Defn: One of the bones of either the metacarpus or metatarsus.
Defn: One of the digital bones of the hand or foot, beyond the metacarpus or metatarsus; an internode.
In Palamedea and some other birds the metacarpus bears a bony outgrowth, which when sheathed in horn forms a spur.
The most prominent part of the carpo-metacarpus is formed by the =second metacarpal= (fig.
A single spur occurs on the metacarpus in Megapodius, in Palamedea, in Parra jacana and in Hoplopterus spinosus, the Spur-winged plover.
It is somewhat remarkable how often this occurred when the short hard bones of the metacarpus were struck.
The injuries to the metatarsus corresponded so nearly to those already spoken of in the case of the metacarpus that they need no further mention.
The manner in which the third (large) metacarpus is fractured, largely determines the outcome in any given case.
The forearm is flexed on the arm by the contraction of the coracoradialis (biceps brachii), while the metacarpus and phalanges are bent by the action of the posterior antibrachial muscles.
Sagital Section of Digit and Distal Part of Metacarpus 59 Fig.
Common examples are in fractures of the metacarpus and metatarsus of the first phalanx.
In simple fracture, the metacarpus is covered with enough cotton to pad the parts, and this is retained in position by bandages.
In that type the head appears to have been about 3 or 4 feet long, and the wing finger exceeded 5 feet; while the length of the fore-arm and metacarpus exceeded 3 feet.
This position of themetacarpus is a remarkable difference from Birds, because when the bird's wing is at rest it is folded into three portions.
So that the metacarpus in the Pterodactyle differs from birds in being in the same line as the bones of the fore-arm, whereas in birds it is in the same line with the digit bones of the hand.
This condition is well seen in Professor Marsh's specimen of Rhamphorhynchus, which has the wing membrane preserved, in which all bones of the fore-arm metacarpus and wing finger are extended in a continuous curve.
The extremity of the metacarpus was applied to the ground.
But the fore-arm and metacarpus in this type only measure 3 inches.
In the fore limb of the Pterodactyle the metacarpus has the same relation to the bones of the fore-arm that the metatarsus has to the corresponding bones of the leg in a bird.
The chief point of variation from the Pterodactyle wing is in the relative length of the metacarpus in Dimorphodon.
One of the bones of either the metacarpusor metatarsus.
One of the digital bones of the hand or foot, beyond the metacarpus or metatarsus; an internode.
The underneath surface of the superior suspensory ligament was much thickened, and firmly adherent to the bone; at the posterior surface of the metacarpus there was a quantity of gelatinous substance.
In this case the foot is held up, the animal's metacarpus resting on the operator's knee, and the toe of the hoof pushed downwards with some degree of force.
The anterior ligament of the wrist being now divided, the carpus and metacarpus are to be separated by cutting-pliers, and the carpus extracted by strong sequestrum forceps.
The metacarpus is reduced to a single piece, which in the horse constitutes what is known as the canon.
Also named in veterinary anatomy the anterior extensor of the phalanges, this muscle is situated external to and behind the anterior extensor of the metacarpus already described.
This inferior row carries the metacarpus with it; for the carpo-metacarpal articulation is much less mobile than either of the other two.
In the horse, for example, whose metacarpus is long, and in which but one digit is apparent, the humerus is very short.
The smaller of these tendinous slips, which is the more external, unites at the level of the superior part of the metacarpus with the tendon of the muscle which we are about to study in the following paragraph (Fig.
To the metacarpus succeed three digits, of which the central is the longest, and is formed of two phalanges; the other two are formed each by a small, stylet-shaped bone.
In them not only is the metacarpus turned back, but also the two first phalanges.
The external rudimentary metatarsal is better developed than the internal; in the metacarpus the reverse is the case.
This proportion is of importance because it has certain human characteristics; as a matter of fact, in the anthropoid apes the metacarpus is much longer than the fingers and the palm has a far lower index than that of man.
In the case of two successive long bones (for example, the humerus and radius, the femur and tibia, the metacarpus and phalanges, etc.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "metacarpus" in a variety of sentences. We hope that you will now be able to make sentences using this word.
