Muscles LAB Flashcards
Occipitofrontalis
o: occipital
i: skin of eyebrow, nose
a: elevates brows, moves scalp
Orbicularis Oculi
o: maxilla, frontal
i: encircles eye, near origin
a: closes eye
Orbicularis Oris
o: maxilla, mandible
i: lips
a: closes lips
Buccinator
o: Maxilla, mandible
i: angle of mouth
a: compresses cheeks
Zygomaticus
o: zygomatic bone
i: angle of mouth, upper lip
a: elevate angle of mouth, upper lip
Levator Labii Superioris
o: maxilla
i: upper lip, nose
a: elevates upper lip, nose
Depressor anguli oris
o: mandible
i: lower lip near angle
a: depresses angle of mouth
Temporalis
o: temporal aspect of skull
i: mandible
a: raises jaw
Masseter
o: zygomatic arch
i: mandible
a: raises jaw
Pterygoids
o: inferior aspect of skull
i: mandible
a: medial raises jaw; lateral lowers jaw
Sternocleidomastoid
o: sternum, clavicle
i: mastoid process
a: rotate, extends head
Trapezius
o: skull, upper vertebral column
i: scapula
a: extends head, neck
Erector Spinae
o: vertebrae, pelvis
i: superior vertebrae, ribs
a: holds body upright
Deep back muscles
o: vertebrae
i: vertebrae
a: flex or extend trunk
Scalenes
o: cervical vertebrae
i: 1st & 2nd ribs
a: elevate ribs; expand thorax
External Intercostals
o: ribs
i: edge of next rib (inferiorly)
a: compress thorax
Internal Intercostals
o: ribs
i: edge of next rib (superiorly)
a: expand thorax
Rectus abdominis
o: pubis
i: inferior thoracic cage
a: flexes waist
External Abdominal Oblique
o: inferior thoracic cage
i: midline of abdomen
a: compresses abdomen
Internal Abdominal Oblique
o: pelvis
i: midline of abdomen
a: compresses abdomen
Transversus Abdominus
o: vertebrae, pelvis, ribs
i: midline of abdomen
a: compresses abdomen
Trapezius
o: skull, upper vertebral column
i: scapula
a: extends head, neck;rotates scapula
Levator Scapulae
o: vertebrae
i: scapula
a: elevates scapula
Rhomboids
o: vertebrae
i: scapula
a: retract scapula
Serratus Anterior
o: ribs
i: scapula
a: protracts scapula
Pectoralis minor
o: ribs
i: scapula
a: depresses scapula
Pectoralis major
o: ribs, clavicle
i: humerus
a: flexes shoulder; adducts arm
Teres major
o: Scapula
i: humerus
a: extends shoulder; adducts, rotates arm
Latissimus dorsi
o: vertebrae
i: humerus
a: extends shoulder; adducts arm
Infraspinatus
o: scapula
i: humerus
a: extends, rotates arm
Supraspinatus
o: scapula
i: humerus
a: abducts arm
Subscapularis
o: scapula
i: humerus
a: extends, rotates arm
Teres minor
o: scapula
i: humerus
a: adducts, rotates arm
Deltoid
o: scapula, clavicle
i: humerus
a: abducts arm; flexes, extends shoulder
Triceps brachii
o: humerus, scapula
i: ulna
a: extends forearm
Biceps brachii
o: humerus, scapula
i: radius
a: flexes, supinates forearm
Brachialis
o: humerus
i: ulna
a: flexes forearm
Pronators
o: ulna
i: radius
a: pronate forearm
Palmaris longus
o: humerus (medial epicondyle)
i: aponeurosis over palm of hand
a: tightens skin of palm
Flexor carpi ulnaris
o: humerus
i: carpal bone
a: flexes, abducts wrist
Flexor carpi radialis
o: humerus
i: metacarpal bones
a: flexes, abducts wrist
flexor digitorum
o: humerus, ulna, radius
i: phalanges
a: flex fingers
branchioradialis
o: humerus
i: radius (distal)
a: flexes, pronates forearm
supinator
o: ulna
i: radius
a: supinates forearm
Extensor carpi ulnaris
o: humerus
i: metacarpal bones
a: extends, abducts wrist
extensor carpi radialis
o: humerus
i: metacarpal bones
a: extend, abduct wrist
extensor digitorum
o: humerus
i: phalanges
a: extends fingers
iliopsoas
o: ilium, vertebrae
i: femur
a: flexes hip
tensor fasciae latae
o: hip
i: tibia
a: flexes jip; abducts thigh
gluteus maximus
o: hip
i: femur
a: extends hip
gluteus medius
o: hip
i: femur
a: abducts thigh
rectus femoris
o: ilium
i: tibia
a: extends knee; flexes hip
vastus lateralis
o: femur
i: tibia
a: extends knee
vastus medialis
o: femur
i: tibia
a: extends knee
vastus intermedius
o: femur
i: tibia
a: extends knee
sartorius
o: ilium
i: tibia
a: flexes hip & knee; rotates thigh
biceps femoris
o: ischium, femur
i: fibula
a: flexes knee; extends hip
Semimembranosus
o: ischium
i: tibia
a: flexes knee; extends hip
Semitendinosus
o: ischium
i: tibia
a: flexes knee; extends hip
Adductor longus
o: pubis
i: femur
a: adducts thigh
Gracilis
o: pubis
i: tibia
a: adducts thigh
Tibialis anterior
o: tibia
i: metatarsal bones
a: extends ankle
extensor digitorum longus
o: tibia
i: phalanges
a: extends toe joints
Gastrocnemius
o: femur
i: calcaneus
a: flexes ankle
Soleus
o: tibia, fibula
i: calcaneus
a: flexes ankle
Peroneus
o: tibia, fibula
i: tarsal, metatarsal bones
a: flex, evert ankle
Levator ani
o: pubis, ischium
i: sacrum, coccyx
a: elevates anus
ischiocavernosus
o: ischium
i: clitoris or penis
a: compresses base of clitoris or penis
bulbospongiosus
o: bulb of penis/ central tendon of perineum
i: central tendon of perineum/ base of clitoris
a: constricts urethra; assists erectionof penis/ erects clitoris
gluteus maximus
o: hip
i: femur
a: extends thigh
