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LE Muscles Flashcards

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1
Q

Iliopsoas is a combination of what two muscles?

A

Ilacus, psoas major

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2
Q

Iliacus attachments

A

iliac fossa, iliac crest, sacral ala, sacroiliac ligaments
to
lesser trochanter of femer

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3
Q

Iliacus actions

A

Flexion and stabilization of hip joint

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4
Q

Peripheral and segmental innervation of iliacus

A

femoral nerve

L2, 3, 4

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5
Q

Name attachments, actions, peripheral and segmental innervation
Psoas major

A

anterior transverse processes, vertebral bodies, & discs of T12-L5
to
lesser trochanter of femur

flexion and stabilization of hip joint

ventral rami of L1-L4
L1,2,3,4

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6
Q

Name attachments, actions, peripheral and segmental innervation
Rectus Femoris

A

AIIS, groove superior to acetabulum
to
base of patella

flexion of hip, extension of knee

femoral nerve
L2,3,4

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7
Q

Name attachments, actions, peripheral and segmental innervation
Sartorius

A

ASIS to medial aspect of proximal tibia (pes anserine)

Flexion, abduction, lateral rotation of hip, flexion & assists of medial rotation of knee

Femoral nerve
L2-3

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8
Q

Name attachments, actions, peripheral and segmental innervation
Tensor Fasciae Latae

A

ASIS & external lip of iliac crest to IT tract

Abduction, flexion & medial rotation of hip, assists in maintaining knee extension

Superior gluteal nerve
L4,5,S1

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9
Q

Name attachments, actions, peripheral and segmental innervation
Vastus Intermedius

A

Anterior aspect of proximal 2/3 femoral shaft to lateral border of patella

Extension of knee

Femoral nerve
L2,3,4

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10
Q

Name attachments, actions, peripheral and segmental innervation
Vastus Lateralis

A

intertrochanteric line, greater trochanter, gluteal tuberosity, linea aspera to base & lateral patella

Knee extension

Femoral nerve
L2,3,4

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11
Q

Name attachments, actions, peripheral and segmental innervation
Vastus Medialis

A

intertrochanteric line, spiral line, linea aspera, supracondylar line to base and medial patella

Extend leg

Femoral nerve
L2,3,4

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12
Q

Name attachments, actions, peripheral and segmental innervation
Articularis genu

A

distal anterior shaft of femur to proximal portion of synovial membrane of knee joint

Pulls articular capsule proximally

Femoral nerve
L2,3,4

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13
Q

Name attachments, actions, peripheral and segmental innervation
Adductor brevis

A

inferior pubic ramus to distal 2/3 pectineal line and medial lip of linea aspera

Adduction and flexion of hip

Obturator nerve
L2,3,4

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14
Q

Name attachments, actions, peripheral and segmental innervation
Adductor longus

A

pubic crest to medial lip of linea aspera

Adducts, medially rotates, and flexes hip

obturator nerve
L2,3,4

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15
Q

Name attachments, actions, peripheral and segmental innervation
Adductor magnus

A

inferior pubic ramus, ischial ramus & tuberosity to gluteal tuberosity, linea aspera (adductor part), medial supracondylar ridge, adductor tubercle of femur (hamstring part)

Adduction, flexion (adductor part), extension (hamstring part) of hip

Adductor part: obturator nerve, L2,3,4
Hamstring part: tibial division of sciatic nerve, L4,5,S1

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16
Q

Name attachments, actions, peripheral and segmental innervation
Gracilis

A

body of pubis & inferior pubic ramus to pes anserine

Flexion and medial rotation of knee, adduction of hip

Obturator nerve
L2,3,4

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17
Q

Name attachments, actions, peripheral and segmental innervation
Pectineus

A

superior pubic ramus to femur between lesser trochanter & linea aspera

Adducts, flexes hip

Femoral nerve & obturator nerve
L2,3,4

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18
Q

Name attachments, actions, peripheral and segmental innervation
Obturator externus

A

from rami of the pubis and ischium, external surface obturator membrane to trochanteric fossa

lateral rotation of hip

obturator nerve
L3,4

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19
Q

Name attachments, actions, peripheral and segmental innervation
Superior gemellus

A

external surface spine of ischium via obturator internus tendon to greater trochanter

lateral rotation of hip

sacral plexus
L5, S1,2

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20
Q

Name attachments, actions, peripheral and segmental innervation
Inferior gemellus

A

proximal ischial tuberosity via obturator internus tendon to greater trochanter

lateral rotation of hip

sacral plexus
L4,5, S1

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21
Q

Name attachments, actions, peripheral and segmental innervation
Gluteus maximus

A

aponeurosis of the erector spinae, sacrum, sacrotuberous ligament & posterior gluteal line to greater trochanter, gluteal tuberosity of the femu & IT tract

extension and lateral rotation of hip

inferior gluteal nerve
L5, S1-2

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22
Q

Name attachments, actions, peripheral and segmental innervation
Gluteus medius

Study These Flashcards
A

from external iliac surface to the oblique ridge on the lateral aspect of the greater trochanter to gluteal aponeurosis

abduction and medial rotation of hip; keeps the pelvic level when opposite leg is raised

superior gluteal nerve
L4, 5, S1

23
Q

Name attachments, actions, peripheral and segmental innervation
Gluteus minimus

Study These Flashcards
A

external iliac surface and margin of the greater sciatic notch to the anterolateral aspect of the greater trochanter

abduction and medial rotation of hip; keeps pelvis level when opposite leg is raised

superior gluteal nerve
L4, 5, S1

24
Q

Name attachments, actions, peripheral and segmental innervation
Obturator internus

Study These Flashcards
A

anterolateral wall of the pelvis & obturator membrane to the medial surface of the greater trochanter

lateral rotation of hip

nerve to he obturator internus from sacral plexus
L5, S1-2

25
Name attachments, actions, peripheral and segmental innervation Piriformis
anterolateral sacrum & posterior inferior iliac spine to the upper border of the greater trochanter abduction and lateral rotation of hip nerve to piriformis S1-2
26
Name attachments, actions, peripheral and segmental innervation Quadratus femoris
from the ischial tuberosity to the quadrate tubercle of the femur lateral rotation of hip nerve to the quadratus femoris from sacral plexus L4, 5, S1
27
Name attachments, actions, peripheral and segmental innervation Biceps femoris
ischial tuberosity & sacrotuberous ligament (long head); lateral lip of linea aspera & lateral supracondylar line (short head) to the lateral side of fibular head flexion and lateral rotation of the knee (both heads) extension of hip (long head only) tibial division of sciatic (long head), fibular division of sciatic nerve (short head) long head: L5, S1,2,3 short head: L5, S1,2
28
Name attachments, actions, peripheral and segmental innervation Semimembranosus
ischial tuberosity to posterior aspect of the medial tibial condyle extension of hip, flexion and medial rotation of knee tibial division of the sciatic nerve L4, 5, S1, 2
29
Name attachments, actions, peripheral and segmental innervation Semitendinosus
ischial tuberosity to the proximal, medial tibia (pes anserine) extension of hip, flexion and medial rotation of knee tibial division of the sciatic nerve L4, 5, S1, 2
30
Extensor digitorum longus
lateral tibial condyle, proximal 3/4 of fibula and interosseous membrane to the dorsal digital expansions of toes 2-5 ankle dorsiflexion, extension of 2-5 (IP & MP) deep fibular nerve L4, 5, S1
31
Extensor hallucis longus
middle 1/2 of fibular surface & interosseous membrane to the distal phalangeal base of 1st toe ankle dorsiflexion, extends great toe (MP & IP) deep fibular nerve L4, 5, S1
32
Fibularis tertius
distal fibula and interosseous membrane to base of 5th metatarsal ankle dorsiflexion, eversion deep fibular nerve L4, 5, S1
33
Tibialis anterior
lateral condyle and proximal 2/3 of the tibia's lateral surface and interosseous membrane to the medial cuneiform and adjacent 1st metatarsal ankle dorsiflexion, inversion deep fibular nerve L4, 5, S1
34
Fibularlis longus
head & proximal 2/3 of fibula to the lateral aspect of 1st metatarsal and adjacent medial cuneiform eversion, anke plantarflexion, depresses 1st metatarsal head superficial fibular nerve L4, 5, S1
35
Fibularis brevis
distal 2/3 of tibula to lateral base of 5th metatarsal eversion, plantarflexion superficial fibular nerve L4, 5, S1
36
Flexor digitorum longus
posterior tibia distal to the soleal line to the plantar surface of the distal phalangeal bases plantarflexion, flexion of digits 2-5 (MP & IP) tibial nerve L5, S1, 2
37
Flexor hallucis longus
distal 2/3 of posterior fibular surface and interosseous membrane to the plantar aspect of the distal phalangeal base of the 1st toe plantarflexion, great toe flexion (MP & IP) tibial nerve L5, S1, 2
38
Gastrocnemius
posterior aspect of the femoral condyles and joint capsule to the posterior calcaneal surface knee flexion, ankle plantarflexion tibial nerve S1, 2
39
Plantaris
lateral supracondylar line to posterior calcaneal surface knee flexion, ankle plantarflexion tibial nerve L4, 5, S1
40
Popliteus
lateral femoral condyle and oblique popliteal ligament to the soleal line of the tibia NWB: medial rotation of tibia and knee flexion WB: insertion is fixed; lateral rotation of femur and knee flexion Unlocks the knee from extension into early flexion tibial nerve L4, 5, S1
41
Soleus
posterior aspect of the head & proximal 1/4 of fibula and tibial soleal line to the posterior calcaneal surface plantarflexion tibial nerve L5, S1, 2
42
Tibialis posterior
interosseous membrane, lateral tibial surface & medial fibular surface to the navicular, medial & intermediate cuneiforms and bases of metatarsals 2-4 inversion, plantarflexion tibial nerve L4, 5, S1
43
Abductor digiti minimi
calcaneal tuberosity to lateral side of proximal phalangeal base of 5th digit abduction and flexion of 5th digit lateral plantar nerve S1-2
44
Abductor hallucis
medial calcaneal tuberosity to medial side of proximal phalangeal base of great toe flexion and abduction of great toe medial plantar nerve L4, 5, S1
45
Adductor hallucis
from 2-4th metatarsal bases (oblique head) and distal ends of 3-5 metatarsal (transverse head) to lateral base of the proximal phalanx of great toe adduction of great toe lateral plantar nerve S1-2
46
Extensor digitorum brevis
anterolateral calcaneus to dorsal aspect of the base of the proximal phalanx extension of digits 2-5 (MP & IP) deep fibular nerve L4, 5, S1
47
Extensor hallucis brevis
extensor digitorum brevis to dorsal aspect of the base of the proximal phalanx of the hallux extension of great toe at MTP joint deep fibular nerve L4, 5, S1
48
Quadratus plantae
medial surface of calcaneus and lateral process of calcaneal tuberosity to long flexor tendons assists with flexor digitorum longus lateral plantar nerve S1-2
49
Flexor digitorum brevis
medial process of calcaneal tuberosity to sides of intermediate phalanges of digits 2-5 flexion of toes (proximal IP) medial plantar nerve L4, 5, S1
50
Flexor digiti minimi brevis
5th metatarsal base to proximal phalangeal base flexion of 5th digit (MP) lateral plantar nerve S1-2
51
Flexor hallucis brevis
cuboid & tendon of tibialis posterior to base of the proximal phalanx of great toe flexion of great toe (MP) medial plantar nerve L4, 5, S1
52
Dorsal interossei
metatarsal shafts to proximal phalangeal bases & dorsal digital expansion of digits 2-4 abduction (MP) and flexion (MP) of digits 2-4 lateral plantar nerve S1-2
53
Plantar interossei
plantar surface of base of metatarsals to dorsal digital expansions of digits 3-5 adduction and flexion (MP) of digits 3-5 lateral plantar nerve S1-2
54
Lumbricals
tendons of flexor digitorum longus to medial sides of dorsal expansions of digits 2-5 flexion of proximal phalanges (MP) and extension of IP joints 1: medial plantar nerve 2-4: lateral plantar nerve

Anatomy (17 decks)

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