Muscles of the Anterior and Medial Femoral Compartments Flashcards Preview

MSS - MSK Exam 3 > Muscles of the Anterior and Medial Femoral Compartments > Flashcards

Flashcards in Muscles of the Anterior and Medial Femoral Compartments Deck (48):
1

iliopsoas

**consists of psoas major and iliacus

2

attachments of psoas major

origin:
anterior surfaces of bodies and transverse processes of last thoracic (T12) and all lumbar vertebrae

insertion:
lesser trochanter of femur

3

innervation of psoas major

ventral rami spinal nerves L1,2,3

4

action of psoas major

flexes and laterally rotates thigh

5

attachment of iliacus

origin:
iliac fossa

insertion:
with psoas major to lesser trochanter

6

action of iliacus

flexion and lateral rotation of thigh

7

innervation of iliacus

femoral nerve
-L2,3

8

attachments of sartorious

origin:
ASIS

insertion:
medial tibial below condyle with gracilis and semitendinosus muscles at pes anserinus

9

action of sartorious

flexes leg and rotates it medially
flexes thigh and rotates laterally
abducts lower limb when knee locked

10

innervation of sartorious

femoral nerve

11

muscles of quadriceps femoris?

rectus femoris
vastus lateralis
vastus medialis
vastus intermedialis

12

attachments of rectus femoris?

origin:
straight head - AIIS
reflected head - superior brim of acetabulum

insertion:
superior surface of patella; to tibial tuberosity via patellar ligament

13

action of rectus femoris?

flexion of thigh
extension of leg

14

innervation of rectus femoris

femoral nerve

15

attachments of vastus lateralis

origin:
anterolateral surface of most of femur

insertion:
lateral border of patella; to tibial tuberosity via patellar ligament

16

action of vastus lateralis

extension of leg

17

innervation of vastus lateralis

femoral nerve

18

attachments of vastus medialis

origin:
anteromedial surface of most of femur

insertion:
medial border of patella; to tibial tuberosity via patellar ligament

19

action of vastus medialis

extension of leg; assists in maintaining proper patellar tracking

20

innervation of vastus medialis

femoral nerve

21

attachments of vastus intermedius

origin:
most of anterior surface of femur

insertion:
deep surface of tendon of rectus femoris and other vastus muscles via aponeurosis

22

action of vastus intermedius

extension of leg

23

innervation of vastus intermedius

femoral nerve

24

attachments of articularis genu

origin:
lower anterior surface of femur

insertion:
upper portion of synovial membrane of knee joint

25

action of articularis genu

prevents synovial membrane from becoming trapped between patella and femur when leg extended

26

innervation of articularis genu

femoral nerve

27

anterior femoral muscles?

psoas major
iliacus
sartorius
rectus femoris
vastus lateralis
vastus intermedius
vastus medialis
articular genu

28

muscles of medial femoral compartment?

pectinus
adductor longus
adductor brevis
adductor magnus
gracilis
obturator externus

29

attachments of pectinus?

origin:
superior pubic ramus

insertion:
posterior femur below lesser trochanter (pectineal line of femur)

30

action of pectineus?

adduction, flexion, assists in rotation of thigh

31

innervation of pectineus?

femoral nerve, obturator nerve, or both

accessory obturator nerve when present

32

attachments of adductor longus?

origin:
front of body of pubis

insertion:
middle portion of medial lip of linea aspera

33

action of adductor longus?

adduction, flexion, assists in rotation of thigh

34

innervation of adductor longus?

obturator nerve (anterior division)

35

attachments of adductor brevis?

origin:
inferior pubic ramus

insertion:
upper one half of medial lip of linea aspera

36

action of adductor brevis?

adduction, flexion, assists in rotation of thigh

37

innervation of adductor brevis?

obturator nerve (anteiror division)

38

attachments of adductor magnus?

origin:
ischiopubic ramus

insertion:
medial portion of femur from below lesser trochanter to adductor tubercle

39

action of adductor magnus?

entire muscle adducts thigh
proximal - adducts and flexes, assists in rotation
distal - adducts and extends, assists in rotation

40

innervation of adductor magnus?

proximal - obturator nerve (posterior division)
distal - tibial nerve

41

adductor hiatus?

gap in distal attachment of adductor magnus which provide continuity between adductor canal above and popliteal fossa below

42

attachments of gracilis?

origin:
inferior pubic ramus near symphysis

insertion:
medial surface of tibia below condyle with sartorious and semitendinosus at pes anserinus

43

action of gracilis?

adducts thigh
flexes and medially rotates leg

44

innervation of gracilis?

obturator nerve (anterior)

45

attachments of obturator externus?

origin:
outer surface of obturator membrane and outer margins of obturator foramen

insertion:
trochanteric fossa

46

action of obturator externus?

lateral rotation of thigh

47

innervation of obturator externus?

obturator nerve (posterior division)

48

what attaches at pes anserinus?

gracilis, sartorius, semitendinosus