Unit 2: Lecture 17 (Bony Pelvis & Hip) Flashcards

1
Q

Pelvic Girdle composition

A
  • 2 coxal bones (form pelvic walls)

- sacrum & coccyx (form posterior wall)

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2
Q

What bones fuse together to make hip bone?

A
  • ilium
  • ischium
  • pubis
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3
Q

Where does the fusion of the hipbone take place?

A

acetabulum (hip joint socket)

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4
Q

True pelvis

A

Anything BELOW the line arcuate line of the ilium/pectineal line of the pubis

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5
Q

False pelvis

A

Anything ABOVE the line arcuate line of the ilium/pectineal line of the pubis

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6
Q

What is the longest and strongest bone in the body?

A

Femur, jackass.

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7
Q

Small depression in head of femur?

A

Fovea capitis

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8
Q

What is the angle between the head/neck/shaft of femur called?

A

Angle of inclination (125°)

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9
Q

Joints of pelvic girdle (4)

A
  • lumbrosacral joint
  • sacrococcygeal joint
  • interpubic joint
  • sacroiliac (SI) joint
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10
Q

Lumbrosacral joint

A

attaches pelvic girdle to the axial skeleton

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11
Q

What two ligaments support the sacrococcygeal joint?

A
  • lateral sacrococcygeal ligament

- posterior sacrococcygeal ligament

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12
Q

What ligaments support the sacroiliac (SI) joint? (4 + 2 accessory ligaments)

A
  • posterior ligament
  • interosseous sacroiliac ligament
  • anterior sacroiliac ligament
  • iliolumbar ligament
    + sacrotuberous ligament
    + sacrospinous ligament
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13
Q

Which two ligaments convert the greater sciatic and lesser sciatic notches into the greater and lesser sciatic foramina?

A
  • Sacrotuberous ligament

- Sacrospinous ligament

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14
Q

Which muscle exits out of the pelvis through the greater sciatic foramen?

A

Piriformis muscle

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15
Q

Which structures exit the greater sciatic foramen ABOVE the piriformis?

A

Superior gluteal nerves and vessels

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16
Q

Which structures exit the greater sciatic foramen BELOW the piriformis? (7)

A
  • inferior gluteal nerves and vessels
  • internal pudendal vessels
  • pudendal nerve
  • sciatic nerve
  • posterior femoral cutaneous nerve
  • nerve to obturator internus
  • nerve to quadratus femoris
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17
Q

Boundaries of lesser sciatic foramen

A

Anterior: body of ischial tuberosity
Superior: ischial spine and sacrospinous ligament
Posterior: sacrotuberous ligament

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18
Q

Which tendon EXITS the pelvis via the lesser sciatic foramen?

A

Obturator internus tendon

19
Q

Which structures ENTER the pelvis through the lesser sciatic foramen?

A
  • Pudendal nerve
  • Internal pudendal vessels
  • Nerve to obturator internus
20
Q

The hip joint is designed for…

21
Q

The head of the femur is covered by ___________

A

thick hyaline cartilage

22
Q

A fibrocartilaginous rim called the ____________ is attached to the margins of the acetabulum

A

acetabular labrum

23
Q

The acetabular labrum is continuous with the ___________

A

transverse ligament of the acetabulum

24
Q

In the acetabulum, the ____________ provides a passage for the vessels and the nerves to the hip joint

A

acetabular notch

25
Ligaments associated with hip joint: (6)
- articular capsule (thick and strong) - iliofemoral ligament/Y-shaped ligament of Bigelow (prevents overextension of joint) - pubofemoral ligament (prevents ABduction) - ischiofemoral ligament (limits medial rotation) - ligamentum capitis femoris (provides blood vessels to head of femur) - transverse ligament of acetabulum (closes acetabulum)
26
Gluteus maximus
A: extends and laterally rotates thigh; helps extend knee N: Inferior gluteal nerve
27
Gluteus medius
A: Abducts thigh at hip; tilts pelvis when walking to permit opposite leg to clear ground N: Superior gluteal nerve
28
Gluteus minimus
A: Abducts thigh at hip; tilts pelvis when walking to permit opposite leg to clear ground N: Superior gluteal nerve
29
Tensor Fasciae Latae
A: Helps flex, abduct (medially rotates thigh); assists gluteus maximus in extending the knee joint. N: Superior gluteal nerve
30
Piriformis
A: Lateral rotator of thigh at hip joint N: Nerve to piriformis
31
Obturator internus
A: Lateral rotator of thigh at hip joint N: Nerve to obturator internus
32
Gemellus Superior
A: Lateral rotator of thigh at hip joint N: Nerve to obturator internus
33
Gemellus Inferior
A: Lateral rotator of thigh at hip joint N: Nerve to quadratus femoris
34
Quadratus femoris
A: Lateral rotator of thigh at hip joint N: Nerve to quadratus femoris
35
Obturator externus
A: Laterally rotates thigh at hip joint N: Obturator nerve (post. division)
36
Active external rotation of hip muscles: (6)
- piriformis - obturator internus - superior gemellus - inferior gemellus - quadratus femoris - obturator externus
37
Active hip ABduction of hip muscles: (5)
- piriformis - obturator internus - superior gemellus - inferior gemellus - obturator externus
38
Active ADduction of hip muscle:
- quadratus femoris
39
Common iliac artery divisions:
- external iliac artery | - internal iliac artery
40
Internal iliac artery divisions:
- anterior trunk | - posterior trunk
41
External iliac artery turns into...
femoral artery
42
Posterior trunk becomes...
superior gluteal artery
43
Anterior trunk becomes...
inferior gluteal artery