Muscles Of The Lower Limb Flashcards
Iliopsoas
What is it?
Flexors of the hip
Mention the 3 muscles found in the iliopsoas
1) psoas major
2) psoas minor
3) iliacus
Which muscle is involved in maintaining upright posture?
Psoas major
What do the gluteal muscles do?
Extend and rotate the hip
Mention the 3 gluteal muscles
1) gluteus maximus
2) gluteus medius
3) gluteus minimus
Tensor fascia latae
Lateral hip muscle - frequently visible and palpable flexor and medial rotator of the hip joint.
Inserts into this fibrous band, tensing it.
Mention the 6 deep lateral rotator muscles
1) Piriformis
2) Obturator internus
3) Obturator externus
4) Quadratus femoris
5) Gemellus superior
6) Gemellus inferior
What does the quadriceps femoris do?
Extends the knee joint and help stabilize the knee
Global mobilizers
What does the sartorius muscle do?
Flexes the knee and hip
Mention the four heads of the quadriceps femoris
1) rectus femoris
2) vastus lateralis
3) vastus intermedius
4) vastus medialis
Mention the Medial thigh muscles
1) adductors
Adductor brevis
Adductor longus
Adductor magnus
2) gracilis
3) pectineus
4) obturator externus
What do the medial thigh muscles do?
Adduct & rotate the hip
Posterior thigh - what do the hamstrings do?
Knee flexion & thigh extension
Mention the 3 hamstring muscles
1) semimembranosus (medial)
2) semitendinosus
3) biceps femoris (lateral)
What do the Muscles of the anterior lower leg do?
Dorsiflex the ankle
Mention the muscles of the anterior lower leg
1) tibialis anterior
2) extensor digitorum longus - extends toe 2-5
3) extensor hallucis longus - extends big toe
4) Fibularis (peroneus) tertius
What do the muscles of the lower lateral leg do?
Plantarflex and evert the foot while stabilizing the ankle
Mention the two muscles of the lower lateral leg
1) fibularis (peroneus) longus
2) fibularis (peroneus) brevis
What do the superficial lower posterior muscles do?
Plantarflex the foot
Mention the superficial lower posterior muscles
1) gastrocnemius (activated when rising on heels)
2) soleus (activated when knee is bent and heels are raised like foot series)
3) plantaris
4) achillis tendon
What do the deep muscles of the posterior leg do?
Plantarflex and invert the foot
Mention the 4 deep muscles of the lower posterior leg
1) popliteus - rotates the leg
2) tibialis posterior
3) flexor digitorum longus - flex toes
4) flexor hallucis longus - flex toes
What do the dorsum or extensor muscles of the foot do?
Extend toes
Mention the dorsal surface muscles
1) extensor digitorum brevis
2) extensor hallucis brevis
Mention the plantar layer 1 muscles of the foot
Flex & abduct toes
1) abductor hallucis
2) abductor digiti minimi
3) flexor digitorum brevis
Mention the 2nd layer of the foot
1) quadratus plantae
2) lumbricals
Mention the muscles of the third plantar layer of the foot
1) flexor hallucis brevis
2) adductor hallucis
3) flexor digiti minimi brevis
4) opponens digiti minimi
Mention the muscles of 4th layer of the foot (deepest?
- plantar interossei
- dorsal interossei
VMO
Vastus Medialis Oblique
Muscles that straighten and stabilize the knee
What muscles are used for hip flexion?
PSOAS
Rectus femoris
Iliacus
Pectineus
Sartorius
What muscles are use for shoulder flexion?
- Anterior Deltoid
- coracobrachialis
- pectoralis major
Muscles used in knee extension
Quadriceps group
(Rectus femoris, vastus lateralis, vastus intermedius, vastus medialis)
What muscles are used in radial deviation?
Carpi radialis
Muscles used in shoulder abduction
Supraspinatus
Deltoid
Trapezius
Serratus anterior
Muscles used in external rotation
- Gluteus max & medius
- piriformis
- gemellus inferior
- psoas major
Muscles used for thoracic rotation
- internal & external obliques
Muscles used in back extension
Erector spinae
What is the largest muscle in the body?
The sartorius