Muscles Flashcards
Tibialis Anterior
O: Tibia and internal oblique membrane
I: med. cuneiform and 1st metatarsal
N: Deep peroneal
A: dorsiflex, extend toes
Extensor Hallucis Longus
O: Fibula and internal oblique membrane
I: distal phalanx of 1st toe
N: Deep peroneal
A: dorsiflex, extend toes
Extensor Digitorum Longus
O: Tibia, fibula, and internal oblique membrane
I: Middle and distal phalanges of toes 2-5
N: Deep peroneal
A: dorsiflex, extend toes
Peroneus Tertius
O: Fibula and internal oblique membrane
I: 5th metatarsal base
N: Deep peroneal
A: dorsiflex, extend toes
Peroneus Longus
O: Lateral fibula
I: base of 1st metatarsal and medial cuneiform
N: Superficial peroneal
A: Evert
Peroneus Brevis
O: Lateral fibula
I: Tuberosity of 5th metatarsal
N: Superficial peroneal
A: Evert
Gastrocnemius
O: Lateral and medial condyles of femur
I: Calcaneus
N: Tibial
A: Knee flexion, plantar flexion
Soleus
O: Fibula, soleal line of tibia
I: Calcaneus
N: Tibial
A: Plantar flexion
Plantaris
O: Lateral supracondylar line of femur
I: Calcaneus
N: Tibial
A: Knee and plantar flexion, proprioception
Popliteus
O: Lateral condyle of femur
I: Superior to soleal line of tibia
N: Tibial
A: unlocks knee, weak flexion
Flexor Hallicus Longus
O: Fibula and internal oblique membrane
I: Base of 1st distal phalanx
N: Tibial
A: Plantar flexion
Flexor Digitorum Longus
O: Tibia inferior to soleal line
I: Base of distal phalanges of toes 2-5
N: Tibial
A: Plantar flexion
Tibialis Posterior
O: Tibia, fibula, and internal oblique membrane
I: Navicular, cuneiforms, cuboid, bases of 2-4 metatarsals
N: Tibial
A: Plantar flexion
Sartorius
O: ASIS
I: Superior part of medial tibia
N: Femoral
A: Hip and knee flexion
Rectus Femoris
O: AIIS
I: Patella
N: Femoral
A: Hip flexion, knee extension
Vastus Lateralis
O: Linea aspera
I: Patella
N: Femoral
A: Hip flexion, knee extension
Vastus Medialis
O: Linea aspera
I: Patella
N: Femoral
A: Hip flexion, knee extension
Vastus Intermedius
O: Body of femur
I: Patella
N: Femoral
A: Hip flexion, knee extension
Articularis Genu
O: Anterior part of femur
I: Synovial membrane of knee
N: Femoral
A: Pull suprapatellar bursa during knee extension
Psoas Major
O: Lumbar vertebrae
I: Lesser trochanter
N: Femoral
A: Hip flexion
Iliacus
O: Iliac crest and fossa
I: Lesser trochanter
N: Femoral
A: Hip flexion
Tensor Fascia Latae
O: ASIS
I: IT band
N: Femoral
A: Hip flexion
Pectineus
O: Superior ramus of pubis
I: Pectineal line of femur
N: Femoral and obturator
A: Adduction
Adductor Longus
O: Body of pubic bone
I: Linea aspera
N: Obturator
A: Adduction
Adductor Brevis
O: Inferior ramus of pubic bone
I: Linea aspera
N: Obturator
A: Adduction
Adductor Magnus
O: Ischiopubic ramus and ischial tuberosity
I: Linea aspera, adductor tubercle of femur
N: Obturator, tibial
A: Adduction
Gracilis
O: Inferior ramus of pubis
I: Superior part of medial surface of tibia
N: Obturator
A: Adduction
Obturator Externus
O: Margins of obturator foramen and obturator membrane
I: Trochanteric fossa of femur
N: Obturator
A: Adduction
Biceps Femoris
O: Ischial tuberosity, linea aspera
I: Fibular head
N: Tibial
A: Hip extension, knee flexion
Semitendinosus
O: Ischial tuberosity
I: Medial surface of upper tibia
N: Tibial
A: Hip extension, knee flexion
Semimembranosus
O: Ischial tuberosity
I: Medial tibial condyle
N: Tibial
A: Hip extension, knee flexion
Gluteus Maximus
O: Sacrotuberus ligament, ilium posterior to posterior gluteal line, sacrum, coccyx
I: Gluteal tuberosity and IT band
N: Inferior gluteal
A: Hip extension, lateral rotation
Gluteus Medius
O: Ilium between anterior and posterior gluteal line
I: Greater trochanter
N: Superior gluteal
A: Abduction, medial rotation, stops sagging
Gluteus Minimus
O: Ilium between anterior and inferior gluteal lines
I: Greater trochanter
N: Superior gluteal
A: Abduction, medial rotation
Piriformus
O: Anterior surface of sacrum
I: Greater trochanter
N: S1, S2
A: Lateral rotation
Superior Gemellus
O: Ischial spine
I: Tendon of obturator internus
N: Nerve to obturator internus
A: Lateral rotation, extension, abduction of flexed thigh
Obturator Internus
O: Obturator membrane and surrounding bone
I: Greater trochanter
N: Nerve to obturator internus
A: Lateral rotation, extension, abduction of flexed thigh
Inferior Gemellus
O: Ischial tuberosity
I: Tendon of obturator internus
N: Nerve to quadratus femoris
A: Lateral rotation
Quadratus Femoris
O: Ischial tuberosity
I: Intertrochanteric crest
N: Nerve to quadratus femoris
A: Lateral rotation
Levator Ani
Puborectalis, Pubococcygeus
Iliococcygeus
O/I: Floor of pelvis
A: Elevate floor of pelvis
Coccygeus
O: Sacrospinous ligament and ischial spine
I: Coccyx and sacrum
N: S4, S5
Abductor Hallucis
O: Calcaneal tuberosity
I: Base of 1st proximal phalanx
N: Medial plantar
A: Abduct big toe
Flexor Digitorum Brevis
O: Calcaneal tuberosity
I: Middle phalanx of toes 2-5
N: Medial plantar
A: Flex toes 2-5
Abductor Digiti Minimi
O: Calcaneal tuberosity
I: Base of 5th proximal phalanx
N: Lateral plantar
A: Flexion and abduction of little toe
Flexor Digitorum Longus
O: Posterior surface of body of tibia
I: Base of distal phalanx of toes 2-5
N: Tibial
A: Flex toes
Flexor Hallicus Longus
O: Posterior middle 1/3 of fibula
I: base of distal phalanx of big toe
N: Tibial
A: Flex big toe, flex ankle
Quadratus Plantae
O: Calcaneus
I: Tendon of flexor digitorum longus
N: Lateral plantar
A: Assist flexor digitorum longus in flexion
Lumbricals (4)
O: Tendon of flexor digitorum longus
I: Flexor sheath of toes 2-5
N: Medial and lateral plantar
A: Flex MP joints, extend interphalangeal joints
Flexor Digiti Minimi Brevis
O: Base of 5th metatarsal
I: 5th proximal phalanx
N: Superficial branch of lateral plantar
A: Flex and adduct little toe
Adductor Hallucis
O: Base of metatarsal 2-4, MP joint ligaments
I: base of 1st proximal phalanx
N: Lateral plantar
A: Adduct big toe
Flexor Hallucis Brevis
O: Cuboid
I: Base of 1st proximal phalanx
N: Medial plantar
A: Flex big toe
Plantar Interossei (3)
O: Base of metatarsals 3-5
I: Base of proximal phalanx 3-5
N: Lateral plantar
A: Adduct toes
Dorsal Interossei (4)
O: Adjacent sides of metatarsals 1-5
I: Proximal phalanx of toes 2-4
N: Lateral plantar
A: Abduct toes
Detrusor
lines bladder
involuntary
A: empty bladder
External urethral sphincter
voluntary
tonically active
relaxation causes urination