Lecture 19. Muscles in the leg and thigh and feet Flashcards
How are muscles in the lower limb divided?
gluteal, thigh, leg and foot
Name 3 superficial muscles in the gluteal region
- gluteal maximus
- gluteal minimis
- gluteal medius
What is the O,I,F,I of the gluteus maximus
O: posterior surface of the sacrum AND lateral surface of the ilium
I: lateral tibial condyle, greater trochanter
F: stability of knee, extension of hip joint
I: sacral plexus, inferior gluteal nerve
What is the O,I,F,I of the gluteus medius
O: external surface of the ilium
I: lateral surface of the greater trochanter
F: abduction of hip
I: superior gluteal nerve from sacral plexus
What is the O,I,F,I of the gluteus minimus
O: lateral surface of the ilium
I: anterior surface of the greater trochanter
F: flexion of the hip joint
I:superior gluteal nerve from sacral plexus
What is a muscle of the deep group of the gluteal region
piriformis
What is the O,I,F,I
O: anterior surface of the sacrum I: greater trochanter of the femur (the origin passes through the greater sciatic notch) F: lateral rotation of the hip joint I: sacral plexus
What are the compartments of the thigh
anterior, medial and posterior compartments
What are the functions of the anterior compartment of the thigh?
extensor muscles
What innervates the anterior compartment of the thigh
femoral nerve
What is the function of the medial compartment of the thigh
adductor of hip joint
What innervates the medial compartment of the thigh
obturator nerve
What is the function of the posterior compartment of the thigh (hamstrings)
flexion of the knee
What innervates the posterior compartment of the knee
sciatic nerve
Name 3 muscles in the anterior compartment of the thigh
iliopsoas
sartorius
quadriceps ( have 4 heads)
What are the anterior muscles of the thigh that does not participate in flexion?
sartorius, iliopsoas
What is the O,I,F,I of sartorius muslce
O: ASIS
I: medial surface of tibia
F: rotates hip joint laterally, flexes hip, flexes knee
I: femoral nerve
What is the O,I,F,I of the quadriceps
O: hip bone , femur
I: patella (knee cap): but the filament continues to attach to the tibial tuberosity ( final destination)
F: extension of the knee
I: femoral nerve
What is a muscle in the medial compartment of the thigh
adductor longus and adductor magnus
What is the O,I,F,I of the adductor longus
O: pubis
I: linea aspera (rough line)
F: adduction of hip joint
I: obturator
What is the O,I,F,I of the adductor magnus
O: ischiopubic ramus + ischial tuberosity / pubic bone
I: adductor tubercle
F: adduction and extension of hip joint
I: obturator and sciatic nerve
What is the largest muscle in the adductor compartment
adductor magnus
What is the O,I,F,I of the biceps femoris
O:
(long head: ischial tuberosity; short head: linea aspera )
I:head of fibula
F: PRIME MOVER:flexor of knee; extension of hip
I: sciatic nerve
What are the main muscles of the anterior compartment of the leg
tibialis anterior
What is the O,I,F,I of the tibialis anterior
O: tibia
I: medial cuneiform & base of 1st metatarsal
F: PRIME MOVER: inversion of foot; dorsi flexion
I: deep fibular nerve
What are the compartments of the leg, name their compartment functions and the innervration
3 compartments.
anterior: dorsi flexion of ankles, extend toes ; fibular nerve
posterior: plantar flexion of toes and ankles; tibial nerve
lateral: evertor of the ankle joint; superficial fibular nerve
What is the O,I,F,I of the gastrocnemius
O: femoral condyles ( both heads)
I: calcaneus via the calcaneal tendon
F: plantar flexion of the ankle
I: tibial
What is the O,I,F,I of the tibia posterior
O: posterior aspect of tibia and fibula
I: all tarsal bones except talus
F: plantar flexion of the ankle joint and inversion of foot
I: tibial nerve
What is the O,I,F,I of the fibularis longus
O: lateral side of fibula
I: medial cuneiform of the 1st metatarsal
F: PRIME MOVER of foot eversion
I: superficial fibular
How many layers of muscles are there on the foot
4 layers
1st layer: abduction of 1st and 5th toe, flex all 2-5.
2nd layer: flex toes 2-5
3rd layer: flex 1st and 5th toes and adduct the 1st toes
4th layer: adductor and abductor of all toes
What are the 3 transitional areas of the lower limb
- femoral triangle: femoral nerve, vein and artery passes through this
- popliteal fossa: tibial and fibular nerve , artery and vein
3.tarsal tunnel: