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Anatomy > Lower Appendicular Muscles > Flashcards

Lower Appendicular Muscles Flashcards

1
Q
A

Muscle:

Psoas Major

Origin:

Vertebra T12-L5

Insertion:

Lesser trochanter of femur

Action:

Flexes and laterally rotates thigh

Notes:

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2
Q
A

Muscle:

Iliacus

Origin:

Iliac fossa

Insertion:

Lesser trochanter of femur

Action:

Flexes and laterally rotates thigh

Notes:

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3
Q
A

Muscle:

Sartorius

Origin:

Anterior superior iliac spine

Insertion:

Tibial tuberosity of tibia

Action:

Flexes and laterally rotates thigh

Notes:

Also flexes leg

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4
Q
A

Muscle:

Pectineus

Origin:

Pectineal line of pubis

Insertion:

Pectineal line of femur

Action:

Adducts and flexes thigh

Notes:

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5
Q
A

Muscle:

Adductor Brevis

Origin:

Inferior ramus of pubis

Insertion:

Linea aspera of femur

Action:

Adducts and flexes thigh

Notes:

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6
Q
A

Muscle:

Adductor Longus

Origin:

Pubis

Insertion:

Linea aspera of femur

Action:

Adducts and flexes thigh

Notes:

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7
Q
A

Muscle:

Adductor Magnus

Origin:

Pubis and ischial tuberosity

Insertion:

Linea aspera and adductor tubercle of femur

Action:

Adducts thigh

Notes:

Also flexes, extends and rotates thigh

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8
Q
A

Muscle:

Gracilis

Origin:

Pubis

Insertion:

Tibia (superior/medial)

Action:

Adducts and flexes thigh

Notes:

Also flexes leg

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9
Q
A

Muscle:

Tensor Fasciae Latae

Origin:

Iliac crest & Anterior superior iliac spine

Insertion:

Lateral condyle of tibia via iliotibial band

Action:

Abducts and medially rotates thigh

Notes:

Accessory structure; iliotibial band/tract

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10
Q
A

Muscle:

Gluteus Maximus

Origin:

Iliac crest, sacrum, coccyx

Insertion:

Iliotibial band; Gluteal tuberosity and linea aspera of femur.

Action:

Extends and laterally rotates thigh

Notes:

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11
Q
A

Muscle:

Gluteus Medius

Origin:

Ilium

Insertion:

Greater trochanter of femur

Action:

Abducts and medially rotates thigh

Notes:

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12
Q
A

Muscle:

Gluteus Minimus

Origin:

Ilium

Insertion:

Greater trochanter of femur

Action:

Abducts and medially rotates thigh

Notes:

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13
Q
A

Muscle:

Piriformis

Origin:

Sacrum

Insertion:

Greater trochanter of femur

Action:

Laterally rotates thigh

Notes:

Also abducts thigh

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14
Q
A

Muscle:

Gemellus Superior; Obturator Internus; Gemellus Inferior

Origin:

Ischial spine & tuberosity (etc.)

Insertion:

Greater trochanter of femur

Action:

Laterally rotates thigh

Notes:

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15
Q
A

Muscle:

Quadratus Femoris

Origin:

Ischial tuberosity

Insertion:

Intertrochanteric crest of femur

Action:

Adducts and laterally rotates thigh

Notes:

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16
Q
A

Muscle:

Rectus Femoris

Origin:

Anterior inferior iliac spine

Insertion:

Tibial tuberosity of tibia

Action:

Extends leg and flexes thigh

Notes:

Part of Quadriceps femoris (prime mover of leg extension)

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17
Q
A

Muscle:

Vastus Lateralis

Origin:

Greater trochanter and linea aspera of femur

Insertion:

Tibial tuberosity of tibia

Action:

Extends leg

Notes:

Part of Quadriceps femoris (prime mover of leg extension)

18
Q
A

Muscle:

Vastus Medialis

Origin:

Intertrochanteric line and linea aspera of femur

Insertion:

Tibial tuberosity of Tibia

Action:

Extends leg

Notes:

Part of Quadriceps femoris (prime mover of leg extension)

19
Q
A

Muscle:

Vastus Intermedius

Origin:

Femur (anterolateral shaft)

Insertion:

Tibial tuberosity of Tibia

Action:

Extends leg

Notes:

Part of Quadriceps femoris (prime mover of leg extension)

20
Q
A

Muscle:

Biceps Femoris; Long and short head.

Origin:

Long head: Ischial tuberosity

Short head: Linea aspera

Insertion:

Head of Fibula

Action:

Flexes leg

Notes:

Lateral member of “Hamstrings” group; Long head extends and laterally rotates thigh.

21
Q
A

Muscle:

Semitendinosus

Origin:

Ischial tuberosity

Insertion:

Proximal medial Tibia

Action:

Flexes leg and extends thigh

Notes:

One of two medial members of “Hamstrings” group

22
Q
A

Muscle:

Semimembranosus

Origin:

Ischial tuberosity

Insertion:

Medial condyle of tibia

Action:

Flexes leg and extends thigh

Notes:

One of two medial members of “Hamstrings” group

23
Q
A

Muscle:

Tibialis Anterior

Origin:

Lateral condyle and shaft of Tibia

Insertion:

Metatarsal I & Medial Cuneiform

Action:

Dorsiflexes and inverts foot

Notes:

24
Q
A

Muscle:

Extensor Digitorum Longus

Origin:

Lateral condyle of Tibia, Fibula

Insertion:

Distal phalanges II-V

Action:

Extends toes 2-5 & dorsiflexes foot

Notes:

25
Q
A

Muscle:

Extensor Hallucis Longus

Origin:

Anterior fibula

Insertion:

Distal phalanx I

Action:

Extends great toe and dorsiflexes foot

Notes:

Hallux = Great toe

26
Q
A

Muscle:

Fibularis Longus

Origin:

Head and superior shaft of fibula, lateral condyle of tibia

Insertion:

Metatarsal I and Medial Cuneiform

Action:

Everts and plantarflexes foot

Notes:

27
Q
A

Muscle:

Fibularis Brevis

Origin:

Fibular shaft

Insertion:

Metatarsal V

Action:

Everts foot

Notes:

Weak plantar flexor

28
Q
A

Muscle:

Gastrocnemius

Origin:

Medial and lateral condyles of femur

Insertion:

Calcaneus (via Calcaneal tendon)

Action:

Plantarflexes foot, flexes leg

Notes:

Part of “triceps surae”

29
Q
A

Muscle:

Plantaris

Origin:

Lateral supracondylar ridge of femur

Insertion:

Posterior calcaneus

Action:

Weak leg and plantar flexor

Notes:

30
Q
A

Muscle:

Soleus

Origin:

Head and shaft of fibula, tibia

Insertion:

Calcaneus (via calcaneal tendon)

Action:

Plantarflexes foot

Notes:

Part of “triceps surae”

31
Q
A

Muscle:

Popliteus

Origin:

Lateral condyle of femur

Insertion:

Proximal tibia

Action:

Flexes leg and medially rotates tibia

Notes:

“Key to the knee”

32
Q
A

Muscle:

Tibialis Posterior

Origin:

Fibula and tibia

Insertion:

Navicular, cuboid, all cuneiforms, and metatarsals II-IV

Action:

Plantarflexes and inverts foot.

Notes:

33
Q
A

Muscle:

Flexor Digitorum Longus

Origin:

Posteromedial tibia

Insertion:

Distal phalanges II-V

Action:

Flexes toes 2-5 (MP, PIP and DIP joints), plantarflexes foot

Notes:

34
Q
A

Muscle:

Flexor Hallucis Longus

Origin:

Posterior fibula

Insertion:

Distal phalanx I

Action:

Flexes great toe, plantarflexes foot

Notes:

Hallux = Great toe

35
Q
A

Muscle:

Flexor Digitorum Brevis

Action:

Flexes toes 2-5 (MP and PIP joints)

Notes:

Intrinsic foot muscle

36
Q
A

Muscle:

Abductor Hallucis

Action:

Abducts great toe

Notes:

Intrinsic foot muscle

37
Q
A

Muscle:

Abductor Digiti Minimi

Action:

Abducts toe 5

Notes:

Intrinsic foot muscle

38
Q
A

Iliotibial band/tract

39
Q
A

Flexor retinaculum

40
Q
A

Extensor retinaculum

41
Q
A

Plantar aponeurosis

Anatomy (13 decks)

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