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Fall 2022- Anatomy II > WK 13+14 Lower Leg Muscles > Flashcards

WK 13+14 Lower Leg Muscles Flashcards

1
Q

OIIA: Rectus Femoris

A

O: AIIS and ilium superior to acetabulum
I: common quadriceps tendon, via patellar ligament to tibial tuberosity
I: Femoral Nerve
A: extends the knee joint, flexes hip joint

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2
Q

OIIA: Vastus Lateralis

A

O: greater trochanter and lateral lip of linea aspera of femur
I :common quadriceps tendon, via patellar ligament to tibial tuberosity
I: Femoral Nerve
A: extension of knee joint

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3
Q

OIIA: Vastus Medialis

A

O: intertrochanteric line and medial lip of linea aspera of femur
I :common quadriceps tendon, via patellar ligament to tibial tuberosity
I: Femoral Nerve
A: Extends the knee joint

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4
Q

OIIA: Vastus Intermedius

A

O: anterior surface and lateral surfaces of shaft of femur
I: common quadriceps tendon, via patellar ligament to tibial tuberosity
I: Femoral Nerve
A: extends the knee joint

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5
Q

OIIA: Articularis Genu

A

O: anterior surface of the distal femur
I: upper part of the synovial membrane of the knee joint
I: femoral nerve
A: pulls the articular capsule of the knee superior during knee extension

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6
Q

OIIA: Sartorius

A

O: ASIS and superior part of notch inferior to it
I : pes anserinus
I: Femoral Nerve
A: flexes, abducts, and laterally rotates hip joint; flexes knee joint

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7
Q

OIIA: Gracilis

A

O: body and inferior pubic ramus
I: pes anserinus
I: Obturator Nerve
A: adducts hip joint; flexes knee joint, medially rotating it when flexed

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8
Q

OIIA: Semitendinosus

A

O: ischial tuberosity
I: pes anserinus
I: tibial division of sciatic nerve
A: extends the hip joint; flexes the knee joint

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9
Q

OIIA: Semimembranosus

A

O: ischial tuberosity
I: posterior part of medial condyle of tibia; reflected attachment forms oblique popliteal ligament
I: tibial division of sciatic nerve
A: extends the hip joint; flexes the knee joint

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10
Q

OIIA: Biceps Femoris

A

O: long head: ischial tub
short head: linea aspera
I: lateral side of fibular head, tendon is split by fibular collateral lig
I: LH: sciatic; tibial SH: common fibular of sciatic
A: flexes knee joint, LH extends hip joint

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11
Q

OIIA: Extensor Hallucis Longus (EHL)

A

O: middle part of anterior surface of fibula and interosseus membrane
I :dorsal aspect of base of distal phalanx of great toe
I: deep fibular nerve
A: extends great toe, and dorsiflexes ankle

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12
Q

OIIA: Tibialis Anterior

A

O: lateral condyle and superior half of lateral surface of tibia and interosseus membrane
I: medial and inferior surfaces of medial cuneiform and base of first metatarsal
I: deep fibular nerve
A: dorsiflexes ankle joint and inverts subtalar joit

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13
Q

OIIA: Extensor Digitorum Longus ( EDL )

A

O: lateral condyle of tibia and superior three quarters of medial surface of fibula and interosseus membrane
I: middle and distal phalanges of lateral four digits
I: deep fibular nerve
A: extends lateral four digits and dorsiflexes ankle joint

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14
Q

OIIA: Fibularis Tertius

A

O: inferior third of anterior surface of fibula and interosseus membrane
I: dorsum of base of 5th metatarsal
I :deep fibular nerve
A: dorsiflexes ankle joint and aids in eversion of subtalar joint, It may play a special proprioceptive role in sensing sudden inversion and then contracting reflexively to protect the anterior tibiofibular ligament, the most commonly sprained ligament of the body

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15
Q

OIIA: Fibularis Longus

A

O: head and superior two thirds of lateral surface of fibula
I : base of 1st metatarsal and medial cuneiform
I :superficial fibular nerve
A: everts subtalar joint and weakly plantar flexes ankle joint

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16
Q

OIIA: Fibularis Brevis

A

O : inferior 2/3 of lateral surface of fibular
I: dorsal surface of tuberosity on lateral side of base of 5th metatarsal
I: superficial fibular nerve
A:everts subtalar joint and weakly plantar flexes ankle joint

17
Q

OIIA: Gastrocnemius

A

O: lateral head: lateral aspect of lateral condyle of femur
medial head: popliteal surface of femur; superior to medial condyle
I: posterior surface of calcaneus via achilles tendon
I :tibial nerve
A: Plantar flexes ankle joint, raises heel during walking

18
Q

OIIA: Soleus

A

O: posterior aspect of head and sup. quarter of posterior fibular surface; soleal line and middle third of medial border of tibial
I:posterior surface of calcaneus via achilles tendon
I: tibial nerve
A: plantar flexes ankle joint

19
Q

OIIA: Plantaris

A

O: inferior end of lateral supracondylar line of femur; oblique popliteal lig.
I : achilles tendon
I :tibial nerve
A: weakly assists gastroc in plantarflexion; The plantaris has been considered to be an organ of proprioception for the larger plantarflexors, as it has a high density of muscle spindles

20
Q

OIIA: Popliteus

A

O: lateral surface of lateral condyle of femur and lateral meniscus
I: posterior surface of tibia and superior to soleal line
I: tibial nerve
A: weakly flexes knee joint and unlocks it by rotating femur.

21
Q

OIIA: Tibialis Posterior

A

O: interosseus membrane; posterior surface of tibia inferior to soleal line; posterior surface of fibula
I: tuberosity of navicular, cuneiform, cuboid, and sustentaculum tali of calacneus; bases of 2nd, 3rd, and 4th metatarsals
I: tibial nerve
A: plantarflexion; inverts foot; maintains medial longitudinal arch

22
Q

OIIA: Flexor Digitorum Longus

A

O: medial part of posterior surface of tibia inferior to soleal line; by a broad tendon to fibula
I: bases of distal phalanges of lateral four digits
I: tibial nerve
A: flexes lateral four digits; plantar flexes ankle joint; supports longitudinal arches of the foot

23
Q

OIIA: Flexor Hallucis Longus

A

O: Inferior two thirds of posterior surface of fibula; inferior part of interosseus membrane
I: base of distal phalanx of great toe
I : tibial nerve
A: flexes great toe at all joints; weakly plantar flexes; supports arch

Fall 2022- Anatomy II (14 decks)

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