9. Adduction of the 3rd digit at the metacarpophaliangeal joint is produced by A
ID: 3513756 • Letter: 9
Question
9. Adduction of the 3rd digit at the metacarpophaliangeal joint is produced by A. lumbricales B. dorsal interossel C. paimar interossei D. hypothenar muscles E. none of these 10. Which of the following is NOT innervated by the musculocutaneous nerve? A biceps brachi B. brachialis C. brachioradialis E. more than one of these 11. Veins differ from arteries in that they have A. thinner walls u 8. valves to ensure one-way flow C. morosmooth musclo A and B D. E. A, B, and C 12. Which of the following is NOT a superficial vein? A esser saphenous vein B. cephaic vein C. brachiocephaic vein D. baslic vein E. none of the above (hey ALL are superficial veins) 13. which of the tcocing he inuina caa contains the gonadal arery in males B. contains the gonidal artery in females G. contains the spermatic cord in maies D. contains the round ligament in Semakes E. none of the above (hey ane ALL ru statements) anerior leg with her knee fuly extended. Which ligament is susceptble 4. A soccer player suters impact to the to damage? D. E. none of 5. hat hip motione would be weakened tolliowing damage to the obturator nerve? D adduction E. more than one of these 16. Which of the following is NOT found in the lateral compartment of the leg? B. doep Sbular nerve D. tbular vein E. none of hese (they are all located there) 17. The 53 spinal sagnent contrieutes to the innervation of the short head of the biceps femoris A True B. FaseExplanation / Answer
9. ans : C) Palmar Interossei
Explanation: Only palmar interossei muscle adducts fingers at metacarpophalangeal joints, all other muscle like lumbricals ( flexes digits at metacarpoplalangeal joint), dorsal interossei ( abducts fingers ) and in case of thumb, adductor pollicis brevis play role in digit adduction.
10. ans: B) Brachioradialis
Though brachioradialis is seen from anterior surface of forearm it is a muscle of pposterior compartment of hand, innervated by radial muscle, so named brachioradialis.
11. ans: B) A ( hinner wall )& B ( valves to ensure one way flow)
Veins are thinner than artery as they have thinner muscularis layer than artery. Veins have valve to ensure one way flow towards the vena cava.
12. ans : C) brachiocephalic vein
Right and left brachiocephalic vein combines to for superior vena cava, so both brachiocephalic veins are deep veins. Whereas cephalic vein can be accessed in lateral aspect anterior surface of forearm for venous access, basilic vein can be accessed in the medial aspect of forearm for IV line, lesser saphenous vein can be accessed in the lateral aspect of leg.
13. Ans: B) gonadal artery in females
Explanation: in females ovarian artery is known as gonadal artery, as you know ovaries are situated in abdomen, so it is obvious that ovarian artery does not pass through inguinal canal.
14. ans: C) anterior cruciate ligament
As anterior cruciate ligament is inserted into the anterior aspect of tibia, any impact injury from front of the leg will cause injury to anterior cruciate ligament commonly than other ligament.
15. ans : C) External rotation of hip
Obturator nerve supplies the external obturator muscle which is a external rotator of hip joint, so in injury of obturator nerve, external rotation of hip will be affected. { other muscle supplied by obturator nrves are adductor longus, adductor brevis, adductor magnus, gracilis}.
16. ans : B) Deep fibular (peroneal) nerve
Deep fibular nerve passes through anterior compartment of leg not lateral compartment of leg, it originates at bifurcation of common peroneal nerve and then go along the lateral border of anterior aspect of tibia.
17. ans : B) False
Biceps femoris is a composite muscle it has two heads. short head is supplied by common peroneal nerve of sciatic nerve [ root value L5, S2], and long head by tibial branch of sciatic nerve [ root value L5, S1 ,S2], so it is not supplied by S3 at all.
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