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nerve, but the flexor profundus digitorum has an extra twig from the ulnar. The extensor muscles at the back of the forearm are also divided into superficial and deep sets (see fig. 8). The former rise from the region of the See also:

EXTERNAL

external condyle of the humerus, and consist of the extensor See also:

carpi radialis longior and brevior inserted into the See also:

INDEX

index and medius metacarpal bones, the extensor communis digitorum to the See also:

MIDDLE

middle and distal From A. M. Paterson, Cunningham's See also:

TEXT (Lat. textum, woven fabric, from texere, to weave)

Text Book of Anatomy. the extensor indicis joins the extensor communis slip to the, index See also:

FINGER

finger; all these posterior muscles are supplied by the posterior interosseous nerve. In front and behind the See also:

WRIST

wrist the tendons are See also:

BOUND, or BOUNDARY (from O. Fr. bonde, Med. Lat. bodena or butina, a frontier line)

bound down by the anterior and posterior See also:

ANNULAR, ANNULATE

annular ligaments, while on the flexor See also:

SURFACE

surface of each finger is a strong fibrous sheath or theca for the flexor tendons.

The See also:

ball of the thumb is occupied by See also:

SHORT, FRANCIS JOB (1857– )

short muscles called the thenar See also:

GROUP

group, while hypothenar muscles are found in the ball of the little finger. The four lumbrical muscles (fig. 9, d) run from the flexor profundus digitorum tendons to those of the big toe, and the peroneus tertius, a purely human muscle inserted into the See also:

BASE

base of the fifth metatarsal See also:

bone. All these are supplied by the anterior tibial nerve. The external group comprises the peroneus longus and brevis, rising from the See also:

OUTER

outer surface of the fibula and inserted into the See also:

TARSUS (mod. Tersous)

tarsus (fig. I I), the longus tendon passing across the See also:

SOLE (Solea)

sole to the base of the first metatarsal bone, the brevis to the base of the fifth metatarsal. These are supplied by the musculo-cutaneous nerve. extensor communis between the heads of the metacarpal bones, while. rising from the shafts of these bones, are the three palmar and four dorsal interosseous muscles (fig. 9, e) which also are inserted into the extensor tendons. The two outer lumbricals and the thenar muscles are supplied by the median nerve; all the other See also:

hand muscles by the ulnar.

End of Article: EXTENSOR LONGUS POLLICIS EXTENSOR

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