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anatomy > muscles of thigh + butt > Flashcards

muscles of thigh + butt Flashcards

1
Q

Site of origin + insertion of the sartorius muscle

A

Originate: anterosuperior iliac spine
Trajectory: inferomedial, covering the trajectory of the femoral artery
Insertion: medial region of proximal tibia

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2
Q

Innervation of the muscles in the anterior compartment of the thigh

A

Femoral nerve

EXCEPTION: psoas major — ventral rami of lumbar spinal nerves

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3
Q

Function of the ilipsoas

A

Hip flexion

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4
Q

Function of the quadriceps

A

Knee extension

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5
Q

Components of the quadriceps

A

Rectus femoris + vastus (intermedius, lateralis + medialis)

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6
Q

Function of the sartorius

A

Knee + hip flexion

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7
Q

Where does the reflected tendon of the rectus femoris originate

A

Subraacetabular groove

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8
Q

Site of insertion of the muscles of the quads

A

Anterior region of the femur + linea aspera

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9
Q

Trajectory of the quadriceps

A

The 4 muscles converge and the tendon moves inferiorly, becoming continuous with the patellar ligament + inserting into the tibial tuberosity

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10
Q

Origin + insertion of gracilis

A

Origin: inferior branch of pubis
Insertion: medial portion of proximal tibia

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11
Q

Nerve that innervates the adductors

A

Obturator nerve

EXCEPTION: pectineus — femoral nerve

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12
Q

Site of origin + insertion of the pectineus muscle

A

Origin: Pecten pubis
Insertion: medial region of proximal femur

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13
Q

Site of origin + insertion of the adductor longus

A

Origin: pubis
Insertion: medial intermediate portion of the femur

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14
Q

Compartments of the thigh + the function of the muscles

A

Anterior — extensors
Posterior — flexors of the knee
Medial — adductors

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15
Q

Site of origin + insertion of the adductor brevis

A

Origin: pubis
Insertion: medial intermediate portion of the femur, posterior to the adductor longus

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16
Q

Site of origin + insertion of the obturator externus

A

Origin: anterior part of the obturator membrane
Trajectory: oblique orientation of fibres, converge in the inferior acetabular groove
Insertion: intertrochanteric crest

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17
Q

Which muscle forms the adductor hiatus

A

Adductor magnus

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18
Q

Site of origin of the 2 parts of the adductor magnus

A

Adductor part: inferior pubic ramus

Posterior part: ischium

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19
Q

Nerves that innervate the adductor magnus

A

Adductor portion: obturator nerve

Posterior portion: sciatic nerve

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20
Q

Which artery passes through the adductor hiatus + what is it called afterwards?

A

Femoral artery, becomes popliteal artery

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21
Q

Site of insertion of the 2 portions of the adductor magnus

A

Adductor part: medial portion of distal femur (close to the medial epicondyle)
Posterior part: posterolateral portion of the femoral shaft

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22
Q

Nerve that innervates the posterior compartment of the thigh

A

Sciatic nerve

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23
Q

Muscles that make up the posterior compartment of the thigh

A

Semitendinosus, semimembranosus + biceps femoris

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24
Q

The semitendinosus originates in…

A

The ischial tuberosity

25
Q

Insertion of semitendinosus

A

Medial portion of proximal tibia

26
Q

The semimembranosus originates in…

A

The ischial tuberosity

27
Q

Insertion of the semimembranosus

A

Posterior part of the medial condyle of the proximal tibia

28
Q

The long head of the biceps femoris originates in…

A

The ischial tuberosity

29
Q

Insertion of the tendon of the biceps femoris

A

Fibular head (laterally)

30
Q

Function of the muscles in the posterior compartment

A

Knee flexion

31
Q

The short head of the biceps femoris originates in…

A

The linea aspera (posterior part of the femur)

32
Q

What is the pes anserinus (goose foot)?

A

The joining of the tendons of the sartorius, gracilis + semitendinosus in the anteromedial region of the proxima tibia

33
Q

Where does the iliopsoas insert?

A

Lesser trochanter

34
Q

The gluteus maximus originates in…

A

The posterior region of the ilium + sacrum

35
Q

Where does the gluteus maximus insert?

A

Into the gluteal tuberosity (femur) + the posterior border of the TFL

36
Q

Name the 2 main functions of the gluteus maximus

A
  1. hip extension

2. external rotation

37
Q

The nerve that innervates the gluteus maximus is…

A

The inferior gluteal nerve

38
Q

The TFL originates in… and …

A

The anterosuperior iliac spine + iliac crest

39
Q

Where does the fascia lata insert?

A

Lateral portion of the tibia

40
Q

The extension of the TFL stabilizes the knee + …

A

Contributes to knee flexion

41
Q

The TFL is a … muscle

A

Biarticular

42
Q

Name the nerve that innervates the TFL, gluteus medius + minimus

A

Superior gluteal nerve

43
Q

The gluteus medius arises from…

A

The posterior surface of the ilium

44
Q

Where does the gluteus medius insert?

A

Into the greater trochanter

45
Q

The functions of both the gluteus medius + minimus are…

A

Hip abduction + internal rotation

46
Q

The gluteus minimus arises from…

A

The lateral portion of the ilium

47
Q

Both the gluteus medius + minimus insert into …

A

The greater trochanter

48
Q

Where do the gemelli originate?

A

Ischial region

49
Q

The gemelli insert into the … region of the … (alongside the tendon of the …)

A

Medial, greater, obturator internus

50
Q

The function of the deep muscles of the butt (gemelli, piriformis, obturator internus + quadratus femoris) is

A

External rotation

51
Q

The piriformis originates in… and inserts in…

A

Anterior portion of the sacrum, medial region of the greater trochanter

52
Q

The obturator internus arises from… and inserts into…

A

Obturator membrane, inserts into the medial region of the greater trochanter

53
Q

The quadratus femoris arises from…

A

The ischial tuberosity

54
Q

Where does the quadratus femoris insert?

A

Intertrochanteric crest

55
Q

The nerve to obturator internus innervates…

A

The obturator internus + the superior gemellus

56
Q

The quadratus femoris + inferior gemellus are innervated by…

A

The nerve to quadratus femoris

57
Q

Which of the following muscles of the deep layer of the butt has its own nerve?

a) obturator internus
b) gemellus inferior
c) piriformis
d) neither one of them

A

c)

58
Q

The nerve to piriformis arises from which segments of the spinal cord?

A

S1-S2

anatomy (23 decks)

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