Muscles Flashcards

1
Q

Common features of the hamstring group

A

They all flex the knee, extend the hip and posteriorly tilt the pelvis.

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2
Q

Muscles of the hamstring group

A

Biceps femoris, semimembranosus, semitendinosus

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3
Q

Origin of the biceps femoris

A

Long head originates on the ischial tuberosity and the short head on the lateral lip of the linea aspera.

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4
Q

Insertion of the biceps femoris

A

Head of the fibula

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5
Q

Actions of the biceps femoris

A

Flex the knee, extend the hip, posteriorly tilt the pelvis, laterally rotate the flexed knee and laterally rotate the hip.

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6
Q

Innervation of the biceps femoris

A

Sciatic nerve. The tibial branch for the long head and the fibular branch for the short head.

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7
Q

Palpation key for biceps femoris

A

Client is prone and resist flexion of the leg and extension of the thigh for the long head.

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8
Q

The knee flexes at the ______ joint.

A

Tibiofemoral.

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9
Q

The hip extends at the _____ joint.

A

Coxal.

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10
Q

The pelvis tilts at the _____ joint.

A

Lumbosacral

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11
Q

Semitendinosus origin

A

Ischial tuberosity

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12
Q

Semitendinosus insertion

A

Proximal medial shaft of the tibia at the pes anserinus tendon.

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13
Q

Semitendinosus actions

A

Flex the knee, extend the hip, posteriorly tilt the pelvis, medially rotate the hip and medially rotate the flexed knee.

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14
Q

Innervation of semitendinosus

A

Tibial branch of the sciatic nerve.

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15
Q

Semitendinosus palpation key

A

Client prone, resist flexion of the leg at the knee.

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16
Q

Semimembranosus origin

A

Ischial tuberosity

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17
Q

Semimembranosus insertion

A

Posterior aspect of the medial condyle of the tibia

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18
Q

Actions of semimembranosus

A

Flex the knee, extend the hip, posteriorly tilt the pelvis, medially rotate the hip, medially rotate the flexed knee.

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19
Q

Innervation of semimembranosus

A

Tibial branch of the sciatic nerve.

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20
Q

Palpation key of semimembranosus

A

Client prone, resist flexion of the leg and palpate on either side of semitendinosus.

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21
Q

Common features of quadriceps femoris group

A

All extend the knee, insert at the tibial tuberosity and are innervated by the femoral nerve.

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22
Q

Muscles of the quadriceps femoris group

A

Rectus femoris, vastus intermedius, vastus lateralis, vastus medialis.

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23
Q

Origin of rectus femoris

A

Anterior inferior iliac spine (AIIS)

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24
Q

Insertion of rectus femoris

A

Tibial tuberosity via the patellar tendon

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25
Q

Actions of the rectus femoris

A

Extend the knee at the tibiofemoral joint and flexes the hip at the coxal joint.

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26
Q

Innervation of the rectus femoris

A

Femoral nerve

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27
Q

Palpation key of the rectus femoris

A

Client supine with legs dangling; resist extension of the knee for the lower fibers and flexion of the thigh for upper fibers.

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28
Q

Origin of vastus intermedius

A

Anterior and lateral shaft of the femur

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29
Q

Insertion of the rectus femoris

A

Tibial tuberosity via the patellar tendon.

30
Q

Action of the vastus intermedius

A

Extends the knee at the tibiofemoral joint.

31
Q

Innervation of the vastus intermedius

A

Femoral nerve

32
Q

Palpation key of vastus intermedius

A

Client supine with legs dangling; resist extension of the leg.

33
Q

Origin of vastus medialis

A

Medial lip of the linea aspera

34
Q

Insertion of vastus medialis

A

Tibial tuberosity via the patellar tendon.

35
Q

Action of the vastus medialis

A

Extend the knee at the tibiofemoral joint.

36
Q

Innervation of the vastus medialis

A

Femoral nerve.

37
Q

Palpation key of the vastus medialis

A

Client supine with legs dangling; resist extension of the leg.

38
Q

Origin of vastus lateralis

A

Lateral lip of the linea aspera.

39
Q

Insertion of vastus lateralis

A

Tibial tuberosity via the patellar tendon

40
Q

Action of vastus lateralis

A

Extend the knee at the tibiofemoral joint.

41
Q

Innervation of vastus lateralis

A

Femoral nerve

42
Q

Palpation key of vastus lateralis

A

Client supine with legs dangling; resist extension of the leg.

43
Q

Origin of the gluteus maximus

A

Coccyx, edge of the sacrum, posterior iliac crest and sacroiliac and sacrotuberous ligaments.

44
Q

Insertion of the gluteus maximus

A

Upper fibers insert to the iliotibial tract and the lower fibers to the gluteal tuberosity.

45
Q

Actions of the gluteus maximus

A

Extends, laterally rotates and abducts the hip. Lower fibers also adduct the hip.

46
Q

Innervation of the gluteus maximus

A

Inferior gluteal nerve.

47
Q

Palpation key of the gluteus maximus

A

Client prone, resist extension of the thigh with the leg rotated laterally.

48
Q

Origin of the gluteus medius

A

Lateral ilium, just below the iliac crest between the gluteal lines.

49
Q

Insertion of the gluteus medius

A

Lateral aspect of the greater trochanter.

50
Q

Actions of the gluteus medius

A

Abduct the hip, the posterior fibers extend and laterally rotate the hip and the anterior fibers flex and medially rotate the hip.

51
Q

Innervation of gluteus medius

A

Superior gluteal nerve

52
Q

Palpation key of gluteus medius

A

Client side-lying, resist adduction of the thigh. Medial fibers can add medial rotation and the posterior fibers lateral rotation.

53
Q

Origin of tensor fascia latae

A

Iliac crest posterior to the ASIS

54
Q

Insertion of tensor fascia latae

A

Iliotibial tract.

55
Q

Actions of tensor fascia latae

A

Flexes, abducts and medially rotates the hip at the coxal joint.

56
Q

Innervation of tensor fascia latae

A

Superior gluteal nerve

57
Q

Palpation key of tensor fascia latae

A

Client supine, place the leg into medial rotation and resist flexion of the thigh.

58
Q

Origin of adductor longus

A

Pubic tubercle

59
Q

Insertion of adductor longus

A

Pectineal line and the medial lip of the linea aspera

60
Q

Actions of adductor longus

A

Adducts, medially rotates and assists to flex the hip at the coxal joint.

61
Q

Innervation of adductor longus

A

Obturator nerve

62
Q

Palpation key of adductor longus

A

Client supine with leg dangling over the side; have client press leg against table.

63
Q

Muscles that flex the hip

A

Tensor fascia latae, rectus femoris, gluteus medius (anterior fibers), adductor longus (assists)

64
Q

Muscles that extend the hip

A

Gluteus maximus, biceps femoris (long head), semitendinosus, semimembranosus, gluteus medius (posterior fibers)

65
Q

Muscles that medially rotate the hip

A

Gluteus medius (anterior fibers), tensor fascia latae, adductor longus, semitendinosus, semimembranosus

66
Q

Muscles that laterally rotate the hip

A

Gluteus maximus, biceps femoris (long head)

67
Q

Muscles that abduct the hip

A

Gluteus maximus, gluteus medius, tensor fascia latae

68
Q

Muscles that adduct the hip

A

Adductor longus, gluteus maximus (lower fibers)

69
Q

Muscles that flex the knee

A

Biceps femoris, semitendinosus, semimembranosus, gastrocnemius

70
Q

Muscles that extend the knee

A

Rectus femoris, vastus lateralis, vastus intermedius, vastus medialis

71
Q

Muscles that medially rotate the flexed knee

A

Semitendinosus and semimembranosus

72
Q

Muscles that laterally rotate the flexed knee

A

Biceps femoris