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Anatomy > L10 muscles of the gluteal region > Flashcards

L10 muscles of the gluteal region Flashcards

1
Q

superficial muscles of the gluteal region

A

G. Max, G. Medius, G. Minimus, TFL

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2
Q

inserts at the lat surface of the greater trochanter (femur)

A

G. Medius

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3
Q

both superficial glute muscles insert at the iliotibial tract

A

G. Max, TFL

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4
Q

insertion at the iliotibial tract allows wat movement?

A

knee extension

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5
Q

main action is to ABD thigh, tilt pelvis ant when walking (to permit opposition to clear ground), and IR of thigh

A

G. Medius

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6
Q

G. minimus is a synergist to wat muscle

A

G. Medius

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7
Q

deep muscles of the gluteal region

A

piriformis, obturator internus,

gemellus sup, gemellus inf, quadratus femoris

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8
Q

which deep muscles of the gluteal region insert at the upper bor. of the greater trochanter?

A

piriformis, OI, GS, GI

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9
Q

insertion of the quadratus femoris

A

quadrate tubercle of the femur

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10
Q

what deep glute muscle acts to stabilize the femoral head to the acetabulum

A

quadratus femoris

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11
Q

main action of the deep layer of the glute region

A

LR of thigh at hip joint

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12
Q

which deep glute muscle originates at the spine of the ischium?

A

gemellus sup

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13
Q

where does the piriformis originate among the ff.

a) ant surface of sacrum
b) ischial tuberosity
c) lat bor. of the ischial tuberosity

A

a) ant surface of sacrum

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14
Q

where does the gemellus inf originate among the ff.

a) ant surface of sacrum
b) ischial tuberosity
c) lat bor. of the ischial tuberosity

A

b) ischial tuberosity

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15
Q

where does the quadratus femoris originate among the ff.

a) ant surface of sacrum
b) ischial tuberosity
c) lat bor. of the ischial tuberosity

A

c) lat. bor. of the ischial tuberosity

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16
Q

where does the obturator internus originate

A

inner surface of the obturator membrane

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17
Q

what are the innervations of the deep glute muscles

A

piriformis - S1 & S2 nerves

GS, OI, GI, QF - sacral plexus

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18
Q

what are the red carpet muscles

A

OI, GS, GI, QF

- cuz the sciatic nerve (nerve beneath piriformis) passes above em

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19
Q

how many fascial compartments does the thigh have?

A

3

  • ant
  • med
  • post
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20
Q

muscles of the anterior compartment of the thigh

A

sartorius, iliopsoas (iliacus, psoas),
pectineus, quadratus femoris (4)
-quadratus femoris - - rectus femoris, vastus medialis, lateralis, & intermedius

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21
Q

muscles of the medial compartment of the thigh

A

gracilis, add. longus, add. brevis, add. magnus, obturator externus

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22
Q

muscles of the post compartment of the thigh

A

Biceps femoris (long & short heads)
semitendinosus
semimembranosus
add. magnus

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23
Q

which compartment of the thigh has innervations at the femoral nerve & lumbar plexus?

A

ant

all muscles innervate at the femoral nerve except psoas

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24
Q

common origin of the vastus muscles

A

femoral shaft

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25
Q

origin of the iliacus

A

iliac fossa within the abdomen

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26
Q

origin of the Sartorius

A

ASIS

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27
Q

where does the rectus femoris originate

a) TP, bodies and iv discs of T12 & L1-L5
b) sup ramus of the pubis
c) AIIS, ilium above acetabulum

A

c) AIIS, ilium above acetabulum

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28
Q

where does the pectineus originate

a) TP, bodies and iv discs of T12 & L1-L5
b) sup ramus of the pubis
c) AIIS, ilium above acetabulum

A

b) sup ramus of the pubis

29
Q

where does the psoas originate

a) TP, bodies and iv discs of T12 & L1-L5
b) sup ramus of the pubis
c) AIIS, ilium above acetabulum

A

a) TP, bodies and iv discs of T12 & L1-L5

30
Q

common insertion of the iliacus & psoas

A

lesser trochanter

31
Q

what ant thigh muscle inserts at the upper medial surface of the tibial shaft

A

sartorius

32
Q

insertion of the pectineus

A

linea aspera of the femur (upper end)

33
Q

insertion of the quadriceps femoris muscle grp

A

quad tendon into the patella; tibial tuberosity

34
Q

action of the sartorius muscle

A

FABER hip, FLEX, IR leg

35
Q

common action of vastus muscles

A

leg EXT

36
Q

which ant thigh muscle flexes and adducts the thigh

A

pectineus

37
Q

action of iliopsoas

A

flexes thigh on trunk

if trunk is fixed, flexes trunk on thigh

38
Q

action of quadriceps femoris

A

extends leg, flexes thigh

39
Q

multi jointed muscles of the ant thigh muscles

A

sartorius, quad femoris

40
Q

common innervation of the medial thigh muscles

A

obturator nerve

- add. magnus also innervates at the sciatic nerve

41
Q

which medial thigh muscles insert at the linea aspera

A

add. longus, add. brevis, add. magnus

add. magnus also inserts at add. tubercle of femur

42
Q

which medial thigh muscle insert at

the upper part of the tibial shaft’s medial surface

A

gracilis

43
Q

where does the obturator externus insert

A

medial surface of the greater trochanter

44
Q

obturator externus acts to __ the thigh

A

LR

45
Q

common action of add. longus, brevis, & magnus

A

add thigh, helps in LR

46
Q

which medial muscle acts to add thigh and flex leg

A

gracilis

47
Q

common origin of the posterior thigh muscles

A

ischial tuberosity
except short head of biceps femoris
- linea aspera, supracondylar ridge

48
Q

common innervation of the post thigh muscles

A

tibial portion of the sciatic nerve

EXCEPT short head - common peroneal nerve

49
Q

insertion of the biceps femoris

A

head of fibula

50
Q

insertion of the add. magnus

A

add. tubercle (femur)

51
Q

which post deep thigh muscle inserts at the medial condyle of the tibia

A

semimembranosus

52
Q

which post deep thigh muscle inserts at the upper part of the medial surface of the tibial shaft

A

semitendinosus

53
Q

which post deep thigh muscles flexes & MR leg, extends thigh

A

semitendinosus, semimembranosus

54
Q

action of add. magnus

A

thigh ext

55
Q

which post thigh muscles flexes & LR leg

A

biceps femoris muscle grp

-long head also extends thigh

56
Q

these 3 muscles have conjoined tendon & inserts at the same point
- overuse injuries are common among these 3

A

Pes Anserinus muscle = SarGenT (SGT) Muscles

Sartorius, Gracilis, Semitendinosus

57
Q

muscles of the hamstring grp

A
  • biceps femoris
  • semitendinosus
  • semimbranosus
    add. magnus also has a hamstring portion
58
Q

as a grp, the hamstrings muscles act to do wat

A

extend at the hip

flex at the knee

59
Q

hip flexors, determine which is the ff.

  • intiator,
  • PM,
  • accessory ones
A

RF = PM
iliopsoas = initiator
TFL & pectineus = accessory

60
Q

name the 4 hip extensor muscles, and determine the PM

A

G. max = PM

hamstrings (semitendinosus, semimembranosus, biceps femoris)

61
Q

IR of knee

A

sartorius, semimembranosus, gracilis

62
Q

ER of knee

A

biceps femoris (long & short heads)

63
Q

for hip ER, determine the PM during the ff. action

  • during hip EXT
  • during hip FLEX
A 
EXT = Piriformis — cuz G. max fibers are alr shortened during hip EXT 
FLEX = G. Max
64
Q

5 hip add. muscles, determine which is the PM

A 
PM = add. magnus (cuz of its size)
others 
- add. longus & brevis, 
- obturator externus, 
- gracilis
64
Q

During ipsidirectional lumbo-pelvic rhythm, __ follows direction of ___.

A

lumbar spine follows direc of pelvis & hip

64
Q

FORWARD BENDING is a movement that follows the ipsidirectional lumbo-pelvic rhythm. To reach our toes, initial movement comes from __, afterwards, what happens?

A

initial movement -> lumbar spine

after initiation -> pelvis rotates on hip => full ROM is achieved

65
Q

During CONTRADIRECTIONAL lumbo-pelvic rhythm, __ doesn’t follow the direction of ___.

A

lumbar spine

pelvis, hip

66
Q

CONTRADIRECTIONAL lumbo pelvic rhythm is usually seen in what types of movements?

A

OCK movements — there’s dissociation between trunk & hip

single leg activities

67
Q

CONTRADIRECTIONAL lumbo-pelvic rhythm

- in frontal plane, 2 muscle grps are acting as one to MAINTAIN a level pelvis, how?

A

isometric contraction of the ff., one on the hip joint, one on the spine

  • abd muscles
  • lat trunk flexor of opp side of stance leg

Anatomy (7 decks)

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