TIBIAL NERVE
Q. 1 Nerve supply of adductor magnus is through:
| A | Tibial part of sciatic nerve | |
| B |
Obturator nerve |
|
| C |
Both |
|
| D |
None |
Q. 1
Nerve supply of adductor magnus is through:
| A |
Tibial part of sciatic nerve |
|
| B |
Obturator nerve |
|
| C |
Both |
|
| D |
None |
Ans.
C
C
D
Explanation:
Innervation of adductor magnus
- Posterior division of obturator nerve innervates most of the adductor magnus
- Vertical or hamstring portion innervated by tibial nerve (L2, L3, L4)
Q. 2 Nerve Supply of the Muscle marked as Muscle A in the diagram is
| A |
Tibial part of sciatic nerve |
|
| B |
Obturator nerve |
|
| C |
Both |
|
| D |
None |
Ans.
Explanation:
Innervation of adductor magnus
- Posterior division of obturator nerve innervates most of the adductor magnus
- Vertical or hamstring portion innervated by tibial nerve (L2, L3, L4)
Q. 3 True about popliteus are all except‑
| A |
Flexor of knee |
|
| B |
Intracapsular origin |
|
| C |
Supplied by tibial nerve |
|
| D |
Causes locking of knee |
Ans.
Explanation:
Popliteus
Popliteus is a deep muscle of posterior compartment of leg.
Features of popletius are –
Origin
- Lateral surface of lateral condyle of femur, origin is intracapsular.
- Outer margin of lateral meniscus of knee.
Insertion
- Posterior surface of shaft of tibia above soleal line.
Nerve supply
- Tibial nerve
Action
- Ulocks knee joint by lateral rotation of femur on tibia prior flexion.
- Accessory flexor of knee.
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