Muscle station Flashcards
(29 cards)
Introduce Gluteus maximus
origin/insertion/action/innervation
(blank view) Glute max is one of the superficial gluteal muscles
Origin
- posterior to the posterior gluteal line of ilium
- posterior surface of sacrum and coccyx
Insertion
- most fibers insert into the iliotibial tract
- remaining fibers insert into the gluteal tuberosity
Action
-extends thigh
-lateral rotation of the thigh
-assists the body in rising from a sitting position
Nerve supply
-inferior gluteal nerve
Introduce gluteus medius
origin/insertion/action/innervation
(blank view) Glute medius is one of the superficial gluteal muscles
Origin
- external surface of ilium between anterior and posterior gluteal lines
Insertion
-lateral surface of greater trochanter
Action
-abducts thigh
-medially rotates thigh
-keeps pelvis level while walking during its swing phase
Nerve supply
-superior gluteal nerve
Introduce gluteus minimus
origin/insertion/action/innervation
(blank view) Glute minimus is one of the superficial gluteal muscles
Origin
-external surface of ilium between anterior and inferior gluteal lines
Insertion
-anterior surface of greater trochanter
Action
-abducts thigh
-medially rotates thigh
-keeps pelvis level while walking during its swing phase
Nerve supply
-superior gluteal nerve
Introduce the piriformis
origin/insertion/action/innervation
(blank view) Piriformis is one of the deep gluteal muscles Origin -anterior surface of sacrum -sacrotuberous ligament Insertion -superior border of greater trochanter Action -laterally rotates extended thigh -abducts flexed thigh -steadies femoral head in acetabulum Nerve supply Branches of anterior rami S1 and S2
Introduce the obturator internus
origin/insertion/action/innervation
(blank view) Obturator internus is one of the deep gluteal muscles Origin - obturator foramen insertion - trochanteric fossa Action -laterally rotates extended thigh -abducts flexed thigh -steadies femoral head in acetabulum Nerve supply Nerve to obturator internus
Introduce the quadratus femoris
origin/insertion/action/innervation
(blank view) Quadratus Femoris is one of the deep gluteal muscles Origin -lateral border of ischial tuberosity Insertion -Quadrate tubercle on the intertrochanteric crest of femur Action -laterally rotates extended thigh -abducts flexed thigh -steadies femoral head in acetabulum Nerve supply Nerve to quadratus femoris
Introduce Coccygeus
origin/insertion/action/innervation
(blank view) coccygeus is a muscle of the pelvic floor Origin -Ischial spine Insertion -inferior sacrum and coccyx Action -supports pelvic viscera -flexes coccyx Nerve supply - S4 and S5 spinal nerves
Introduce iliopsoas
origin/insertion/action/innervation
(blank view) Iliopsoas is a muscle of the anterior compartment of the thigh
Origin
-Iliacus: iliac crest, iliac fossa, ala of sacrum and anterior sacro-iliac ligament
-psoas major: sides of T12-L5 vertebrae and transverse processes of all lumbar vertebrae
Insertion
-Iliacus: tendon of psoas major and lesser trochanter
-Psoas major: lesser trochanter of femur
Action
-Flexes thigh at hip joint
-Stabilises hip joint
Nerve supply
-Iliacus: femoral nerve
-Psoas major: ventral rami of lumbar nerves L1-L3
Introduce Rectus Femoris
origin/insertion/action/innervation
(blank view) Rectus Femoris is a muscle of the anterior compartment of the thigh specifically belonging to the quadriceps group Origin -Anterior inferior iliac spine Insertion -tibial tuberosity via the quadriceps tendon -base of patella Action -Extends leg at knee joint -hip flexion (only rectus femoris) Nerve supply -femoral nerve
Introduce Vastus lasteralis
origin/insertion/action/innervation
(blank view) Vastus Lateralis is a muscle of the anterior compartment of the thigh specifically belonging to the quadriceps group Origin -greater trochanter of femur -lateral lip of linea aspera of femur Insertion -tibial tuberosity via the quadriceps tendon -base of patella Action -Extends leg at the knee joint Nerve supply -femoral nerve
Introduce Vastus medialis
origin/insertion/action/innervation
(blank view) Vastus medialis is a muscle of the anterior compartment of the thigh specifically belonging to the quadriceps group
Origin
-intertrochanteric line (anterior) of femur
-medial lip of linea aspera of femur
Insertion
-tibial tuberosity via the quadriceps tendon
-base of patella
Action
-extends leg at the knee joint
Nerve supply
-femoral nerve
Introduce Sartorius
origin/insertion/action/innervation
(blank view) Sartorius is a muscle of the anterior compartment of the thigh Origin -Anterior superior iliac spine Insertion -Pes anserinus Action -Flexion of hip -Abduction of hip -External rotation of hip -slight flexion of knee Nerve supply -femoral nerve
Introduce Biceps femoris
origin/insertion/action/innervation
(blank view) Biceps Femoris is a muscle of the posterior compartment of the thigh specifically belonging to the hamstring classification
Origin
-Long head: ischial tuberosity
-Short head: linea aspera and lateral supracondylar line of femur
Insertion
-Head of the fibula
Action
-Extends thigh
-flexes leg
-laterally rotates leg when knee is flexed
Nerve supply
Long head: tibial division of sciatic nerve
Short head: common fibular division of sciatic nerve
Introduce Semitendinosus
origin/insertion/action/innervation
(blank view) Semitendinosus is a muscle of the posterior compartment of the thigh specifically belonging to the hamstring classification Origin -ischial tuberosity Insertion - pes anserinus Action -extends thigh -flexes leg -medially rotates leg when knee is flexed Nerve supply -Tibial division of sciatic nerve
Introduce Adductor magnus
origin/insertion/action/innervation
(blank view) Adductor magnus is a muscle of the medial compartment of the thigh
Origin
Adductor part: inferior pubic and ischial ramus
Hamstring part: ischial tuberosity
Insertion
Adductor part: Gluteal tuberosity, linea aspera and medial supracondylar line
Hamstring part: adductor tubercle of femur
Action
Adductor part: adducts thigh, some flexion
Hamstring part: extends thigh
Nerve supply
Adductor part: Obturator nerve
Hamstring part: tibial division of sciatic nerve
Introduce Adductor Longus
origin/insertion/action/innervation
(blank view) Adductor longus is a muscle of the medial compartment of the thigh Origin -body of pubis, inferior to pubic crest Insertion -Middle 1/3 of linea aspera of femur Action -adducts thigh Nerve supply -Obturator nerve
Introduce Gracilis
origin/insertion/action/innervation
(blank view) Gracilis is a muscle of the medial compartment of the thigh Origin -body and inferior ramus of pubis Insertion -pes anserinus Action -adducts thigh -flexes leg -weak medial rotation of leg Nerve supply -Obturator nerve
Introduce Tibialis Anterior
origin/insertion/action/innervation
(blank view) Tibialis anterior is a muscle of the anterior compartment of the leg Origin -lateral condyle of tibia -proximal 1/2 of shaft of tibia -interosseus membrane Insertion -middle cuneiform -base of 1st metatarsal Action -Dorsi flexion of ankle -inversion of foot Nerve supply -deep fibular nerve
Introduce extensor digitorum longus
origin/insertion/action/innervation
(blank view) Extensor digitorum longus is a muscle of the anterior compartment of the leg Origin -lateral condyle of tibia -proximal 3/4 of fibula -interosseus membrane Insertion -middle and distal phalanges of toes 2-5 Action -extends toes 2-5 -dorsi flexion of ankle Nerve supply Deep fibular nerve
Introduce extensor hallucis longus
origin/insertion/action/innervation
(blank view) Extensor hallucis longus is a muscle of the anterior compartment of the leg Origin -middle part of anterior surface of fibula -interosseus membrane Insertion -base of distal phalanx of 1st toe Action -extends 1st toe -dorsi flexion of ankle Nerve supply -deep fibular nerve
Introduce fibularis longus
origin/insertion/action/innervation
(blank view) Fibularis longus is a muscle of the lateral compartment of the leg Origin -head of fibula -proximal 2/3 of fibula Insertion -medial cuneiform and base of 1st metatarsal Action -eversion of foot -weak plantar flexion of ankle Nerve supply -superficial fibular nerve
Introduce fibularis brevis
origin/insertion/action/innervation
(blank view) Fibularis brevis is a muscle of the lateral compartment of the leg Origin -distal 2/3 of fibula Insertion -tuberosity of 5th metatarsal Action -Eversion of foot -weak plantar flexion of ankle Nerve supply -superficial fibular nerve
Introduce Soleus
origin/insertion/action/innervation
(blank view) Soleus is a superficial muscle of the posterior compartment of the leg Origin -head of fibula -soleal line -middle 1/3 of medial border of tibia Insertion -posterior surface of calcaneus via achilles tendon Action -plantar flexion of ankle Nerve supply -tibial nerve
Introduce Gastrocnemius
origin/insertion/action/innervation
(blank view) Gastrocnemius is a superficial muscle of the posterior compartment of the leg Origin Lateral head: lateral condyle of femur Medial head: popliteal surface of femur superior to medial condyle Insertion -posterior surface of calcaneus via achilles tendon Action -plantar flexion of ankle -knee flexion -raises heel in walking Nerve supply -tibial nerve
