimus Dorsi
Back muscle
Latissimus Dorsi Origin
Lower spine, iliac crest
Latissimus Dorsi Insertion
Proximal humerus
Latissimus Dorsi Action
Extends, adducts humerus
Erector Spinae
Spine muscle
Erector Spinae Origin
Iliac crest, 3-12 ribs, vertebrae
Erector Spinae Insertion
Ribs, thoracic and cervical vertebrae
Erector Spinae Action
Extends, laterally flexes spine
Quadratus Lumborum
Low back muscle
Quadratus Lumborum Origin
Iliac crest, lumbar fascia
Quadratus Lumborum Insertion
Transverse processes of upper lumbar vertebrae
Quadratus Lumborum Action
Flexes spine laterally, extends spine
Triceps Brachii
Tricep muscle
Triceps Brachii Origin
Shoulder girdle, proximal humerus
Triceps Brachii Insertion
Olecranon process of ulna
Triceps Brachii Action
Extends elbow
Flexor Carpi Radialis
Radius forearm
Flexor Carpi Radialis Origin
Distal humerus
Flexor Carpi Radialis Insertion
2nd-3rd metacarpals
Flexor Carpi Radialis Action
Flexes wrist, abducts hands
Flexor Carpi Ulnaris
Ulna forearm
Flexor Carpi Ulnaris Origin
Distal humerus, posterior ulna
Flexor Carpi Ulnaris Insertion
Carpals of of wrist and 5th metacarpal
Flexor Carpi Ulnaris Action
Flexes wrist, adducts hand
Flexor Digitorum Superficialis
wrist muscle
Flexor Digitorum Superficialis Origin
Distal Humerus, ulna, radius
Flexor Digitorum Superficialis Insertion
Middle phalanges of 2nd-5th fingers
Flexor Digitorum Superficialis Action
Flexes wrist and fingers
Extensor Carpi Radialis
Forearm muscle
Extensor Carpi Radialis Origin
Humerus
Extensor Carpi Radialis Insertion
Base of 2nd-3rd metacarpals
Extensor Carpi Radialis Action
Extends wrists, abducts hand
Extensor Digitorum
Finger muscle
Extensor Digitorum Origin
Distal humerus
Extensor Digitorum Insertion
Distal phalanges of 2nd-5th fingers
Extensor Digitorum Action
Extend fingers
Gluteus Maximus
Main buttocks
Gluteus Maximus Origin
Sacrum, ilium
Gluteus Maximus Insertion
Proximal fumer (glutel tuberosity)
Gluteus Maximus Action
Extends hips
Gluteus Medius
Middle Buttocks
Gluteus Medius Origin
Ilium
Gluteus Medius Insertion
Proximal femur
Gluteus Medius Action
Abducts thigh, steadies pelvis during walking
Hamstring Muscles
Biceps Femoris, Semitendinosus, Semitindinosus, Semimembranosus
Hamstring Muscles Origin
Ischial tuberosity
Hamstring Muscles Insertion
Proximal tibia (head of fibula in the case of biceps femoris)
Hamstring Muscles Action
Flex knee, extend hips
Gastrocnemius
Posterior leg muscle
Gastrocnemius Origin
Distal femur
Gastrocnemius Insertion
Calcaneus
Gastrocnemius Action
Plantar flexes foot, flexes knee
Soleus
Side leg muscle
Soleus Origin
Proximal tibia, fibula
Soleus Insertion
Calcaneus
Soleus Action
Plantar flexes foot