Muscles Flashcards
biceps brachii
o: coracoid process and tubercle above glenoid cavity of scapula
i: radial tuberosity of radius
a: flexes elbow and supinates forearm and hand
sternocleidomastoid
o: anterior surface of sternum and upper surface of clavicle
i: mastoid process of temporal bone
a: each laterally flexes neck to the same side, rotates head to opposite side. Together they flex neck forward; also aid in forceful inhalation
epicranius
o: occipital bone
i: skin around eyes
a: elevates eyebrows as when surprised
masseter
o: zygomatic arch
i: lateral surface of ramus of mandible
a: elevates and protracts mandible
rectus abdominis
o: crest of pubis and pubic symphysis
i: xiphoid process of sternum and ribs 5-7
a: compresses abdomen, flexes vertebral column
gastrocnemius
o: lateral and medial condyles of femur
i: posterior surface of calcaneus
a: plantar flexion of foot, flexes knee
trapezius
o: occipital bone, ligamentum nuchae,
and spinous processes of 7th cervical and all thoracic vertebrae
i: clavicle, spine, and acromnion process
a: rotates and retracts scapula; superior portion elevates scapula; inferior portion depresses scapula
gluteus maximus
o: sacrum, coccyx, and posterior surface of ilium
i: posterior surface of femur and fascia
a: extends hip
orbicularis oculi
o: maxillary and frontal bones
i: skin around eye
a: closes eye as in blinking
pectoralis minor
o: anterior surface of ribs 3-5
i: coracoid process of scapula
a: depresses and protracts scapula, elevates ribs during forceful inhalation
rhomboideus major
o: spinous process of upper thoracic vertebrae
i: medial border of scapula
a: retracts, elevates, and rotates scapula
biceps femoris
o: ischial tuberosity and linea aspera of femur
i: head of fibula
a: flexes knee, rotates leg laterally, and extends hip
rectus femoris
o: anterior superior iliac spine and margin of acetabulum
i: patella by tendon, which continues as patellar ligament to tibial tuberosity
a: extends knee, flexes hip
gracilis
o: lower edge of pubic symphysis
i: proximal, medial surface of tibia
a: adducts thigh and flexes knee
orbicularis oris
o: muscle near the mouth
i: skin of central lip
a: closes lips, protrudes lips as for kissing
zygomaticus
o: zygomatic bone
i: skin and muscle at corner of mouth
a: elevates corner of mouth as when smiling
temporalis
o: temporal bone
i: coronoid process and anterior rams of mandible
a: elevates and retracts mandible
latissimus dorsi
o: spine of sacral, lumbar, and lower thoracic vertebrae, iliac crest, and lower rib
i: intertubercular sulcus of humerus
a: extends shoulder, adducts, and rotates arm medially, or depresses and retracts shoulder
deltoid
o: acromion process, spine of the scapula and the clavicle
i: deltoid tuberosity of humerus
a: lateral portion abducts arm; anterior portion flexes shoulder; posterior portion extends shoulder
tibilias anterior
o: lateral condyle and lateral surface of tibia
i: tarsal bone (medial cuneiform) and first metatarsal
a: dorsiflexion and inversion of foot
soleus
o: head and shaft of fibula and posterior surface of tibia
i: posterior surface of calcaneus
a: plantar flexion of foot
supraspinatus
o: supraspinous fossa of scapula
i: greater tubercle of humerus
a: abducts arm
tensor fascia latae
o: anterior iliac crest
i: iliotibial tract (fascia of thigh)
a: abducts thigh
vasut lateralis
o: greater trochanter and posterior surface of femur
i: patella by tendon, which continues as patellar ligament to tibial tuberosity
a: extends knee
lateral pterygoid
o: sphenoid bone
i: anterior surface of mandibular condyle
a: depresses and protracts mandible and moves it from side to side
supinator
o: lateral epicondyle of humerus and crest of ulna
i: anterior and lateral surface of radius
a: rotates forearm laterally; supinates forearm and hand
pronator teres
o: medial epicondyle of humerus and coronoid process of ulna
i: lateral surface of radius
a: rotates forearm medially; pronates forearm and hand
psoas major
o: bodies and transverse processes of lumbar vertebrae
i: lesser trochanter of femur
a: flexes hip
iliacus
o: iliac fossa of ilium
i: lesser trochanter of femur
a: flexes hip
sartorius
o: anterior superior iliac spine
i: medial surface of tibia
a: flexes knee and hip, abducts and rotates thigh laterally, and rotates leg medially
triceps brachii
o: tubercle below glenoid cavity and lateral and posterior surfaces of humerus
i: olecranon process of ulna
a: extends elbow
pectoralis major
o: clavicle, sternum, and costal cartilages of upper ribs
i: intertubercular sulcus of humerus
a: flexes shoulder, adducts, and rotates arm medially
coracobrachialis
o: coracoid process of scapula
i: medial mid-shaft of humerus
a: flexes shoulder and adducts arm
brachioradiali
o: distal lateral end of humerus
i: lateral surface of radius above styloid process
a: flexes elbow
subscapularis
o: anterior surface of scapula
i: lesser tubercle of humerus
a: rotates arm medially
plantaris
o: femur
i: calcaneus
a: plantar flexion of foot, flexes knee
teres major
o: lateral border of scapula
i: intertubercular sulcus of humerus
a: extends shoulder, adducts, and rotates arm medially
infraspinatus
o: infraspinous fossa of scapula
i: greater tubercle of humerus
a: rotates arm laterally
levator scapulae
o: tranvsers processes of cervical vertebrae
o: medial border of scapula
a: elevates scapuls
buccinator
o: alveolar process of maxilla and mandible
i: orbicularis oris
a: compresses cheeks
platysma
o: fascia in upper chest
i: skin and muscles below mouth; mandible
a: depresses lower lip and angle of mouth as when pouting
internal oblique
o: iliac crest and inguinal ligament
i: lower 3-4 ribs, line alba and crest of pubis
a: compresses abdomen, flexes and rotates vertebral column
external oblique
o: outer surface of lower 8 ribs
i: outer lip of iliac crest and line alba
a: compresses abdomen, flexes and rotates vertebral column
brachialis
o: anterior surface of humerus
i: coronoid process of ulna
a: flexes elbow
teres minor
o: lateral border of scapula
i: greater tubercle of humerus
a: rotates arm laterally
adductor magnus
o: ischial tuberosity
i: posterior surface of femur
a: adducts thigh, posterior portion extends and anterior portion flexes the hip
adductor longus
o: pubic bone near pubic symphysis
i: posterior surface of femur
a: adducts thigh and flexes hip
gluteus medius
o: lateral surface of ilium
i: greater trochanter of femur
a: abducts and rotates thigh medially
vastus medialis
o: medial surface of femur
i: patella by tendon, which continues as patellar ligament to tibial tuberosity
a: extends knee
semimembranosus
o: ischial tuberosity
i: medial condyle of tibia
a: flexes knee, rotates leg medially and extends hip
semitendinosus
o: ischial tuberosity
i: proximal, medial surface of tibia
a: flexes knee, rotates leg medially, and extends hip
Which muscles share an insertion of the greater tubercle?
Supraspinatus, Infaspinatus, and Teres Minor
Which muscles share an insertion of the intertubercular groove?
Pectoralis major, teres major, and latissimus dorsi
Which muscles share an insertion of the lesser trochanter
Psoas major and the iliacus
Which muscles share an origin of the ischial tuberosity
biceps femoris, semitendinosus, semimembranous, and adductor magnus
Which muscles share an insertion of the patellar tendon ligament to the tibial tuberosity?
Rectus femoris, vastus lateralis vastus medialis
Which muscles share an insertion of the calcaneus
gastrocnemius, soleus, and plantaris
Which muscles share an insertion of the medial border of the scapula?
Rhomboid major, and elevator scapulae
