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Anatomy II > Exam 2: Lower Limb lecture vi > Flashcards

Exam 2: Lower Limb lecture vi Flashcards

1
Q

gluteal muscles: piriformis origin

A

anterior sacrum

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2
Q

gluteal muscles: piriformis insertion

A

to greater trochanter

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3
Q

gluteal muscles: piriformis innervation

A

nerve to piriformis

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4
Q

gluteal muscles: piriformis action

A

laterally rotate thigh; stabilize hip joint

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5
Q

what nerve emerges just inferior to the piriformis

A

sciatic nerve

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6
Q

gluteal muscles: obturator internus, superior gemellus, and inferior gemellus: origin for all 3

A

from bone surrounding obturator membrane, ischial spine, and ischial tuberosity

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7
Q

gluteal muscles: obturator internus, superior gemellus, and inferior gemellus: insertion for all 3

A

to greater trochanter

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8
Q

gluteal muscles: obturator internus, superior gemellus, and inferior gemellus: actions

A

lateral rotation of thigh and stabilization of hip joint

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9
Q

gluteal muscles: quadratus femoris origin

A

ischial tuberosity

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10
Q

gluteal muscles: quadratus femoris insertion

A

to intertrochanteric crest

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11
Q

gluteal muscles: quadratus femoris innervation

A

nerve to quadratus femoris

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12
Q

gluteal muscles: quadratus femoris action

A

lateral rotation of thigh and hip stabilization

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13
Q

posterior thigh muscles: the _, except for the short head of

A

the hamstrings, except for the short head of biceps femoris

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14
Q

posterior thigh muscles: originate on the _ deep to _

A

except short head of biceps femoris; originate on the ischial tuberosity deep to gluteus maximus

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15
Q

posterior thigh muscles: insert on

A

except short head of biceps femoris; insert on the bones of the leg

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16
Q

posterior thigh muscles: span _ joints, extending the _ and flexing the _

A

except for the short head of biceps femoris; span 2 joints, extending the hip and flexing the knee

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17
Q

posterior thigh muscles: are innervated by the _ division of the _ nerve

A

except for short head of biceps femoris; are innervated by the tibial division of the sciatic nerve

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18
Q

posterior thigh muscles: semitendinosus origin

A

ischial tuberosity

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19
Q

posterior thigh muscles: semitendinosus insertion

A

to medial surface of superior tibia

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20
Q

posterior thigh muscles: semitendinosus innervation

A

tibial division of sciatic nerve

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21
Q

posterior thigh muscles: semitendinosus action

A

extend thigh; flex leg

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22
Q

posterior thigh muscles: semimembranosus origin

A

ischial tuberosity

23
Q

posterior thigh muscles: semimembranosus insertion

A

to posterior part of medial tibial condyle and lateral femoral condyle as OBLIQUE POPLITEAL LIGAMENT

24
Q

posterior thigh muscles: semimembranosus innervation

A

tibial division of sciatic nerve

25
Q

posterior thigh muscles: semimembranosus action

A

extend thigh; flex leg

26
Q

posterior thigh muscles: biceps femoris action

A

long head only: extend thigh

short head: flex leg

27
Q

posterior thigh muscles: biceps femoris long head origin

A

ischial tuberosity

28
Q

posterior thigh muscles: biceps femoris long head insertion

A

to head of fibula

29
Q

posterior thigh muscles: biceps femoris long head innervation

A

tibial division of sciatic nerve

30
Q

posterior thigh muscles: biceps femoris short head origin

A

linea aspera and lateral supracondylar line of femur

31
Q

posterior thigh muscles: biceps femoris short head insertion

A

to head of fibula

32
Q

posterior thigh muscles: biceps femoris short head innervation

A

common fibular division of sciatic nerve

33
Q

lumbar plexus (in abdominopelvic cavity) formed by contributions from the ventral rami of spinal nerves _

A

lumbar 1 through 4

34
Q

lumbar plexus branches include (3 that we’re learning)

A
  1. femoral nerve (most anterior thigh muscles)
  2. obturator nerve (medial thigh muscles)
  3. part of the lumbosacral trunk
35
Q

sacral plexus (in abdominopelvic cavity): located on _

A

posterior wall of lesser pelvis

36
Q

sacral plexus (in abdominopelvic cavity): formed by contributions from the ventral rami of spinal nerves _

A

lumbar 4, lumbar 5, and sacral 1 through sacral 4

37
Q

sacral plexus (in abdominopelvic cavity): lumbosacral trunk is formed by part of the _ nerve united with the _; it contributes to the _ plexus

A

part of the L4 nerve united with the ventral ramus of the L5 nerve; contributes to the sacral plexus

38
Q

sacral plexus (in abdominopelvic cavity): fibers of the ventral (anterior) division that form the _ nerve go on to form the _ nerve

A

sciatic nerve go on to form the tibial nerve

39
Q

sacral plexus (in abdominopelvic cavity): fibers of the dorsal (posterior) division that form the _ nerve go on to form the _ nerve

A

sciatic nerve go on to form the common fibular nerve

40
Q

everything from the knee down is supplied by the _ nerve

A

sciatic nerve

41
Q

sacral plexus: major nerves we are learning (7) hint: nerves to gluteal muscles + 3 others

A
  1. superior gluteal nerve
  2. inferior gluteal nerve
  3. nerve to piriformis
  4. sciatic nerve
  5. nerve to quadratus femoris
  6. posterior femoral cutaneous nerve (posterior cutaneous nerve of thigh)
  7. pudendal nerve
42
Q

perineum (space btwn the legs) nerves: pudendal nerve is the chief sensory nerve of the _; it is in the _ region only briefly and then leaves it to enter the perineum

A

external genitalia; in the gluteal region only briefly

43
Q

only the _ rami that forms plexuses

A

ventral (anterior)

44
Q

gluteal and posterior thigh regions: nerves in these regions nearly all rise from the _ except _

A

sacral plexus except the clunial nerves

45
Q

gluteal and posterior thigh regions: clunial nerves are (superficial/deep?) and supply the skin of _

A

superficial; supply skin of buttocks

46
Q

gluteal and posterior thigh regions: superior gluteal nerve leaves pelvis through _; supplies _ (3 muscles)

A

leaves pelvis through greater sciatic foramen; supplies gluteus medius, gluteus minimus; tensor fasciae latae

47
Q

gluteal and posterior thigh regions: inferior gluteal nerve leaves pelvis through _; supplies _ (1 muscle)

A

leaves through greater sciatic foramen; supplies gluteus maximus

48
Q

gluteal and posterior thigh regions: sciatic nerve is the continuation of the

A

main part of the sacral plexus

49
Q

gluteal and posterior thigh regions: sciatic nerve leaves pelvis through

A

greater sciatic foramen

50
Q

gluteal and posterior thigh regions: sciatic nerve is really 2 nerves, _ and _, which are loosely bound together in the same connective tissue sheath

A

tibial nerve and common fibular nerve

51
Q

gluteal and posterior thigh regions: sciatic nerve does not supply

A

any structures in the gluteal region

52
Q

gluteal and posterior thigh regions: sciatic nerve does supply

A

posterior thigh muscles, all muscles of the leg and foot, skin of most of the leg and foot, and all lower limb joints

53
Q

gluteal and posterior thigh regions: nerve to quadratus femoris supplies (3)

A

hip joint, inferior gemellus, and quadratus femoris

54
Q

gluteal and posterior thigh regions: posterior (femoral) cutaneous nerve of thigh supplies (5)

A

skin of buttocks, posterior thigh, posterior calf, lateral perineum; and upper medial thigh

Anatomy II (28 decks)

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