Composite or hybrid muscles are those muscles which have more than one set of fibers but perform the same function and are usually supplied by different nerves for different set of fibers.

Examples

Brachialis The brachialis (brachialis anticus), also known as the Teichmann muscle, is a muscle in the upper arm that flexes the elbow. It lies deeper than the biceps brachii, and makes up part of the floor of the region known as the cubital fossa (elbow ...

: Musculocutaneous nerve is motor and radial nerve is proprioceptive. *

Adductor magnus Adductor may refer to: * One of the anatomical terms of motion * Adductor muscle (disambiguation) * Adductor canal The adductor canal, also known as the subsartorial canal or Hunter’s canal, is an aponeurotic tunnel in the middle third of the th ...

: Its adductor part by posterior division of obturator nerve and hamstring part by tibial part of sciatic nerve. *

Biceps femoris The biceps femoris () is a muscle of the thigh located to the posterior, or back. As its name implies, it has two parts, one of which (the long head) forms part of the hamstrings muscle group. Structure It has two heads of origin: *the ''long h ...

: Its long head is supplied by the tibial part of sciatic nerve, whereas the short head is supplied by the common peroneal nerve. This reflects the composite derivation from the flexor and extensor musculature. *

Pectineus The pectineus muscle (, from the Latin word ''pecten'', meaning comb) is a flat, quadrangular muscle, situated at the anterior (front) part of the upper and medial (inner) aspect of the thigh. The pectineus muscle is the most anterior adductor o ...

: Its anterior set of fibers are supplied by the femoral nerve, whereas posterior set of fibers are supplied by the obturator nerve. *

Flexor digitorum profundus The flexor digitorum profundus is a muscle in the forearm of humans that flexes the fingers (also known as digits). It is considered an extrinsic hand muscle because it acts on the hand while its muscle belly is located in the forearm. Together t ...

: Its radial half of is supplied by the median nerve and the ulnar half is supplied by the ulnar nerve. * Flexor policis brevis: Supplied by recurrent branch of the median nerve and the deep branch of the ulnar nerve *

Iliopsoas The iliopsoas muscle (; from lat, ile, lit=groin and grc, ψόᾱ, psóā, muscles of the loins) refers to the joined psoas major and the iliacus muscles. The two muscles are separate in the abdomen, but usually merge in the thigh. They are usua ...

:Supplied by spiral nerve and femoral nerve * The tongue is a composite muscle made up of various components like longitudinal, transverse, horizontal muscles with different parts innervated having different nerve supply. *

Digastric muscle The digastric muscle (also digastricus) (named ''digastric'' as it has two 'bellies') is a small muscle located under the jaw. The term "digastric muscle" refers to this specific muscle. However, other muscles that have two separate muscle bellie ...

: Its anterior belly is supplied by nerve to mylohyoid (a branch of trigeminal nerve). The posterior belly is supplied by the facial nerve. *

Pectoralis major The pectoralis major () is a thick, fan-shaped or triangular convergent muscle, situated at the chest of the human body. It makes up the bulk of the chest muscles and lies under the breast. Beneath the pectoralis major is the pectoralis minor, a ...

: supplied by medial and lateral pectoral nerves.

Commonly confused

Certain muscles are commonly confused with composite muscles which they are not. Examples are: * Rectus femoris * Omohyoid * Occipitofrontalis * Ligament of Trietz

References

* Cunningham's textbook of anatomy (old edition) {{muscular system Muscular system Somatic motor system