A manual of anatomy . inous at birth. According to J. N. Pryor the centers appearearlier than formerly supposed. They appear earlier in the femalethan in the male. Each has one center of ossification that appearsas follows: tJiUALLY GIVEN PkyuR Capitatum appears about 12th mo. (i). 3d to loth mo. Os iiamatum 14th mo. (2). 5th to the i2mo. Os triquetrum 3d year (3). 2nd to 3d year Os lunatum 5th to 6th year (4). 3d to 4th year Greater multangular 6th year (7). 4th to 6th year Navicular 6th year (5). 4th to sth year Lesser multangular 6th to 7th year (6). 4th to 6th year Os pisiforme nth to 12th
A manual of anatomy . inous at birth. According to J. N. Pryor the centers appearearlier than formerly supposed. They appear earlier in the femalethan in the male. Each has one center of ossification that appearsas follows: tJiUALLY GIVEN PkyuR Capitatum appears about 12th mo. (i). 3d to loth mo. Os iiamatum 14th mo. (2). 5th to the i2mo. Os triquetrum 3d year (3). 2nd to 3d year Os lunatum 5th to 6th year (4). 3d to 4th year Greater multangular 6th year (7). 4th to 6th year Navicular 6th year (5). 4th to sth year Lesser multangular 6th to 7th year (6). 4th to 6th year Os pisiforme nth to 12th year (8). 9th to 13th year Ossification is completed about the 15th year. Muscles Attached.— Navicular.—M. Abductor pollicis brevis (origin). Os Pisiforme.—Abductor quinti digiti (origin), flexor carpi ulnaris (insertion).Great Multangular.—Abductor pollicis brevis, opponens pollicis, flexor pollicisbrevis (deep head)(all origins).Lesser Multangular.—Deep head of flexor pollicis brevis (origin) 86 OSTEOLOGY. ,-/ s 1) 111 ti) aj +3 / ?^ ^ c t; !:, /1 / ^ wi n, rt T3 oT3 tj w (3 a. r entaca:dornhaperf ^ OJ (U ^ o -- -d -i^-a o C S rt m 60.—Thecarpal a seen froiadefrombones coi ;£ -S .- S ^ THE PHALANGES 87 Os Capilatum.—Deep head of flexor poUicis brevis, adductor pollicis (origins).Os Hamaium.—Opponens quinti digiti, flexor quinti digiti brevis (origins),flexor carpi ulnaris (insertion). THE METACARPAL BONES (OSSA METACARPALIA) The metacarpal bones are five in number and articulate with thedistal carpal bones and each other, proximally, and with the firstrow of phalanges, distally. The first, or thumb metacarpal, is themost mobile. Each consists of a base, shaft and head. The base is the carpal extremity, each is wedge-shaped and thearticular surface varies with the joint that it forms. The first{thumb) is the shortest and strongest. The second (index finger)is the longest. The shaft of each is smooth and narrow in the dorsal surface is triangular an
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecthumananatomy, bookyea
