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Mid Unit 1 ORIGIN, INSERTIONS, ACTIONS, INNERVATIONS

Terms in this set (101)

Trendelenberg Sign
drooping of the hip on the unweighted side when in the "flamingo stance" due to deficit in the action of the gluteus medium and minimum muscles.
Myotome
muscle supplied by a specific spinal nerve
Dermatome
area of the tegmenjtum served by a specific spinal (segmental) nerve
Posterior aspect of the ilium, posterior to the posterior gluteal line, the dorsal sacrum, and posterior sacroiliac ligament, and the sacrotuberous ligament
Gluteus Maximums m. PA:
Iliotibial tract and gluteal tuberosity
Gluteus Maximus m. DA:
Extends thigh; rotates thigh laterally
Gluteus Maximus m. ACTION
inferior gluteal n.
Gluteus Maximus m. INNERVATION
Posterior surface of ilium between posterior and anterior gluteal lines
Gluteus Medius m. PA:
Superior and lateral surface of greater trochanter
Gluteus Medius m. DA:
Abducts thigh; rotates thigh medially
Gluteus Medius m. ACTION
Superior gluteal n.
Gluteus Medius m. INNERVATION
Ischial spine and sacrospinous ligament
Superior Gemellus m. PA:
Tendon of obturator interus m.
Superior Gemellus m. DA:
Rotates thigh laterally
abducts FLEXED thigh
Superior Gemellus m. ACTION
Nerve to obturator internus
Superior Gemellus m. INNERVATION
Ischial tuberosity
Inferior Gemellus m. PA:
Tendon of obturator internus
Inferior Gemellus m. DA:
Rotates thigh laterally
abducts FLEXED thigh
Inferior Gemellus m. ACTION
Nerve to quadrates femoris
Inferior Gemellus m. INNERVATION
Ischial tuberosity
Quadratus Femoris m. PA:
Intertrochanteric crest and inferior to crest
Quadratus Femoris m. DA:
Rotates thigh laterally
Quadratus Femoris m. ACTION
nerve to quadratus femoris
Quadratus Femoris m. INNERVATION
Posterior surface of ilium between anterior and inferior gluteal lines
Gluteus Minimus m. PA:
Anterior surface of greater trochanter
Gluteus Minimus m. DA:
Abducts thigh
rotates thigh medially
Gluteus Minimus m. ACTION
Superior gluteal n.
Gluteus Minimus m. INNERVATION
Pelvic surface of the sacrum and sacrotuberous ligament
Piriformis m. PA:
Medial and superior surface of greater trochanter by passing through the greater sciatic foramen
Piriformis m. DA:
Rotates thigh laterally; abducts FLEXED thigh
Piriformis m. ACTION
Branches given off from S1, 2 within the pelvis
Piriformis m. INNERVATION
Obturator membrane (overlying the obturator foramen); pelvic surface and adjacent bone (portions of the pubis and ischium)
Obturator Internus m. PA:
Trochanteric Fossa
Obturator Internus m. DA:
Rotates thigh laterally; abducts FLEXED thigh
Obturator Internus m. ACTION
Nerve to obturator internus
Obturator Internus m. INNERVATION
Long head: ischial tuberosity
Short head: lower half portion of linea aspera
Biceps Femoris m. PA:
Fibular head, lateral side
Biceps Femoris m. DA:
Long head: extend thigh
Both heads: laterally rotate leg when it is FLEXED, flex leg
Biceps Femoris m. ACTION
sciatic n.
Biceps Femoris m. INNERVATION
Ischial tuberosity
Semitendinosus m. PA:
Medial side of tibia just inferior to medial condyle
Semitendinosus m. DA:
Flexes leg
extends thigh
medially rotates leg when it is FLEXED
Semitendinosus m. ACTION
Sciatic n.
Semitendinosus m. INNERVATION
Sides of T12-L5 vertebral bodies and intervertebral disks, and the lumbar transverse processes.
Iliopsoas m. PA:
PSOAS MAJOR M.
Iliac fossa
Iliopsoas m. PA:
ILIACUS M.
Lesser trochanter of the femur
Iliopsoas m. DA:
L 2, 3, 4 ventral rami
Iliopsoas m. INNERVATION
PSOAS MAJOR M.
Femoral n.
Iliopsoas m. INNERVATION
ILIACUS M.
Anterior inferior iliac spine; ilium superior to acetabulum
Rectus femoris m. PA:
Tibial tuberosity via patellar ligament
Rectus femoris m. DA:
Extends leg (and weak flexor of the thigh)
Rectus femoris m. ACTION
Femoral n.
Rectus femoris m. INNERVATION
Inferior portion of the greater trochanter and lateral lip of lines aspera
Vastus lateralis m. PA:
Tibial tuberosity via patellar
Vastus lateralis m. DA:
Extends leg
Vastus lateralis m. ACTION
Femoral n.
Vastus lateralis m. INNERVATION
Upper 1/2 or more of femur; anterior and lateral surface
Vastus intermedius m. PA:
Tibial tuberosity via patellar ligament
Vastus intermedius m. DA:
Extends leg
Vastus intermedius m. ACTION
Femoral n.
Vastus intermedius m. INNERVATION
Intertrochanteric line and medial lip of lines aspera
Vastus medialis m. PA:
Tibial tuberosity via patellar ligament
Vastus medialis m. DA:
Extends leg
Vastus medialis m. ACTION
Femoral n.
Vastus medialis m. INNERVATION
Anterior part of iliac crest to anterior superior iliac spine
Tensor fasciae latte m. PA:
Iliotibial tract
Tensor fasciae latte m. DA:
Flexes thigh
medially rotates thigh
abducts thigh
helps stabilize extension at the knee joint
Tensor fasciae latte m. ACTION
Superior gluteal n.
Tensor fasciae latte m. INNERVATION
Anterior superior iliac spine
Sartorius m. PA:
Superior part of body of the tibia; medial side
Sartorius m. DA:
Flexes abducts
laterally rotates thigh
flexes leg
Sartorius m. ACTION
Femoral n.
Sartorius m. INNERVATION
Pubis; body and inferior ramus
Gracilis m. PA:
Medial surface of the tibia below medial condyle (between attachments of sartorial and semitendinosus)
Gracilis m. DA:
Adducts the thigh
medially rotates thigh
(weak flexor of thigh if leg is extended)
flexes leg
medially rotates FLEXED leg
Gracilis m. ACTION
Obturator n.
Gracilis m. INNERVATION
ischiopubic ramus
Adductor Magnus m. PA:
ADDUCTOR PART
Ischial tuberosity
Adductor Magnus m. PA:
HAMSTRING PART
Immediately below insertion of quadratus femoris and length of linea aspera
Adductor Magnus m. DA:
ADDUCTOR PART
Adductor tubercle (at upper border of medial epicondyle)
Adductor Magnus m. DA:
HAMSTRING PART
Adducts thigh (weak flexor of thigh)
Adductor Magnus m. ACTION
ADDUCTOR PART
Adducts thigh and extends thigh
Adductor Magnus m. ACTION
HAMSTRING PART
Obturator n.
Adductor Magnus m. INNERVATION
ADDUCTOR PART
Sciatic n. (tibial portion)
Adductor Magnus m. INNERVATION
HAMSTRING PART
Pubic crest and body
Adductor Longus PA:
Middle 1/3 of linea aspera
Adductor Longus DA:
Adducts thigh (weak flexor of thigh)
Adductor Longus ACTION
Obturator n.
Adductor Longus INNERVATION
Superior ramus of pubis
Pectineus m. PA:
Pectineal line of femur
Pectineus m. DA:
Flexes thigh
adducts thigh
medially rotates of thigh
Pectineus m. ACTION
Femoral n. and/or obturator n.
Pectineus m. INNERVATION
Inferior ramps and body of pubic bone
Adductor Brevis m. PA:
Upper 1/3 of linea aspera
Adductor Brevis m. DA:
Adducts thigh (weak flexor of thigh)
Adductor Brevis m. ACTION
Obturator n.
Adductor Brevis m. INNERVATION
External surface of obturator membrane and surrounding bone
Obturator Externus m. PA:
Trochanteric fossa
Obturator Externus m. DA:
Laterally rotates thigh
Obturator Externus m. ACTION
Obturator n.
Obturator Externus m. INNERVATION
Pifiromis m.
Obturator Internus m.
Superior Gemellus m.
Inferior Gemellus m.
What muscles abduct FLEXED THIGH; and rotate THIGH laterally?
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