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VCU Anatomy Test 2 > Thigh > Flashcards

Flashcards in Thigh Deck (26):
1

Thigh is the region between the hip and knee containing the __ and___.

femur
patella

2

Sesamoid bone within the quadricep tendon.

patella

3

Thigh is covered by dense connective tissue called ________.

fascia lata

4

Thigh is divided into three compartments _________, _________, and _________. These are divided by intermuscular septa that arise from the fascia lata.

anterior
medial
posterior

5

The anterior compartment is separated from the posterior compartment by the ____ _____ ______.

lateral intermuscular system

6

The anterior compartment is separated from the medial compartment by the ___ ____ ____.

medial intermuscular system

7

Quadriceps Femoris: 4 muscles

1. rectus femoris
2. vastus lateralis
3. vastus medialis
4. vastus intermedius

8

rectus femoris:
origin -
insertion -
innervation -
function -

origin - AIIS

insertion - patella via quadricep tendon, continuing to tibial tuberosity via patellar ligament

innervation - femoral n.

function - 1. extend leg at knee
2. flexes thigh

9

vastus lateralis:
origin -
insertion -
innervation -
function -

origin - greater trochanter

insertion - patella via quadricep tendon, continuing to tibial tuberosity via patellar ligament

innervation - femoral n.

function - extends leg at knee

10

vastus medialis:
origin -
insertion -
innervation -
function -

origin -intertrochanteric line, medial lip of linea aspera

insertion - patella via quadricep tendon, continuing to tibial tuberosity via patellar ligament, patella and tibia via medial patellar retinacululm

innervation - femoral n.

function - extends leg at knee

11

vastus intermedius:
origin -
insertion -
innervation -
function -

origin - anterior & lateral shaft of femur

insertion - patella via quadricep tendon, continuing to tibial tuberosity via patellar ligament

innervation - femoral n.

function - extends leg at knee

12

sartorius:
origin -
insertion -
innervation -
function -

origin - ASIS

insertion - anteromedial surface of proximal tibia, contributes to pes anserinus tendon

innervation - femoral n.

function - 1. flexes thigh
2. externally rotates thigh
3. ABducts thigh
4. flexes knee
5. weakly internally rotates knee

13

pectineus:
origin -
insertion -
innervation -
function -

origin - superior ramus of pubis (pectineal line of pubis)

insertion - pectineal line of femur, interior to lesser trochanter of femur

innervation - femoral n.

function - 1. ADducts thigh
2. flexes thigh
3. internally rotates thigh

14

tensor fascia lata:
*often considered a gluteal m..
origin -
insertion -
innervation -
function -

origin - ASIS, anterior part of iliac crest

insertion - patella via quadricep tendon, continuing to tibial tuberosity via patellar ligament

innervation - superior gluteal nerve n.

function - 1. ABducts thigh
2. internally rotates thigh
3. flexes thigh

15

iliopsoas:
3 compartments

1. psoas major
2. iliacus
3. psoas minor

16

psoas major:
origin -
insertion -
innervation -
function -

origin - sides & transverse processes of T12 & L vertebrae & associated intervertebral discs

insertion - lesser trochanter of femur

innervation - anterior rami of lumbar n.

function - acts with iliacus, flexes unfixed thigh, may initiate trunk flexion (sit ups), acts as postural stabilizer, helps maintain lumbar lordosis

17

iliacus:
origin -
insertion -
innervation -
function -

origin - iliac fossa

insertion - lesser trochanter of femur

innervation - femoral n.

function - acts with psoas major, flexes unfixed thigh, may initiate trunk flexion (sit ups), acts as postural stabilizer

18

ADdcuctor longus:
origin -
insertion -
innervation -
function -

origin - body of pubis
insertion - linea aspera (middle 1/3)
innervation - obturator n.
function - ADducts thigh

19

ADductor brevis:
origin -
insertion -
innervation -
function -

origin - body and inferior ramus of pubis
insertion - pectineal line of femur and proximal part of linea apera
innervation - obturator n.
function - ADducts thigh

20

ADductor magnus:
HAMSTRING PART
origin -
insertion -
innervation -
function -

HAMSTRING PART
origin - ischial tuberosity
insertion - adductor tubercle
innervation - tibial part of sciatic n.
function - weakly extends thigh

21

Gracilis:
origin -
insertion -
innervation -
function -

origin - body & inferior ramus of pubis
insertion - medial surface of proximal tibia btwn insertions of sartorius & semitendinous; contributes to pes anserinus tendon
innervation - obturator nerve
function - 1. ADducts thigh
2. flexes knee
3. weakly internally rotates leg at knee

22

Obturator Externus:
deep to pectineus
origin -
insertion -
innervation -
function -

origin - external surface of obturator foramen & membrane
insertion - passes posterior to neck of femur & attaches to the trochanteric fossa
innervation - obturator n.
function - 1. external rotation of thigh
2. steadies head of femur in acetabulum

23

ADductor magnus:
ADDUCTOR PART
origin -
insertion -
innervation -
function -

ADductor magnus:
ADDUCTOR PART
origin - inferior ramus of pubis, ramus of ischium
insertion - gluteal tuberosity, linea aspera, medial supracondylar line
innervation - obturator nerve
function - 1. ADducts thigh
2. weakly flexes thigh

24

Blood supply to medial compartment

1. femoral a.
2. perforating branches of deep femoral a.
3. obturator a. (branch of internal iliac a.)

25

The fascial tunnel running from the apex of the femoral triangle to the adductor hiatus (in tendon of adductor magnus)

adductor canal

26

Boundaries of adductor canal

1. posterior: adductor longus & magnus
2. medial (roof): sartorius
3. anterolateral: vastus medialis