All are composite muscles except
A. Pectirieus
B. Flexor Carpi ulnaris
C. Biceps femoris
D. Flexor digitorum profundus
Ans.
B. Flexor carpi ulnaris
Explanation:
*Flexor carpi ulnaris b. is supplied by a single nerve and is not a
composite/hybrid muscle.
Composite muscles have more than one set of fibres and are supplied usually by
different nerves for different set of fibres.
*Pectineus a. has anterior set of
fibres supplied by the femoral nerve, whereas, peri set of fibres are supplied
by the obturator nerve.
*Long head of biceps femoris c. is
supplied by the tibial part of sciatic nerve, and the short head is supplied by
the common peroneal nerve. This reflects the composite derivation from the
flexor extensor musculature.
Radial half of flexor digitorum profundus d.
is supplied by the median nerve and the ulnar half is supplied by
the ulnar nerve.
