Final PBA

Question 1

Sartorius

Answer 1

O: ASIS and superior 1/2 of the notch just distal to the spine.
I: Pes anserine
A: Flexes, laterally rotates and abducts the hip joint; assists in medial rotation of knee.
N: Femoral nerve

Question 2

Rectus Femoris

Answer 2

O: AIIS, Groove above rim of acetabulum
I: Tibial Tuberosity with patellar ligament
A: Extension of knee and flexion of the hip
N: Femoral Nerve

Question 3

Vastus Lateralis

Answer 3

O: Proximal part of intertrochanteric line, anterior/inferior border of greater trochanter, gluteal tuberosity and proximal 1/2 of lateral lip of the linea aspera.
I: Tibial tuberosity with patellar ligament
A: Knee Extension
N: Femoral Nerve

Question 4

Vastus Medialis

Answer 4

O: Distal 1/2 of intertrochanteric line, medial lip of linea aspera, proximal part of medial supracondylar line.
I: Tibial Tuberosity with patellar ligament, proximal anteriomedial surface of medial supracondylar line.
A: Knee Extension
N: Femoral Nerve

Question 5

Adductor Longus

Answer 5

O: Anterior surface of pubis at the junction of crest and symphysis
I: Middle 1/3 of the medial lip of the linea aspera
A: Adduction flexion of hip and may assist in flexion.
N: Obturator nerve

Question 6

Adductor Magnus

Answer 6

O: Inferior pubic ramus, ischial ramus and tuberosity
I: Middle of the linea aspera, medial supracondylar line and adductor tubercle
A: Adduction and extension may assist in flexion
N: Obturator and sciatic nerve.

Question 7

Gracilis

Answer 7

O: Inferior 1/2 of the pubic symphysis and medial margin of inferior ramus
I: Pes Anserine
A: Adduction, flexion and medial rotation of the knee.
N: Obturator Nerve

Question 8

Biceps Femoris

Answer 8

O: Posterior part of ischial tuberosity and lateral lip of linea aspera, proximal 2/3 of supracondylar line
I: Lateral side of the fibula head and lateral condyle of the tibia
A: Flexes, laterally rotates
N: Tibial and peroneal branch of sciatic nerve

Question 9

Semitendinosus

Answer 9

O: Ischial tuberosity with tendon for long head of biceps femoris
I: Pes Anserine
A: Flexes, medially rotates knee joint, assists in medial rotation of the hip.
N: Tibial branch of sciatic nerve

Question 10

Tibialis Anterior

Answer 10

O: Lateral condyle and proximal 1/2 of lateral surface of tibia and interosseous membrane
I: Medial and plantar surface of medial cuneiform bone and base of first metatarsal
A: Dorsiflexes and inverts ankle/foot
N: Deep peroneal nerve

Question 11

Extensor Digitorum Longus

Answer 11

O: Lateral condyle of tibia and proximal 3/4 of fibula anterior surface
I: Dorsal surface of digits 2-5 distal phalanges
A: Extension of digits 2-5 MTP and IP joints, Assists in dorsiflexion and eversion of ankle
N: Deep peroneal nerve

Question 12

Fibularis (Peroneus) Longus

Answer 12

O: Lateral condyle of tibia and proximal 2/3 of lateral surface of fibula
I: Lateral side of the base of first metatarsal and medial cuneiform
A: Everts foot assists in plantar flexion and depresses head of first metatarsal
N: Superficial peroneal nerve

Question 13

Soleus

Answer 13

O: posterior surfaces of head of fibula and proximal 1/3 of its body, soleal line and middle 1/3 of tibia medial border
I: With achilles tendon onto posterior surface of calcaneus
A: Plantar flexion and weak inversion of foot
N: Tibial Nerve

Question 14

Flexor Digitorum Longus

Answer 14

O: Middle 3/5 of posterior surface of body of tibia
I: base of distal phalanges of 2-5th digits
A: Flexes IP and MTP joints of digits 2-5; assists with plantar flexion and inversion of the foot
N: Tibial nerve

Question 15

Abductor Hallucis

Answer 15

O: Medial process of the tuberosity of the calcaneus
I: base of proximal phalanx of digit 1; may extend to distal phalanx
A: Abducts and assists on flexion of MTP joint of digit 1
N: Medial Plantar nerve

Question 16

Anterior Scalene

Answer 16

O: TVP’s of C3-C7; anterior tubercles
I: Scalene tubercle and cranial crest of 1st rib
A: Elevation of 1st rib; contralateral rotation of neck
N: Cervical Spinal, ventral rami

Question 17

Gluteus Maxiumus

Answer 17

O: ilium and portion of superior, posterior iliac crest, lower part of sacrum and side of coccyx
I: IT Band of fascia latae and gluteal tuberosity
A: Extension, lateral rotation and may assist in Ab/Adduction of hip.
N: Inferior Gluteal Nerve

Question 18

Gluteus Medius

Answer 18

O: External surface of ilium between iliac crest and posterior gluteal line
I: Oblique ridge on lateral surface of greater trochanter
A: Abduction of hip and medial rotation; may assist in extension of hip joint
N: Superior Gluteal nerve

Question 19

Gluteus Minimus

Answer 19

O: Ilium between anterior and inferior gluteal lines; margin of greater sciatic notch
I: anterior border of greater trochanter and hip joint capsule
A: Abducts and medially rotates; may assist in flexio of hip
N: Superior gluteal nerve

Question 20

Piriformis

Answer 20

O: Sacrum clost to S1-S4, margin of greater sciatic foramen, sacrotuberous ligament
I: Superior border of greater trochanter
A: Lateral Rotation of hip and abduction of hip when thigh is flexed.
N: Sacral Plexus

Question 21

Psoas Major

Answer 21

O: TVP’s of L1 - L5; Ventral surface
I: Lesser trochanter of femur
A: Flexes and lateral rotation of hip; flexion and lateral flexion of spinal joints; anterior pelvic tilt
N: Lumbar plexus

Question 22

Rhomboid Major

Answer 22

O: SP’s of T2-T5
I: Fibrous attachment to medial border o the scapula between the spine and inferior angle
A: Adducts and elevates the scapula, some rotation of glenoid cavity caudally of downward
N: Dorsal Scapular Nerve

Question 23

Spinalis Cervicis

Answer 23

O: SP’s of T2 - T5
I: SP of C2
A: Extension of Vertebral Column
N: Spnal nerve; Dorsal Rami