Muscular System Pt. 9 - Muscles of the Pelvis & Thigh Flashcards

1
Q

Which muscle combines with the Psoas Major?

A

Iliacus - Iliopsoas

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2
Q

Origin of Psoas Major

A
  • Transverse processes of Lumbar Vertebrae
  • Bodies of lumbar vertebrae
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3
Q

Insertion of Psoas Major

A

Lesser trochanter of femur

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4
Q

Actions of Psoas Major

A
  • Hip (thigh) Flexion
  • Lateral flexion of thigh

Hip flexion - lifting lower leg up in front of you

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5
Q

Origin of Iliacus

A

Iliac crest & Sacrum

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6
Q

Insertion of Iliacus

A

Lesser trochanter of femus

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7
Q

Actions of Iliacus

A
  • Hip (Thigh) Flexion
  • Lateral rotation of thigh

Same as psoas; hence why linked together

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8
Q

Origin of Tensor Fascia Lata (TFL)

A

Iliac Crest

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9
Q

Insertion of Tensor Fascia Lata

A

Into the Tibia via the iliotibial tract

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10
Q

Actions of Tensor Fascia Lata (TFL)

A

Hip abduction
Hip flexion

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11
Q

Origin of Gluteus Maximus

A

Sacrum, Coccyx and Iliac Crest

Most superficial of the lower limb muscles - more lateral and posterior

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12
Q

Insertion of Gluteus Maximus

A

Iliotibial Tract

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13
Q

Actions of Gluteus Maximus

A
  • Hip extension
  • Lateral rotation of hip

Extension of hip - lifting lower limb backwards

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14
Q

Where are Gluteal Medius & Minimus located with respect to the lower limb muscles?

A

More medial and anterior

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15
Q

Which gluteal muscles have a common origin, insertion and actions

A

Gluteal Medius and Minimus

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16
Q

Origin of Gluteal Medius and Minimus

A

Ilium

Medius is superficial to minimus

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17
Q

Insertion of Gluteal Medius and Minimus

A

Greater trochanter of femur

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18
Q

Actions of Gluteal Medius and Minimus

A
  • Abduction of thigh
  • Medial rotation of thigh

lower limb out to the side - abduction of thigh

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19
Q

What is the inguinal ligament?

A

Connective tissue attaching from ASIS to pubic bone

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20
Q

Origin of Sartorius

A

Anterior superior iliac spine

Muscle is connected to the hip joint and crosses the knee joint

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21
Q

Insertion of Sartorius

A

Medial surface of tibia

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22
Q

Actions of Sartorius

A
  • Flexion of Thigh
  • Lateral rotation of thigh
  • Abduction of thigh
  • Knee flexion

Knee flexion is possible because the muscle crosses the knee joint

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23
Q

What does Quadriceps Femoris mean?

A

4 muscles of the quad make up the femur

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24
Q

What are the muscles that make up the Quadriceps Femoris Group

A

Rectus Femoris (RF), Vastus Medialis (VM), Vastus Lateralis (VL) & Vastus intermedius (VI)

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25
Q

Origin of Rectus Femoris

A

Anterior Inferior Iliac Spine (AIIS)

26
Q

Insertion of Rectus Femoris

A
  • Patella
  • Tibial tuberosity through the patellar ligament
27
Q

Actions of Rectus Femoris

A

Knee extension and Hip flexion

Hip flexion is specific to Rectus Femoris because the muscle crosses the hip

28
Q

Origin of Vastus Medialis (VM)

A

Linea aspera of femur

29
Q

Insertion of Vastus Medialis (VM)

A
  • Patella
  • Tibial Tuberosity via patellar ligament

Patellar ligament is the bone to bone connection of the knee and femur

30
Q

Actions of Vastus Medialis

A

Knee Extension

31
Q

Origin of Vastus Lateralis (VL)

A

Lateral aspect of femur

32
Q

Insertion of Vastus Lateralis (VL)

A

Patella and Tibial tuberosity via patellar ligament

33
Q

Actions of Vastus Lateralis

A

Knee Extension

34
Q

Origin of Vastus Intermedius (VI)

A

Anterior surface of femur

35
Q

Insertion of Vastus Intermedius

A

Patella and Tibial tuberosity via patellar ligament

36
Q

Actions of Vastus Intermedius

A

Knee extension

37
Q

What is the linea aspera

A

Medial-posterior region of the femur

A lot of quadricep and low limb muscles insert onto it

38
Q

What are the adductor muscles of the hip and thigh? What is their purpose

A

Purpose: Allow adduction to occur
* Gracilis
* Pectineus
* Adductor brevis

39
Q

Where can you find the adductor muscles?

A

Medial to the femur & around the pelvic bone to femur region

40
Q

Origin of Gracilis, Pectineus & Adductor Brevis

A

Pubis

41
Q

Origin of Adductor Longus

A

Pubic Crest and Pubic Symphysis

42
Q

Origin of Adductor Magnus

A

Inferior ramus of pubis, ischial tuberosity, ischium

43
Q

Insertions of Gracilis

A

Medial Surface of tibia

44
Q

Insertion of Pectineus

A

Pectineal Line (spiral line) of femur

45
Q

Insertion of Adductor Longus

A

Linea aspera of femur

46
Q

Insertion of Adductor Brevis

A

Linea Aspera of femur

47
Q

Insertion of Adductor Magnus

A

Linea Aspera of femur

48
Q

Actions of all 5 adductor muscles

A

Hip adduction & Flexion of thigh

49
Q

Which Adductor muscles have a unique action and what are they?

A

Adductor Magnus and Gracilis
* AM - Hip extension
* Gracilis - knee flexion

50
Q

How many muscles make up the hamstrings and where are they facing

A

3 muscles; posterior region of thigh

51
Q

What are the hamstring muscles named?

A

Biceps Femoris, Semitendinosus, Semimembranosus

BF is more lateral; semitendinosus is more skinnier and longer than semimembranosus

52
Q

Origin of the three hamstring muscles

A

Ischial tuberosity & Linea aspera of femur (Short Head BF)

Only the long head of the BF (not short head) because it crosses the hip joint

53
Q

Origin of Bicep Femoris (Short head)

A

Linea aspera of femur

54
Q

Insertion of Semimembranosus

A

Medial side of tibia

55
Q

Insertion of Semitendinosus

A

Medial side of tibia

56
Q

Insertion of Bicep Femoris

A
  • Head of fibula; Lateral condyle of tibia
57
Q

Actions of Semimembranosus

A

Hip extension & Knee Flexion

58
Q

Actions of Semitendinosus

A

Hip extension & Knee flexion

59
Q

Actions of Long head of Bicep Femoris

A

Hip extension

60
Q

Actions of Short head of Bicep Femoris

A

Knee flexion