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Anatomy > MSK, Gluteal Region > Flashcards

MSK, Gluteal Region Flashcards

1
Q

greater sciatic notch

A
  • lies between the posterior inferior iliac spine (above), and the ischial spine (below)
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2
Q

lesser sciatic notch

A
  • small notch below the ischial spine
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3
Q

ischial spine

A
  • triangular eminence on the posterior border of the ischium
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4
Q

ischial tuberosity

A
  • large swelling on the superior ramus of the ischium
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5
Q

sacrotuberous ligament

A
  • connects the ischial tuberosity to the ilium, sacrum, and coccyx
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6
Q

sacrospinous ligament

A
  • passes from the ischial spine to the sacrum and coccyx
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7
Q

greater sciatic foramen

A
  • formed by the sacrotuberous and sacrospinous ligaments
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8
Q

lesser sciatic foramen

A
  • formed by the sacrotuberous ligament which runs between the sacrum and the ischial tuberosity and the sacrospinous ligament which runs between the sacrum and the ischial spine
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9
Q

greater trochanter

A
  • part of the femur: large, irregular, quadrilateral eminence
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10
Q

Intertrochanteric crest

A
  • a bony ridge located on the posterior side of the head of the femur, stretching obliquely downward and medially from the summit of the greater trochanter to the lesser trochanter
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11
Q

Trochanteric fossa

A
  • medial surface of the greater trochanter has at its base a deep depression bounded posteriorly by the intertrochanteric crest
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12
Q

Gluteal tuberosity

A
  • The lateral ridge of the linea aspera which is very rough, and runs almost vertically upward to the base of the greater trochanter; attachment point for the gluteus maximus
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13
Q

gluteus maximus

A
  • Proximal Attachment: Ilium and sacrum and sacrotuberous ligament
  • Distal Attachment: Iliotibial tract and proximal femur
  • Innervation: Inferior gluteal nerve
  • Action: Extends thigh and assists in lateral rotation
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14
Q

gluteus medius

A
  • Proximal Attachment: Lateral surface of ilium
  • Distal Attachment: Greater trochanter of the femur
  • Innervation: Superior gluteal nerve
  • Action: Abduct and medially rotate thigh
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15
Q

gluteus minimus

A

-Proximal Attachment: Lateral surface of ilium
-Distal Attachment: Greater trochanter of the femur
-Innervation: Superior gluteal nerve
Action: Abduct and medially rotate thigh

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16
Q

Piriformis

A
  • Proximal Attachment: Anterior surface of the sacrum
  • Distal Attachment: Greater trochanter
  • Innervation: Nerve to the piriformis
  • Action: Laterally rotates thigh
17
Q

obturator internus

A
  • Proximal Attachment: Obturator foramen and obturator membrane
  • Distal Attachment: Greater trochanter
  • Innervation: Nerve to the obturator internus
  • Action: Laterally rotates thigh
18
Q

superior gamellus

A
  • Proximal Attachment: ischial spine
  • Distal Attachment: Greater trochanter
  • Innervation: nerve to the obturator internus
  • Action: Laterally rotates thigh
19
Q

inferior gamellus

A
  • Proximal Attachment: ischial tuberosity
  • Distal Attachment: Greater trochanter
  • Innervation: nerve to the quadratus femoris
  • Action: Laterally rotate thigh
20
Q

quadratus femoris

A
  • Proximal Attachment: Ischial tuberosity
  • Distal Attachment: intertrochanteric crest
  • Innervation: nerve to the quadratus femoris
  • Action: Laterally rotates thigh
21
Q

superior gluteal artery and vein

A
  • enters the gluteal region through the greater sciatic foramen superior to the piriformis muscle; under cover of the gluteus maximus it divides into branches that supply muscles of the buttock
22
Q

superior gluteal nerve

A
  • (L4,5, S1)) passes through the greater sciatic foramen immediately superior to the piriformis muscle. It passes between the gluteus medius and minimus and supplies both of those muscles as well as the tensor fasciae latae
23
Q

inferior gluteal artery and vein

A
  • enters the gluteal region through the greater sciatic foramen inferior to the piriformis muscle and descends on the medial side of the sciatic nerve; supplies muscles of the buttock and back of thigh
24
Q

inferior gluteal nerve

A
  • (L5, S1,2) traverses the greater sciatic foramen just inferior to the piriformis muscle and supplies the gluteus maximus
25
Q

sciatic nerve

A
  • L4,5,S1,2,3 segments of the sacral plexus
    Emerges from greater sciatic foramen inferior to the piriformis muscle
  • Will divide into:
    Tibial nerve (nerve of the posterior compartment of the leg and plantar foot)
    AND
    Common fibular nerve (nerve of the anterior and lateral compartments of the leg)
26
Q

posterior cutaneous nerve of the thigh

A
  • usually be seen passing vertically down the posterior midline of the thigh; it was cut from its distal target (the skin) when the posterior thigh was skinned and will likely appear as a free hanging nerve

Anatomy (6 decks)

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