L10 muscles of the gluteal region

Question 1

superficial muscles of the gluteal region

Answer 1

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

Question 2

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

Answer 2

G. Medius

Question 3

both superficial glute muscles insert at the iliotibial tract

Answer 3

G. Max, TFL

Question 4

insertion at the iliotibial tract allows wat movement?

Answer 4

knee extension

Question 5

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

Answer 5

G. Medius

Question 6

G. minimus is a synergist to wat muscle

Answer 6

G. Medius

Question 7

deep muscles of the gluteal region

Answer 7

piriformis, obturator internus,

gemellus sup, gemellus inf, quadratus femoris

Question 8

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

Answer 8

piriformis, OI, GS, GI

Question 9

insertion of the quadratus femoris

Answer 9

quadrate tubercle of the femur

Question 10

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

Answer 10

quadratus femoris

Question 11

main action of the deep layer of the glute region

Answer 11

LR of thigh at hip joint

Question 12

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

Answer 12

gemellus sup

Question 13

where does the piriformis originate among the ff.

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

Answer 13

a) ant surface of sacrum

Question 14

where does the gemellus inf originate among the ff.

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

Answer 14

b) ischial tuberosity

Question 15

where does the quadratus femoris originate among the ff.

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

Answer 15

c) lat. bor. of the ischial tuberosity

Question 16

where does the obturator internus originate

Answer 16

inner surface of the obturator membrane

Question 17

what are the innervations of the deep glute muscles

Answer 17

piriformis - S1 & S2 nerves

GS, OI, GI, QF - sacral plexus

Question 18

what are the red carpet muscles

Answer 18

OI, GS, GI, QF

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

Question 19

how many fascial compartments does the thigh have?

Answer 19

3

• ant
• med
• post

Question 20

muscles of the anterior compartment of the thigh

Answer 20

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

Question 21

muscles of the medial compartment of the thigh

Answer 21

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

Question 22

muscles of the post compartment of the thigh

Answer 22

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

Question 23

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

Answer 23

ant

all muscles innervate at the femoral nerve except psoas

Question 24

common origin of the vastus muscles

Answer 24

femoral shaft

Question 25

origin of the iliacus

Answer 25

iliac fossa within the abdomen

Question 26

origin of the Sartorius

Answer 26

ASIS

Question 27

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

Answer 27

c) AIIS, ilium above acetabulum

Question 28

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

Answer 28

b) sup ramus of the pubis

Question 29

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

Answer 29

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

Question 30

common insertion of the iliacus & psoas

Answer 30

lesser trochanter

Question 31

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

Answer 31

sartorius

Question 32

insertion of the pectineus

Answer 32

linea aspera of the femur (upper end)

Question 33

insertion of the quadriceps femoris muscle grp

Answer 33

quad tendon into the patella; tibial tuberosity

Question 34

action of the sartorius muscle

Answer 34

FABER hip, FLEX, IR leg

Question 35

common action of vastus muscles

Answer 35

leg EXT

Question 36

which ant thigh muscle flexes and adducts the thigh

Answer 36

pectineus

Question 37

action of iliopsoas

Answer 37

flexes thigh on trunk | if trunk is fixed, flexes trunk on thigh

Question 38

action of quadriceps femoris

Answer 38

extends leg, flexes thigh

Question 39

multi jointed muscles of the ant thigh muscles

Answer 39

sartorius, quad femoris

Question 40

common innervation of the medial thigh muscles

Answer 40

obturator nerve | - add. magnus also innervates at the sciatic nerve

Question 41

which medial thigh muscles insert at the linea aspera

Answer 41

add. longus, add. brevis, add. magnus | add. magnus also inserts at add. tubercle of femur

Question 42

which medial thigh muscle insert at | the upper part of the tibial shaft’s medial surface

Answer 42

gracilis

Question 43

where does the obturator externus insert

Answer 43

medial surface of the greater trochanter

Question 44

obturator externus acts to __ the thigh

Answer 44

LR

Question 45

common action of add. longus, brevis, & magnus

Answer 45

add thigh, helps in LR

Question 46

which medial muscle acts to add thigh and flex leg

Answer 46

gracilis

Question 47

common origin of the posterior thigh muscles

Answer 47

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

Question 48

common innervation of the post thigh muscles

Answer 48

tibial portion of the sciatic nerve | EXCEPT short head - common peroneal nerve

Question 49

insertion of the biceps femoris

Answer 49

head of fibula

Question 50

insertion of the add. magnus

Answer 50

add. tubercle (femur)

Question 51

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

Answer 51

semimembranosus

Question 52

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

Answer 52

semitendinosus

Question 53

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

Answer 53

semitendinosus, semimembranosus

Question 54

action of add. magnus

Answer 54

thigh ext

Question 55

which post thigh muscles flexes & LR leg

Answer 55

biceps femoris muscle grp | -long head also extends thigh

Question 56

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

Answer 56

Pes Anserinus muscle = SarGenT (SGT) Muscles | Sartorius, Gracilis, Semitendinosus

Question 57

muscles of the hamstring grp

Answer 57

- biceps femoris - semitendinosus - semimbranosus add. magnus also has a hamstring portion

Question 58

as a grp, the hamstrings muscles act to do wat

Answer 58

extend at the hip | flex at the knee

Question 59

hip flexors, determine which is the ff. - intiator, - PM, - accessory ones

Answer 59

RF = PM iliopsoas = initiator TFL & pectineus = accessory

Question 60

name the 4 hip extensor muscles, and determine the PM

Answer 60

G. max = PM | hamstrings (semitendinosus, semimembranosus, biceps femoris)

Question 61

IR of knee

Answer 61

sartorius, semimembranosus, gracilis

Question 62

ER of knee

Answer 62

biceps femoris (long & short heads)

Question 63

for hip ER, determine the PM during the ff. action - during hip EXT - during hip FLEX

Answer 63

``` EXT = Piriformis — cuz G. max fibers are alr shortened during hip EXT FLEX = G. Max ```

Question 64

5 hip add. muscles, determine which is the PM

Answer 64

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

Question 64

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

Answer 64

lumbar spine follows direc of pelvis & hip

Question 64

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

Answer 64

initial movement -> lumbar spine | after initiation -> pelvis rotates on hip => full ROM is achieved

Question 65

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

Answer 65

lumbar spine | pelvis, hip

Question 66

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

Answer 66

OCK movements — there's dissociation between trunk & hip | single leg activities

Question 67

CONTRADIRECTIONAL lumbo-pelvic rhythm | - in frontal plane, 2 muscle grps are acting as one to MAINTAIN a level pelvis, how?

Answer 67

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