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ESP SM1 > Anatomy 1 - Pelvis muscles > Flashcards

Anatomy 1 - Pelvis muscles Flashcards

1
Q

Origin of psoas major?

A
  • Vertebral bodies and intervertebral discs between T12-L4
  • Transverse processes of L1-L5 vertebrae
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2
Q

Insertion of psoas major?

A

Lesser trochanter of femur

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3
Q

Function of psoas major?

A
  • Flexion of the thigh/trunk at the hip joint
  • Lateral rotation of the thigh
  • Lateral flexion of the trunk
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4
Q

Which muscles are blended together to form iliopsoas?

A

Psoas major and iliacus

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5
Q

Origin of iliacus?

A

Iliac fossa (upper two-thirds)

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6
Q

Insertion of iliacus?

A

Lesser trochanter of femur (blends in with psoas major tendon)

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7
Q

Function of iliacus?

A

Flexion of the thigh/trunk

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8
Q

Origin of tensor fasciae latae and iliotibial tract?

A
  • Anterior superior iliac spine (ASIS)
  • Anterior outer lip of the iliac crest
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9
Q

Insertion of tensor fasciae latae and iliotibial tract?

A

TFL –> IT –> lateral condyle of tibia (Gerdy’s tubercule)

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10
Q

Function of TFL-iliotibial tract?

A
  • IR of the hip
  • Weak AB of the hip
  • Stabilises hip/knee joints
  • ER of the knee,
  • Weak F/E of the knee
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11
Q

Origin of gluteus maximus?

A
  • Posterior gluteal line of ilium
  • Sacrotuberous ligament
  • Lateral posterior surface of sacrum and coccyx
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12
Q

Insertion of gluteus maximus?

A
  • Upper fibers: iliotibial tract
  • Lower: gluteal tuberosity of femur
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13
Q

Function of gluteus maximus?

A
  • E
  • ER
  • AB of the hip
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14
Q

Origin of gluteus medius?

A

Gluteal surface of ilium (btw posterior and anterior gluteal lines)

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15
Q

Insertion of gluteus medius?

A

Lateral surface of the greater trochanter of the femur

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16
Q

Function of gluteus medius?

A
  • AB of the hip
  • E of the hip
  • Stabilises hip joint
  • (anterior fibers: assist in IR // posterior: assist in ER)
17
Q

Origin of gluteus minimus?

A

Gluteal surface of ilium (btw anterior and inferior gluteal lines)

18
Q

Insertion of gluteus minimus?

A

Anterior surface of the greater trochanter of the femur

19
Q

Function of gluteus minimus?

A
  • AB of the hip
  • Stabilises hip joint
  • (anterior fibers: assist in IR // posterior: assist in ER)
20
Q

What is the gluteal aponeurosis?

A
  • Dense fibrous membrane
  • Laying btw the iliac crest - superior border of gluteus maximus (over gluteus medius)
  • Belongs to fasciae latae
21
Q

Origin of piriformis?

A
  • Anterior surface of sacrum S2-S4
  • Gluteal surface of ilium (close to PIIS posterior inferior iliac spine)
22
Q

Insertion of piriformis?

A

Apex of greater trochanter of femur

23
Q

Function of piriformis?

A
  • When extended hip: ER of the femur
  • When flexed hip: AB of the femur
  • Stabilises hip joint
24
Q

Origin of obturator internus?

A

Posterior surface of the obturator foramen (across pubis and ischium)

25
Q

Insertion of obturator internus?

A

Medial surface of the greater trochanter of femur (right above trochanteric fossa)

26
Q

Function of obturator internus?

A
  • When extended hip: ER
  • When flexed hip: AB
  • Stabilises hip joint

(like piriformis and kinda same as obturator exter.)

27
Q

Origin of obturator externus?

A
  • Anterior surface of the obturator foramen
  • Bony boundaries of obturator foramen
28
Q

Insertion of obturator externus?

A

Trochanteric fossa of the femur

29
Q

Function of obturator externus?

A
  • ER of the hip
  • When hip flexed: AB of the hip
  • Stabilises hip joint
30
Q

Origin of superior gemellus?

A

Ischial spine (blends with tendons of the obturator internus)

31
Q

Insertion of superior gemellus?

A

Medial surface of the greater trochanter of femur (via tendons of the obturator internus)

32
Q

Function of superior gemellus?

A
  • ER of the hip
  • When hip flexed: AB of the hip
  • Stabilises head of femur in acetabulum
33
Q

Origin of inferior gemellus?

A

Ischial tuberosity

34
Q

Insertion of inferior gemellus?

A

Medial surface of greater trochanter of femur (via tendon of obturator internus)

35
Q

Function of inferior gemellus?

A
  • ER of the hip
  • When hip flexed: AB of the hip
  • Stabilises femoral head in acetabulum
36
Q

Origin of quadratus femoris?

A

Lateral border of ischial tuberosity

37
Q

Insertion of quadratus femoris?

A

Intertrochanteric crest of femur

38
Q

Function of quadratus femoris?

A
  • ER of the hip
  • AD “”
  • Stabilises head of femur in acetabulum

ESP SM1 (7 decks)

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