Midterm MSAK

Question 1

adductor longus (O,I)

Answer 1

O: anterior body of the pubis

I: middle 1/3 of the medial lip of the linea aspera of the femur

Question 2

adductor longus (a,n)

Answer 2

A: ADD, flexes, and IR the thigh at the hip joint
(RMA: anteriorly tilts pelvis at the hip joint)

N: obturator n

Question 3

adductor magnus (o,i)

Answer 3

O: pubis and ischium

• Inferior pubic ramus and ramus of ischium (AH)
• Ischial tuberosity (PH)

I: linea aspera of the femur

• Gluteal tuberosity, linea aspera and medial supracondylar line of femur(AH)
• Adductor tubercle of the femur (PH)

Question 4

adductor magnus (a,n)

Answer 4

A: adducts and extends the thigh at the hip joint
(RMA: posteriorly tilts the pelvis at the hip joint)

N: obturator (AH) and sciatic (PH) n

Question 5

gluteus medius (o,i)

Answer 5

O: inferior to iliac crest and between the anterior and posterior gluteal lines

I: lateral surface of greater trochanter of femur

Question 6

gluteus medius (a,n)

Answer 6

A: ABD, extends, flexes, ER and IR thigh at the hip joint
(RMA: depresses same-side, posteriorly tilts, anteriorly tilts and contralaterally rotates the pelvis at the hip joints)

N: superior gluteal n

Question 7

gluteus maximus (o,i)

Answer 7

O: posterior iliac crest, posterolateral sacrum, coccyx and sacrotuberous ligament, thoracolumbar fascia, and fascia over gluteus max

I: ITB and gluteal tuberosity of femur

Question 8

gluteus maximus (a,n)

Answer 8

A: extends, ER, ABD (upper 1/3) and ADD (lower 2/3) thigh at hip joint

N: inferior gluteal n

Question 9

piriformis (o,i)

Answer 9

O: anterior surface of the sacrotuberous ligament (anterior sacrum)

I: superomedial surface of the greater trochanter of the femur

Question 10

piriformis (a,n)

Answer 10

A: ER, horizontally extends ( ABD) and IR the thigh at the hip joint

N: nerve to piriformis

Question 11

semimembranous (o,i)

Answer 11

O: ischial tuberosity

I: posterior surface of the medial condyle of the tibia

Question 12

semimembranosus (a,n)

Answer 12

a: flexes and IR leg at knee joint; extends, IR and ADD thigh at hip joint
(RMA: post tilt pelvis at hip)

n: sciatic n

Question 13

semitendinosus (o,i)

Answer 13

o: ischial tuberosity
i: pes anserine tendon (prox anteromedial tibia)

Question 14

semitendinosus (a,n)

Answer 14

A: flexes and IR leg at knee joint; extends, IR and ADD the thigh at the hip joint
(RMA: post pelvic tilt)

N: sciatic n.

Question 15

biceps femoris (o,i)

Answer 15

O: ischial tuberosity and sacrotuberous ligaments (LH); linea aspera and lateral supracondylar line of femur (SH)

i: head of fibula and lateral tibial condyle

Question 16

biceps femoris (a,n)

Answer 16

A: flexes and ER leg at the knee joint; flexes, ER and ADD thigh at hip joint
(RMA: post pelvis tilt)

n: sciatic n.

Question 17

psoas (o,i)

Answer 17

o: anterolaterally on bodies of t12-L5 and their intervertebral discs and anteriorly on the TVP’s of L1-L5
i: lesser trochanter of the femur

Question 18

psoas (a,n)

Answer 18

a: flexes and ER tight at hip joint; post pelvic tilt at LS joint, elevates same side pelvis at LS joints
(RMA: flexes trunk, ant tilt pelvis at hip joint, and lat flexes trunk)

n: lumbar plexus

Question 19

iliacus (o,i)

Answer 19

O: upper 2/3 of the iliac fossa and anterior inferior AIIS and sacral ala

I: lesser trochanter of femur

Question 20

iliacus (a,n)

Answer 20

A: flexes and laterally rotates thigh at the spinal joint
(RMA: ANT pelvic tilt)

N: femoral n

Question 21

TFL (o,i)

Answer 21

O: ASIS and anterior iliac crest
I: 1/3 down the thigh at the ITB

Question 22

TFL (a,n)

Answer 22

A: flexes, ABD and IR thigh at hip joint

N: superior gluteal artery

Question 23

rectus abdominus (o,i)

Answer 23

O: crest and symphysis of pubis

I: xiphoid process and cartilage of ribs 5-7

Question 24

rectus abdominus (a,n)

Answer 24

a: flexes and laterally flexes trunk at spinal joints
(RMA: post pelvic tilt)

n: intercostal nerves (ventral rami T5-T12)

Question 25

external obliques (o,i)

Answer 25

O: anterior iliac crest, pubic bone, abdominal aponeurosis, pubic crest and tubercle

I: inferior boarder of ribs 5-12

Question 26

external obliques (a,n)

Answer 26

a: flexes, laterally flexes and CONTRALATERALLY rotates trunk at spinal joints
n: intercostal n.

Question 27

internal obliques (o,i)

Answer 27

O: lateral 2/3 of inguinal ligament, iliac crest, and thoracolumbar fascia

I: ribs 10-12 and abdominal aponeurosis

Question 28

internal obliques (a,n)

Answer 28

a: flexes, laterally flexes and IPSILATERALLY rotates the trunk at the spinal joints
n: intercostal n.