Lab 4 - Anterior Hip & Lower Limb

Question 1

Sartorius

Answer 1

action
Hip: flexion, lateral rotation
Knee: flexion

innervation
Femoral nerve

proximal attachment
Pelvis (anterior superior iliac spine)

distal attachment
Tibia (proximal shaft)

Question 2

Rectus femoris

Answer 2

action
Hip: flexion
Knee: extension

innervation
Femoral nerve

proximal attachment
Pelvis (anterior inferior iliac spine)

distal attachment
Tibia (tuberosity) via the quadriceps tendon and patellar ligament

Question 3

Vastus lateralis

Answer 3

action
Knee: extension

innervation
Femoral nerve

proximal attachment
Femur (lateral shaft)

distal attachment
Tibia (tuberosity) via the quadriceps tendon and patellar ligament

Question 4

Vastus intermedius

Answer 4

action
Knee: extension

innervation
Femoral nerve

proximal attachment
Femur (anterior shaft)

distal attachment
Tibia (tuberosity) via the quadriceps tendon and patellar ligament

Question 5

Vastus medialis

Answer 5

action
Knee: extension

innervation
Femoral artery

proximal attachment
Femur (medial shaft)

distal attachment
Tibia (tuberosity) via the quadriceps tendon and patellar ligament

Question 6

Iliopsoas – Psoas major

Answer 6

action
Lumbar intervertebral joint: flexion
Hip: flexion

innervation
Lumbar ventral rami(L1, L2, L3) andfemoral

proximal attachment
Lumbar vertebrae and intervertebral discs

distal attachment
Femur (lesser trochanter)

Question 7

Iliopsoas – Iliacus

Answer 7

action
Hip: flexion

innervation
Femoral nerve

proximal attachment
Pelvis ( iliac fossa)

distal attachment
Femur (lesser trochanter)

Question 8

Pectineus

Answer 8

action
Hip: flexion and adduction

innervation
Femoral nerve

proximal attachment
Pubis (superior ramus)

distal attachment
Femur (pectineal line)

Question 9

Gracilis

Answer 9

action
Hip: adduction
Knee: flexion

innervation
Obturator nerve

proximal attachment
Pubis (body and ischiopubic ramus)

distal attachment
Tibia (proximal shaft)

Question 10

Adductor longus

Answer 10

action
Hip: adduction

innervation
Obturator nerve

proximal attachment
Pubis (body)

distal attachment
Femur (linea aspera)

Question 11

Adductor brevis

Answer 11

action
Hip: adduction

innervation
Obturator nerve

proximal attachment
Pubis (body) and ischiopubic ramus

distal attachment
Femur (linea aspera)

Question 12

Adductor magnus

Answer 12

action
Hip: adduction

innervation
Obturator nerve

proximal attachment
Ischium (ischial tuberosity) and ischiopubic ramus

distal attachment
Femur (linea aspera and adductor tubercle)

Question 13

Obturator externus

Answer 13

action
Hip: adduction and lateral rotation

innervation
Obturator nerve

proximal attachment
Pelvis (obturator foramen and obturator membrane)

distal attachment
Femur (trochanteric fossa)

Question 14

Tibialis anterior

Answer 14

action
Ankle: dorsiflexion
Intersal: inversion

innervation
Deep fibular nerve

proximal attachment
Tibia (proximal shaft)
Interosseous membrane

distal attachment
Tarsus (medial cuneiform)
Digit 1 metatarsal (base)

Question 15

Extensor hallucis longus

Answer 15

**action**
 Ankle: dorsiflexion
 Digit 1 (big toe) MCP, PIP joints: extension

innervation
Deep fibular nerve

proximal attachment
Fibula (middle shaft)
Interosseous membrane

distal attachment
Digit 1 distal phalanx

Question 16

Extensor digitorum longus

Answer 16

action
Ankle: dorsiflexion
Digits 2‐5 MCP, PIP, DIP joints: extension

innervation
Deep fibular nerve

proximal attachment
Fibula (head and proximal shaft)
Tibia (lateral condyle)

distal attachment
Digits 2‐5 middle and distal phalanges

Question 17

Fibularis tertius

Answer 17

action
Ankle: dorsiflexion
Intersal: eversion

innervation
Deep fibular nerve

proximal attachment
Fibula (distal shaft)

distal attachment
Digit 5 metatarsal