IntrinsicFirst, second, and third muscle layers, and the dorsal and plantar interossei
The intrinsic muscles in the sole are grouped in four layers:
In the first layer, flexor digitorum brevis is the large central muscle located immediately below the plantar aponeurosis. It flexes the second to fifth toes and is flanked by abductor hallucis and abductor digiti minimi.
In the second layer, the quadratus plantae, located below flexor digitorum brevis, inserts into the tendon of flexor digitorum longus on which the lumbricals originates.
In the third layer, the oblique head of adductor hallucis joins the muscle's transversal head on the lateral side of the big toe. Medially to adductor hallucis are the two heads of flexor hallucis brevis, below the tendon of flexor hallucis longus. The considerably smaller flexor digiti minimi brevis on the lateral side can be mistaken for one of the interossei.
In the fourth layer. the dorsal and plantar interossei are located between and below the metatarsal bones and act as antagonists.
The central compartment is shared by the lumbricals, quadratus plantae, flexor digitorum brevis, and adductor hallucis; the medial compartment by abductor hallucis, flexor hallucis brevis, abductor digiti minimi, flexor digiti minimi brevis, and opponens digiti minimi (often considered part of the former muscle); whilst the lateral compartment is occupied by extensor digitorum brevis and extensor hallucis brevis.
Other articles related to "intrinsic":
... The intrinsic matrix containing 5 intrinsic parameters ... Nonlinear intrinsic parameters such as lens distortion are also important although they cannot be included in the linear camera model described by the intrinsic parameter matrix ... Many modern camera calibration algorithms estimate these intrinsic parameters as well ...
... An intrinsic property is an essential or inherent property of a system or of a material itself or within ... Intrinsic properties are dependent mainly on the chemical composition or structure of the material ... For example, density is a physical intrinsic property of any physical object, whereas weight is an extrinsic property that varies depending on the ...
... which structure a given lipid forms is its shape (i.e.- its intrinsic curvature) ... Intrinsic curvature is defined by the ratio of the diameter of the head group to that of the tail group ... For two-tailed PC lipids, this ratio is nearly one so the intrinsic curvature is nearly zero ...
... During the early years of the American republic, there was a general consensus that the intrinsic bullion value of the new nation's coinage should be approximately equal to its face value ... Such a weight, needed to maintain intrinsic value, would have been too heavy for practical everyday use ... made of an alloy that was primarily copper, but which consisted of enough silver to generate an intrinsic value of one cent with a reasonable coin size ...
... Further information Intrinsic value (ethics)#Life stances and intrinsic value Different life stances differ in what they hold as intrinsic values and purposes in life ... What is held as intrinsic value and purpose may differ substantially between individuals regarding themselves as belonging to the same life stance ...
Famous quotes containing the word intrinsic:
“Wherever there are walls I shall inscribe this eternal accusation against Christianity upon themI can write in letters which make even the blind see ... I call Christianity the one great curse, the one great intrinsic depravity, the one great instinct for revenge for which no expedient is sufficiently poisonous, secret, subterranean, pettyI call it the one immortal blemish of mankind....”
—Friedrich Nietzsche (18441900)
“It is not in our drawing-rooms that we should look to judge of the intrinsic worth of any style of dress. The street-car is a truer crucible of its inherent value.”
—Elizabeth Stuart Phelps (18441911)
“The truth is that literature, particularly fiction, is not the pure medium we sometimes assume it to be. Response to it is affected by things other than its own intrinsic quality; by a curiosity or lack of it about the people it deals with, their outlook, their way of life.”
—Vance Palmer (18851959)