Extremities Part 2 (Lower Muscles) Flashcards by christene jones

List the four compartments of the thigh.

Anterior
Lateral
Posterior
Medial

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What structure forms the compartments of the thigh?

Fascia lata - the deep fascia

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List all of the muscles of the lateral compartment of the thigh that cross the knee joint.

Tensor fasciae latae

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Identify: Tensor fasciae latae

LATERAL COMPARTMENT
Origin: anterolateral ilium
Insertion: lateral tibial condyle -through iliotibial tract
Action: Abducts thigh

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Identify: Sartorius

ANTERIOR COMPARTMENT
Origin: Anterior superior iliac spine
Insertion: medial proximal tibia
Action: flex hip, knee

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What is the collective name of the group of four extensors of the knee in the anterior compartment of the thigh?

Quadriceps femoris

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What is the common insertion of the group of four extensors of the knee in the anterior compartment of the thigh?

Tibial tuberosity via the patellar tendon

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What is the common action of the group of four extensors of the knee in the anterior compartment of the thigh?

Extension of the knee

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Of the four extensors in the anterior compartment of the thigh, which crosses the hip joint and is a flexor of the hip?

Rectus femoris

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Identify: Rectus femoris

ANTERIOR COMPARTMENT
Origin: anterior inferior iliac spine
Insertion: tibial tuberosity
Action: flexes hip

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Identify: Vastus lateralis

ANTERIOR COMPARTMENT
Origin: greater trochanter and linea aspera of femur
Insertion: Tibial tuberosity
Action: extends knee

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Identify: Vastus Medialis

ANTERIOR COMPARTMENT
Origin: medial surface and linea aspera of femur
Insertion: tibial tuberosity
Action: extends knee

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Identify: Vastus intermedius

ANTERIOR COMPARTMENT
Origin: anterior femur
Insertion: tibial tuberosity
Action: extends knee

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List all of the muscles of the anterior compartment of the thigh that cross the knee joint.

Sartorius
Rectus femoris
Vastus lateralis
Vastus intermedius
Vastus medialis

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Identify: Gracilis

MEDIAL COMPARTMENT
Origin: body of pubis
Insertion: proximal medial tibia
Action: adducts thigh

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Pes Anserinus:

Semitendinosus tendon
gracilis tendon
sartorius tendon

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Identify: Pectineus

MEDIAL COMPARTMENT
Origin: pectineal line of pubis
Insertion: pectineal line of femur
Action: adducts thigh, laterally rotates thigh

Identify: Adductor longus

MEDIAL COMPARTMENT
Origin: superior pubic ramus
Insertion: Middle 1/3 linea aspera
Action: Adducts thigh

Identify: Adductor brevis

MEDIAL COMPARTMENT
Origin: inferior pubic ramus
Insertion: proximal linea aspera
Action: adducts thigh

Identify: Adductor magnus

MEDIAL COMPARTMENT
Origin: inferior surface of ischium
Insertion: linea aspera
Action: adducts thigh

List all of the muscles of the medial compartment of the thigh that cross the knee joint.

Gracilis

Identify: Biceps femoris

POSTERIOR COMPARTMENT
Origin: long head - ischial tuberosity
short head - linea aspera
Insertion: head of fibula
Action: flexes leg

Identify: Semimembranosus

POSTERIOR COMPARTMENT
Origin: Ischial tuberosity
Insertion: Posterior medial condyle tibia
Action: flexes knee

Identify: Semitendinosus

POSTERIOR COMPARTMENT
Origin: Ischial tuberosity
Insertion: Medial proximal tibia
Action: flexes knee

List all of the muscles of the posterior compartment of the thigh that cross the knee joint.

Biceps femoris - long head and short head Semitendinosus Semimembranosus

Identify: Popliteus

Origin: lateral condyle of femur Insertion: Posterior medial tibia Action: unlocks knee

What is the anatomical term for the muscles of the leg?

Crural muscles

How many compartments lie within the leg?

Three

List the compartments that lie within the leg.

Anterior Lateral Posterior

Identify: Extensor digitorum longus

ANTERIOR COMPARTMENT Origin: Lateral condyle of tibia Insertion: digits 2-5 Action: dorsiflexion and extends digits 2-5

Identify: Extensor Hallucis Longus

ANTERIOR COMPARTMENT origin: middle anterior surface fibula insertion: 1st digit Action: extends digit 1 assists dorsiflexion of foot

Identify: Tibialis anterior

ANTERIOR COMPARTMENT Origin: lateral condyle tibia insertion: medial cuneiform Action: dorsiflexion of ankle, inversion of foot

Identify: Fibularis longus

LATERAL COMPARTMENT Origin: superior fibula Insertion: inferior medial cuneiform Action: plantar flexion and eversion of foot

Identify: Fibularis brevis

LATERAL COMPARTMENT Origin: inferior fibula Insertion: tuberosity of the 5th metatarsal Action: everts foot

Identify: Gastrocnemius

POSTERIOR COMPARTMENT Origin: medial head - medial condyle femur lateral head- lateral condyle femur Insertion: achilles tendon Action: plantar flexion foot, knee flexion

Identify: Soleus

POSTERIOR COMPARTMENT Origin: soleal line Insertion: achilles tendon Action: Plantar flexion foot

Identify: Plantaris (The Freshman Nerve)

POSTERIOR COMPARTMENT Origin: lateral supracondylar ridge femur Insertion: Achilles tendon Action: plantar flexion foot and flexing knee joint

Identify: Tibialis posterior

origin: posterior tibia Insertion: inferior navicular Action: plantar flexion and inverts foot

Identify: Flexor Digitorum longus

Origin: posterior tibia Insertion: digits 2-5 Action: flex digits 2-5

Identify: Flexor Hallucis longus

Origin: inferior 1/2 fibula Insertion: 1st digit Action: flexes 1st digit

Extremities Part 2 (Lower Muscles) Flashcards

Unit 4: Extremities